LINKS
Source from: http://www.district87.org/staff/waltonm/CircuitAnalysis/Electronic%20circuit%20schematics.htm
- Intermittent
alarm generator
- Burglar
alarm
- Moisture
alarm
- Automatic
Entry Control System
- Fridge
door alarm
- Electronic
door codelock (PIC16F84)
- Ultrasonic remote
control & alarm system
- Wire loop
alarm
- Proximity
alarm
- Electronic
lock
- Digital
entry lock
- Proximity
switch
- Toxic
Gas Detector
- Door
knob alarm (PDF)
- Water
seepage alarm (PDF)
- Micro-power
over temperature alarm (PDF)
- Personal
silent alarm system
- Active
IR motion detector
- A
Basic RF Transmitter for PIR Sensors
- PIR
motion detector
- Simple
alarm system
- Home security project
- 5
Zone alarm circuit
- Miniature
loop alarm
- Novel
Buzzer
- Gate
alarm circuit
- Modular
Burglar Alarm
- Motorcycle
alarm
- Enhanced
5 Digit Alarm Keypad
- Enhanced
4 Digit Alarm Keypad
- RF
Alarm
- Single
Zone Alarm
- Water
Activated Alarm
- Water
level alarm
- Perimeter
monitor
- Digital
combination lock
- Alarm
control keypad
- Almost
Ultrasonic Motion Sensor
- Alarm
loop sensor (LM3915)
- Touch
triggered alarm
- Universal
alarm system
- Warning
strobe flasher for alarm systems
- Collection
of alarm circuits
- PIR
motion detector light controller
- Micropower
wireless motion detector transmitter
- Touch
activated alarm system
- Combination Lock
(Simple Version)
- Combination Lock
(PIC16F84)
- Low power RFID
transponder
- 100W
Amplifier
- 18W Audio
amplifier
- 25W
MOSFET amplifier
- Headphone
amplifier
- Portable
headphone amplifier
- 2W
amplifier
- 4W
amplifier
- 8 watt audio
amp
- 20W
Amplifier
- 50W
Amplifier
- Amplified
ear
- Two
transistor audio amplifier
- Personal
stereo audio amp
- Headphone
amplifier
- 1.5W Audio
amplifier
- Low-level
audio amp
- 10W
amplifier
- 80W
amplifier
- LM383 12V
Amplifier
- 100W
Audio amplifier
- 100W
RMS Amplifier
- 2-Channel
Power Amplifier
- Push-Pull
Class A Amp using type 5687 dual triodes
- Push-Pull
Class A 2A3 Stereo Amp
- Single
Ended Class A2 SV811-10 Stereo Amp
- JLH
Headphone Amplifiers
- Audio
amplifier output relay delay
- Spatial
Distortion Reduction Headphone Amp
- HeadBanger
Headphone Amp
- 2W
Amplifier
- TDA2030
8 Watt amplifier
- Headphone distribution
amp
- Headphone monitor amp
- Bi-Directional
2.4 GHz One Watt Amplifier
- Bi-Directional
900Mhz One Watt Amplifier
- 20 Watt
GaAaFET Power on 2.3 GHz
- 1
Watt 2.3 GHz RF Amplifier Using a MRF2001
- 2.3
GHz Power Amplifiers
- 2304
and 3456 MHz Power Amplifiers
- 16 Watt
amplifier
- 8 Watt
amplifier
- Power amp
schematic (PDF)
- 20 Watt Class-A
Power Amplifier
- El-Cheapo - A
Really Simple Power Amplifier
- Single Chip 50
Watt / 8 Ohm Power Amplifier
- Hi-Fi Headphone
Amplifier
- 100W Guitar
Amplifier
- Death of Zen (DoZ)
- A New Class-A Power Amp
- Soft-Start Circuit
For Power Amps
- Thermo-Fan To Keep
Your Amp Cool
- Audio Amp Output
Power Limiter
- 55W (Originally
75W) Power Amplifier
- 300W Subwoofer
Power Amplifier
- 20 Watt / Channel
Stereo Power Amplifier
- mu-stage
microphone preamp
- Solid
state microphone preamp
- Dynamic
microphone preamplifier
- Sound
blaster preamplifier
- Phono
preamp
- Low
impedance microphone amplifier
- Masthead
preamp
- Preamplifier
for microphone or guitar use
- Microphone
amplifier
- RIAA phono
amplifier
- Simple
microphone preamplifier
- Tube
microphone preamp
- Simple
Stereo Electret Microphone Preamplifier
- Simple
Stereo Electret Microphone Preamplifier
- Phono
Preamp
- Simple
microphone preamplifier
- ECM
Mic preamp
- Hi
Fi preamp
- Balanced
microphone preamp
- Audio
preamp
- Electret
mic amplifier
- Audio
preamplifier
- Vacuum
Tube Microphone Preamp
- FET Preamp
Cable
- Audio
preamp
- Low
impedance microphone amplifier
- Hi-Fi
Preamplifier
- Crown
IC-150A Preamplifier (PDF)
- Race cart
or car datalogger
- Analog
Tachometer for Gasoline Engines
- Headlight
On reminder with Light
- Flashing
High Intensity LED 3rd Brake Light
- Adaptive
Windscreen Wiper Control
- Car
clock
- Car
message display
- Car
interval wiper
- Safety
indicator light
- Speed
limit alert
- Car power supply
for MP3 player
- Car
power supply for MP3 player Mk 2.5
- Grand
Cherokee Off-Highway Lights
- Engine control unit
schematics
- Portable
CD Player Adapter For Car
- Car
battery charger
- Wireless Auto
Tachometer
- Electronic
auto stethoscope
- Turn signal
alarm
- Motorcycle
turn-signal system
- Cigarette
lighter 9V adaptor
- Alternator
Signal Detector
- Automotive
alarm system
- Road
ice alarm
- Automotive
Anti-Lock Brake Control Driver
- PC
based EFI programmer
- Headlight
reminder
- Breath
Alcohol Tester controlling a car ignition system
- Simple
car battery charger
- Parking
sonar
- Fuel injector pulse
width monitor
- BMW R
Series Motorcycle Regulator Schematic
- 80188XL
Engine Tachometer
- Integrate
Fuel Pump Wire Security Cut Off with a Turbo Timer
- Car
burglar alarm
- Auto
to trailer lights interface
- Car
locator (RF based receiver / transmitter)
- Simple Car
Preamplifier and Artificial Earth
- FCD
(Fuel Cut Defencer)
- Interface
between GM's 5 Volt 8192 baud ALDL data stream and a PC serial port
- 5301
wideband fuel mixture display
- Wide
Band Fuel Mixture Display
- 3rd brake
light
- 12V to 9V
car coverter
- Car
Nicad charger
- Economy radar
detector
- Combination lock
for car liftgate
- BMW
motorcycle side stand protection mod
- Datalogger
based on 68HC11
- Digital
Water Wave/Tide/Level Meter (PIC16F876)
- Self
made data-logger V2.5 (second edition)
- Magnetometer
- Analog
input section based on AD9220
- uModem 4+4/8 channel
A/D board
- ADXL202
accelerometer to CV output
- Light
direction sensor
- 12-Bit
ADC interface
- Digital
thermometer
- Universal flight
controllers / datalogger
- Rain
detector
- Home Brew
Compass Sensor
- Using
555 Timer as an A/D converter
- Air flow
detector
- Air flow
detector
- Strain gauge
sensor
- ADC0804LCN
8-bit A/D converter
- Web-based
thermometer project
- ADC-x
RS232 Interface Schematic (PDF)
- Low
Flow-Rate Thermal Flowmeter
- Geiger
counter
- Differential
Capacitance Measurement for Tilt Meter
- Honey
Bee counter (PDF)
- Capacitance
type liquid level measurement (PDF)
- Thermostat
node schematic
- Digital
PC Oscilloscope
- Ultrasonic
Range & Imager
- Network
of RS485 temperature sensors
- Digital
compass schematic
- Temperature
datalogger
- Accelerometer
Schematic
- Serial
Port A/D-converter
- Centronics
port D/A converters and low-pass filter
- LCD
Thermometer
- Wireless
Liquid Level Sensing for Restaurant Applications
- Pressure
Sensor-Based Altimeter Circuit
- Ultrasonic
range finder circuit
- 8-bit
analog to digital converter (ADC)
- Clockless
analog to digital converter
- Low-resolution
BCD analog to digital converter
- AD
converter with tracking / sample-hold
- Analog
to digital converter with switching preamplifier
- Simple
flash A/D converter
- Low-cost
A/D converter
- Logarithmic
A/D encoder
- 1-wire
barometer
- Water-level
sensor
- Addressable ADC
- Wireless
weater station
- Voltage
Controlled State Variable Filter
- Galaxy
Noise Filter
- RC
Notch filter
- Low-pass
active filter
- Filter
Circuit for the Earthworm Seismic Data Acquisition System
- Active
2nd Order Filters
- RC
Notch Filter (Twin T)
- Multiple
Feedback Bandpass Filter
- CW
filters
- Self-tune
filter
- SSB
AF filter
- Helical
Resonator Notch Filter
- 3KHz
low-pass filter plus audio amp (PDF)
- Active
bandpass filters
- Bandpass
filters
- Butterworth
filters
- Narrow
band audio bandpass filter
- Single-Supply
Sallen Key Notch Filter
- Single-Supply
Twin T Butterworth Low Pass Filter
- Inversal
notch and bandpass filter
- DC Accurate,
Active RC Lowpass Filter
- Chebyshev
Bandpass Filter
- Bandpass filters
- Chebyshev /
Butterworth filters
- Biquad
Active Bandpass Filter Schematic
- Voltage
controlled filter and oscillator
- "A"
Weighting Filter For Audio Measurements
- Multiple Feedback
Bandpass Filter
- Digital signal processor (DSP)
for radio communications
- 29.85 MHZ
bandpass filter schematic
- 29.85 MHZ notch
filter schematic
- LC
filter design
- Visor cradle
serial interface
- Video ping
pong game
- Big Mouth
- MBC5/CPLD
for the GameBoy
- GameBoy
Camera Parallel Port Interface
- Wireless
quiz show system
- Mobile
robot (PDF)
- PSX
controler to PC MIDI converter
- Dreamcast PC serial
adapter
- GameBoy
Cart Programmer
- Memory
game
- 32 Kb x
8 emulator for the GameBoy
- Project:
NES to Atari 2600 controller interface
- Battery
Meter for Pinball Machines
- SRX1 (Stephane's
Robotic eXperiment 1)
- Pine Racecar
Victory Judge
- Interfacing Sony
control stick to Empeg
- Electronic
coin tosser
- Electronic
craps game
- First
response monitor
- Electronic Nicad
glow plug driver
- PowerGlove
Interface
- April
Fools LEDs
- Pinewood
Derby logic
- Quiz
Master
- GameBoy
Schematic
- GameBoy LCD
schematic
- GameBoy Power
& Cartridge schematic
- GameBoy
ROM+RAM+MBC1 Cart Schematic
- GameBoy MBC1
circuit equivalent
- Super GameBoy
schematic
- Quiz
show indicator
- Dreamcast interface
- Bingo!!!
(on your tv)
- Slot
car TV cronograph
- Furby
reverse-engineered circuit
- Sanyo 20EZ monitor
Arcade Game (300k ZIP)
- Burger Time
Arcade Game (500k ZIP)
- Dig Dug Arcade Game
(800k ZIP)
- Frogger Arcade
Game (500k ZIP)
- Galaga Arcade Game
(542k ZIP)
- Gyrus Arcade Game
(800k ZIP)
- Junior Pacman Arcade
Game (400k)
- Ladybug Arcade
Game (335k ZIP)
- Mappy Arcade Game
(470k ZIP)
- Moon Cresta Arcade Game
(300k ZIP)
- Mr.Do Arcade Game
(554k ZIP)
- PacLand Arcade
Game (316k ZIP)
- Pengo Arcade Game
(313k ZIP)
- Q*Bert Arcade Game
(600k ZIP)
- Qix Arcade Game
(476k ZIP)
- Scramble Arcade
Game (600k ZIP)
- Time Pilot'84 Arcade
Game (870k ZIP)
- Xevious Arcade
Game (450k ZIP)
- Magic
Wand Conjuring Trick
- Quiz
game circuit
- E.S.P.
Conjuring Trick
- Applause
meter
- Fart
strength meter
- Model
train throttle control
- DIT shutterglasses
controller
- Furby
circuit
- Archery
timer
- PIC
micro Tetris game
- Magic lamp,
IR remote control jammer and other fun circuits (PDF)
- Lego Mindstorms
Double Rotation Sensor
- IR
detector
- USB
to infrared adapter
- Infrared
remote control shutter release system
- Infrared transmitter
for locomotives
- IR remote
control system for PC
- IR
Receiver (Amplitude Modulated IR)
- IR
Transmitter for Audio (Amplitude Modulated IR)
- Infrared
gate for door
- Infrared
circuits for remote control
- Serial
port controller infrared transmitter (PIC16F628)
- Digibox
interface
- IR remote
control
- IR
remote control jammer
- Long
Range Infrared Remote
- LCD + IR
circuit schematic
- Infrared
body heat detector
- Stereo IR
audio receiver
- General
purpose IR receiver
- Wireless IR
headphone transmitter
- Wireless IR
headphone receiver
- iRDA to
TTL interface
- 40KHz
light receiver (PDF)
- 40KHz
TV-VCR repeater (PDF)
- Micro
based PIR to IR remote converter
- IR-related
ASCII Schematics V1.00
- Infrared
remote transponder
- Build
an Infrared night scope
- Decoding
IR Remote Controls
- IR
detector
- PC
IR Remote Control Hardware
- PC
IR Remote Control
- An
Ambient-Light-Ignoring Infrared Active Motion Detector
- Infrared
Transmitter and Receiver schematic diagrams
- Pyroelectric
Infrared Sensor
- Minimal
Infrared transmitter for PC
- Simple
IR transmitter circuit
- Simple
infra-red detector
- Infra
Red Switch
- IR
remote control extender
- IR
Remote Control Extender Circuit (Mark 2)
- IR
Remote Control Extender Circuit (Mark 3)
- IR
Link
- IR
remote control tester
- Infrared
repeater
- 40khz
IR Tester
- 555
timer 40khz IR Oscillator
- IR
detector / emitter
- Fire-Stick
infrared remote control
- Simple
infrared remote control
- Infrared
/ Ultrasonic beacon
- Infrared
transmitter / decoder
- Infrared
logic probe
- Implementing
Infrared Object Detection
- Infrared
gate detector
- Infrared
relay with relay output
- IR
detector for robotics
- Computerized
Infrared Remote
- Laser
power supply
- Laser
transmitter/receiver
- Laser
harp
- Simple
laser communicator
- LASER
listening device
- LASER
transmitter / receiver
- RS-232
Laser Transciever
- HeNe laser
power supply schematics
- Light beam
receiver for laser pistols
- 12V supply
for He-Ne laser
- Laser diode
transmitter
- Laser
Telephone Receiver Circuit
- Fiber
Optic Voice Communications
- Efficient
Laser Supply
- 20MHz
VCSEL 3mW laser test circuit (PDF)
- 10MHz
to 20MHz laser light detector (PDF)
- Micro-power
40KHz burst laser diode driver (PDF)
- 40KHz
laser burst detector (PDF)
- Modulated
laser diode tester (PDF)
- Ar/Kr Ion
Laser Power Supply
- Laser
diode power supply circuits
- HeNe
laser power supply
- OPT201 Laser
receiver
- OPT301
Laser receiver
- Laser
transmitter schematics
- Diode
Laser Power Supplies
- Laser
bug circuit
- RS-232
Laser Transceiver
- Experimental
laser data link
- Diode
Laser Power Supplies
- Ar/Kr Ion
Laser Power Supply Design
- Laser
light show
- Laser
light show pattern generator
- Simple
laser communicator
- Variety
of LED circuits
- Winking
LEDs
- LED
flashing light
- LED
initials
- LM3909
replacement using discrete components
- Color fade
- LEDs
shimmer randomly as though on fire
- LED
power supplies for AA cells
- 1.5
Volt LED Flashers
- AC
Line Powered LEDs
- Astable
Multivibrator
- 9
Second Digital Readout Timer
- 9
Second LED Relay Timer
- 16
Stage Bi-Directional LED Sequencer, other sequencer and flaser circuits
- 10
Stage LED Sequencer
- 28
LED Clock Timer
- Fading
Red Eyes
- Two
Transistor LED Flasher
- 16
Stage Bi-Directional LED Sequencer
- Expandable
16 Stage LED Sequencer
- LED
Photo Sensor Circuit
- LED chaser
- 7 Segment
LED Counter
- 7
by 10 LED Moving Sign ( 27C512 EPROM)
- LED Flasher
- LED pulser
with audible output
- IR
Illuminator
- Flashing
Christmas LED display
- ICL7660 LED
flasher
- Sequencial
LED Flasher with Reversable Direction
- Tri
Color LED Controller with Serial Interface
- 1.5V
LED flasher B (PDF)
- Low
current LED flasher (PDF)
- 1.5V
LED flasher A (PDF)
- Flashing
LED advertising badge (PDF)
- Flashing
LED advertising badge (PDF)
- Pulsed
LED test circuit (PDF)
- Low
battery voltage flasher (PDF)
- Adjustable
flashing LED
- PWM
white LED drivers
- Heart of LEDs
- Christmas Star
- Christmas tree
- LED
Counter
- PIC16F84
LED chaser
- PIC16F84
LED signboard
- PIC16F84
LED signboard 2
- LED
Stroboscope - Maintains constant brightness at all flash rates
- White LED circuits
- Assorted
LED circuits
- LED
Mood Light
- LED Audio VU Meter
- Scrolling
LED sign
- LM3909
LED flasher
- Animated
LED signboard (PIC16C84)
- Picxie 2 - 8x8
Animated LED Signboard
- Garden
light switch
- DMX
lighting and special effects
- Microcontroller
Multichannel Light Dimmer
- Digital
timer light switch
- Flashing
flashlight
- Flashing
road baricade for construction workers
- Hand
clap lamp control
- 600W
120VAC lamp dimmer
- Radio
controlled light switch
- Disco
style Strobe Light
- Varying
Brightness AC Lamp
- 12
Volt Lamp Dimmer
- 120VAC
Lamp Chaser Using Solid State Relays
- Flashing
Neons (NE-51 / NE-2)
- Sequencing
Neons (NE-51 / NE-2)
- Touch
Activated Lamp
- 220V
Flashing lights
- Coutesy
lamp
- Bedside
lamp timer
- TRIAC light
dimmer
- 12VDC
Fluorescent Lamp Driver
- Strobe
light
- Adjustable
Strobe Light
- RHINO8 EL
Sequencer
- Smart 12V
light dimmer (PDF)
- Light Sequenced
Candelabra
- Light
timer
- 5W
Fluorescent light intensity modulator (PDF)
- 1W
Fluorescent lamp night light (PDF)
- Low-voltage
light dimmer
- Light
chaser
- 4-channel
dimmer rack
- PIC16F873
light controller
- Disco
light controller
- Neon
desklamp
- Electronic
night light
- Neon lamp
dimmer
- 10-channel
follower for Austin Hotel
- 12V
Color organ and reverb unit
- 8-bit
digital firing circuit
- Audio
trigger circuit for light chasers
- Christmas
star
- Electronic
candle
- Electronic
candle V2
- Fluorescent
light dimmer
- Strobe
light
- LED
Mood Light
- LX-800 Lighting
system
- Xenon Strobe Light
- Lamp
flasher/dimmer
- Efficient dc
lamp dimmer - 74C14
- Instrument
panel lamp dimmer control
- Snore
alarm electronic device
- EKG/EEG circuit
- Radiation
Dosage-Rate Meter
- Heartbeat
monitor
- Cranial
Electrotherapy Stimulator
- Automated
crib lights
- Jogging
timer
- Tan
timer
- Muscular
Bio-stimulator
- Pedometer
- Heart
rate monitor
- ECG
amplifier
- Simple lie
detector
- Simple
lie detector
- Heartbeat
transducer
- ECG
Amplifier
- EEG
preamp, anti alias filter and isolation circuit
- Self
Contained Electromyograph (EMG)
- Cardiac
monitor
- Galvanic Skin
Response (GSR) Schematic
- Brain-Wave
Machine
- Lie
detector
- Simple
lie detector
- ECG
project page
- PC-based
biofeedback monitor
- Pain
field generator
- The ESP SIM (Sound
Impairment Monitor)
- Respiration
system
- PIC
based packet radio encoder (PDF)
- RS485-Version
of the SAB80C535-Microcontrollerboard
- PC
IR receiver based on PIC16F84
- Record
and play fast 1-bit sound on a PIC micro
- AT89C2051/4051scanning
7-segment display and keypad
- AT89C2051/4051
Driving dot LED
- AT89C2051/4051stepper
motor interface
- AT89C2051/4051connecting
dumb terminal
- Simple
RS232C Level Converter using Transistors
- C-52
EVB Robot Controller
- Mains
clock controller using AT89C2051
- AT89C2051/4051
Easy-Downloader
- AT89C51/52/55
Easy-Downloader
- PIC16F84
programmer
- PIC16F84
miniature real-time controller
- Isolated
RS232 for PIC16F84
- PIC16F84
debugging terminal
- MiniLOGGER
V1.0
- Atmel
89C Series Flash Microcontroller Programmer
- AT89C2051
real-time controller
- PIC12C508
Night-light saver
- AT89C2051
Night light saver
- Atmel
8051 Flash Based-Microcontroller Programmer
- AT89C2051
Digital thermometer and clock
- PIC16F84
CW decoder (PDF)
- 12C508
Smart Lock
- Build
a PIC controlled DDS VFO, 0 to 6 MHz
- PIC
controlled DDS VFO, 0 to 6 MHz
- Basic
Stamp Lightning Activity Monitor
- TCP/IP
stack and WWW server in a PIC16F84
- PIC16F84 line
following robot
- WWWpic2 - A
web server in a PIC
- PIC16F84 web
server
- 50
MHz frequency counter, voltage meter & SWR/PWR indicator
- Programmer
PIC16F84,12C50x and EEPROM 24Cxx
- RDS Encoder -
digital part
- PIC programmer
for serial port
- PIC
18 programmer (PIC18F458, PIC18F452, PIC18C252, PIC16C745, PIC18F6620, PIC18F6720)
- Freign
vocabulary recollector
- Embedded
system to send e-mails (small TCP/IP stack)
- Speaking
clock using PIC & ISD device
- Speaking
doorbell using PIC & ISD device
- Whistle
detector using 8-pin PIC
- PIXpand
- PIC16F877 to IDE
interface
- 68HC11
stepper motor control
- POCSAG
encoder/decoder
- Network
Time Protocol AVR Clock
- DS1820
Temperature Sensor Readout Unit
- PIC16C505
IR / wireless remote control
- RS485-like
multi-drop bus with half duplex serial protocol
- Rotating
Sprocket Wheel Generator (PIC16F84)
- Talking
PIC - based on SP0256
- Serial to parallel
converter using the AT89C2051
- AT89C2051 serial
COMs to LED driver
- PIC16F877
Programmer And Development System
- DS1820
Arbiter V2.00 Schematic
- PIC18
Schematic
- Atmel AVR
programmer
- Microchip
PIC ICSP implementation
- 101 AT
Keyboard to ASCII Decoder using 68HC705J1A MCU
- DTMF
tone decoder using Basic Stamp
- LCD
Serial Terminal
- Propellor
clock (PIC16F84)
- World's
smallest PIC programmer
- PIC X1
schematic (PIC16F877)
- Optical
sensor using PIC12C508
- Interfacing
S-7800A to PIC16F877
- A Scenix
(and PIC) Programmer
- MMC
to PIC16F876 circuit diagram
- 8088
maximum mode SBC
- EZ80
single board computer schematic (Z80)
- Voice
recording and message retrieval system
- Long-period
watchdog timer
- PIC16F84
Range Finder Project
- Generate
video signals in real-time using a PIC16F84
- PIC
ICD
- PIC Project #1 - RS232
to I2C Interface
- Galvanic
decoupling of I2C bus
- Programmer
PIC16F84,12C50x and EEPROM 24Cxx
- Dual PIC16C84
prototype board
- Graphic
LCD interface
- FSK
modem with PIC16C84
- Talking
YODA project (PIC16C84)
- PIC16F84/PIC16F87x-In-System-Programmer
- Microcontroller
interface for 5KW microwave oven
- Using
an I2C Serial EEPROM with a Basic Stamp 2
- PIC16F84
Based Morse Code Reader
- AVR-Based Serial Port
IR Receiver
- Interfacing piezo
elements to a microcontroller
- Victoria TAFE
programmer (based on AT89C2051)
- JDM programmer
- PIC micro programmer
- Speech
recognition using HM2007
- PIC
microcontroller servo motor interface
- PIC
micro multiple servo motor interface
- PIC16F84
countdown timer
- PIC16F873
ultrasonic range meter
- PIC16F873
Digital clock
- PIC16F873
remote display
- PIC16F84
stepper motor controller
- Way
small web server
- PICADC
- a free, PIC based "intelligent" A/D converter
- PIC-Programmer 2
- Connecting
PIC12C508 8 to 93AA46 serial eprom
- KD7LMO Micro
Beacon (PIC18F252)
- GPS LCD Display Project
- PIC16F84 LED
chaser
- PIC micro
LED projects
- AT89C2051
line-follower robot
- Night
light saver (PIC12C508)
- Basic stamp
interface circuits
- PIC16F84 sound
controlled Christmas lights
- Microcontroller
sensor and actuator interfaces
- Giant money
counter (PIC16F876)
- PIC12C509
logic gate replacement for nitrogen filler
- PIC
demo board
- PIC12C509
Gym Timer
- PIC
LCD and Keypad driver
- PIC12C508
Phase Controller for 2kW heater
- PIC16F84
TRIAC / IGBT brightness phase controller
- PIC16F84
pulse monitor with date/time output (ZIP)
- Programmer
for the 68HC705C8 MicroController
- 27c801
EPROM Programmer Project
- LCD to
PIC16C54 schematic
- 68HC11 based RDS
decoder
- Acceleration monitor
using ADXL202 and AVR
- 40+
MHz 5-digit frequency counter with an AVR 2313
- Interfacing
DRAM to AT90S8515
- Temperature
monitor/controller: AVR 2313 / DS1621
- PIC16C84
VT-52 Emulator for Linux
- Microchip
PIC ICD (in-circuit debugger)
- Tony
Nixons Pocket Programmer (PIC)
- PicoWeb
V5.1 (AT90S8515) tiny web server
- 8051
Development System Circuit Board
- 8051
Development System Circuit Board
- Temperature
controlled based on AT89CX051
- AFSK 1200 Modem
based on PIC16C620
- PicCon - Hidden Radio
Transmitter Controller
- PIC16F84
tone generator with source code
- PIC16F84
tone generator
- PIC16F84
tone generator (6-Bit)
- AVR
Beacon Super Keyer
- AVR
Frequency Counter
- AVR
Digital Voltmeter
- AVR
Signal Generator
- Ser-Key 10-Key
Serial Keypad Encoder
- 2-wire LCD interface
using PIC16CF84
- PIC16F84 Serial
I/O-expander with PicBasic
- RS
485-RPT Schematic
- AC
lamp dimmer for Basic Stamp
- Microcontroller
multi channel light dimmer
- PIC16C63
MIDI controlled light dimmer
- No
parts PIC micro programmer
- Connecting
LED to PIC Micro I/O pins (PDF)
- Microprocessor
RS-232 Reset
- AT90S8515
experimenter board
- A
PIC-Based Keyboard Emulator
- PIC-based
robot
- ScanMate
audio activated recorded
- PIC18F252
bootloader schematics
- Remote
control encoder/decoder with PIC16C620 & PIC12C508
- Electronic
door codelock with PIC16F84
- Automatic
door opener with PIC12C508
- Infra/radio
remote control transmitter/receiver with PIC
- Codelock
- Automatic
door opener (PIC)
- PIC16F876
Datalogger
- GPS Repeater
- Kodak DC-20
camera interface (PIC12C509)
- Kodak DC-20
camera interface (PIC16F84)
- Remote control
for Raymarine ST4000 Autopilot
- PIC
programmers for parallel port
- Wisp628 ISP Microchip PIC
Programmer
- Nixie
clock (PIC16F876)
- Zilog Z80
thermostat embedded web server
- Picxie 2
- 8x8 Animated LED Signboard (PIC16F84) Picxie 2 - 8x8 Animated LED Signboard
- 10
tricks for interfacing to the PIC16C508
- Interfacing
the PIC16C508
- PIC
5x7 display
- Analog
to digital conversion notes
- Multi-chip
programmer
- Pink
noise generator
- A
Schottky-based Saw-to-Tri converter
- Saw
to triangle converter
- Improved
saw to triangle converter
- Voltage
controllable LFO
- White
noise generator
- Low
Frequency Sinewave Generators
- Horror
movies sound effects
- Sound
amplifier
- Temperature
sensitive oscillator
- Twin-T
Audio Sine Wave Oscillator
- 1.5V
Audio Amplifier
- Low
Power Op-Amp - Audio Amp (Intercom)
- 555
Tone Generator (8 Ohm Speaker)
- 3
Transistor Audio Amp (50 milliwatt)
- Low
Frequency Sinewave Generator
- Automatic
Charger for Battery Operated Hi-Fi Preamps
- Audio
level indicator
- Room
noise detector
- Amplifier
timer
- Bell
ring generator
- Amplified
ear
- Precision
audio millivoltmeter
- Six-channel
Mixer and Amplifier
- Audio
Signal Source
- Analog VU meter
- Voltage controlled
amplifier
- Audio graphic equaliser
- Intercom preamp
- FET audio
mixer
- Microphone
mixer
- Tone control
- Digital
volume control
- Sound
level meter
- CMOS IC
audio oscillator
- Ultrasound
detector
- Electronic
siren
- Two-tone
siren
- Underwater
microphone
- Code
practice oscillator
- Noise
generator
- Electronic
whistle
- Three band
Active Tone Control
- Automatic
gain control (AGC) circuits
- Audio
frequency meter
- Bull
Horn
- Sound
Mixer/Amplifier
- Very
loud beeper (PDF)
- Digital
noise generator (PDF)
- Tone
display system
- Tube
amplifier
- Condenser
microphone hookup
- Phase
shifter
- Paradoxical
Sound Syntheizer
- Various tube
crossover circuits
- Bias
circuits
- Audio
line isolator
- Dynamic
microphone to electret microphone input
- Line
level signal to microphone input adapter
- Simple
two line output combiner
- Electret
microphone powering circuits
- Use
amplifier phono input as line level input
- Speaker
signals to line level inputs
- Spring
reverb unit
- Sine
wave generator
- Simple
amplifier
- 3-Band
equalizer
- 6-Input
mixer
- Doorphone
intercom
- Stereo
line driver
- Audio
notch filer
- Peak
reading audio level meter
- Tone
control
- Speaker
Microphone Circuit
- Electronic
canary
- Electronic
siren
- Microphone
phantom power supply
- NHT subwoofer
amp
- Voltage Controlled
Mixer w/Modulator
- Dual Voltage Controlled
Oscillator w/Modulator
- Dual Voltage Controlled
Filter w/Modulator
- Stereo Ducker
- MS Stereo Decoder
- MS Stereo Microphone
- RIAA Equalized Stereo Phono
Preamp
- Tube
active crossover
- Improved
PL tone decoder
- Magnetic
cartridge amplifier
- LM358
preamp
- Sound
detector
- Tone
detector
- Tone
generator
- Warbler
- Fender Champ
Replica
- Keyboard
scanned 8-tone generator
- Audio
test station
- Audio
tone VU meter
- Pink
noise generator
- Voltage
Controlled Panner
- Low Noise
Microphone Preamplifier
- Bridging Adapter
For Power Amplifiers
- Simple Surround
Sound Decoder
- Simplest Ever
Amplifier Bridging
- Stereo Width
Controllers
- Power Amplifier
Clipping Indicator
- Phono Preamps For
All
- Digital Delay Unit
For Surround Sound
- Parametric And
Sub-Woofer Equaliser
- High Quality Sound
Mixer
- Loudspeaker
Protection and Muting
- Direct Injection
Box for Recording & PA Systems
- Minimalist
Discrete Hi-Fi Preamp
- Signal Detecting
Auto Power-On Unit
- Load Sensing
Automatic Switch
- Amplifier thermal
protection
- Active Sub-Woofer
and Controller
- Balanced Line
Driver & Receiver
- VU And PPM Audio
Metering
- Variable Amplifier
Impedance
- Linkwitz Cosine
Burst Generator
- Low Noise Balanced
Microphone Preamp
- Fast Audio Peak
Limiter
- Subwoofer
Equaliser
- 110 dB beeper -
74C14
- Audio
output level meter
- Surround
Sound Decoder Mk2
- Stereo
compressor
- Audio
mixer
- Ultrasonic radar
- How
to generate a Rotating Field
- Chaos
generator
- Simple BFO metal
detector
- Voltage
Comparator Information And Circuits
- Electromagnetic
Levitator
- Build Your
Own Digital Setting Circles For Your Astronomical Telescope
- PL
tone generator (NE567)
- Bat
detector
- Bat
detector microphone pre-amplifiers
- DGPS
receiver
- G Strain energy
absorber
- RDS Encoder
- Toggle
Switch Debounced Pushbutton
- RDS Encoder
- Discrete
Set/Reset Flip Flop
- Monostable
Flip Flops (one shot)
- Discrete
Bistable Flip Flop
- Talking
Morse Code Practice Computer
- Plant
watering watcher
- Capacitance
sensor
- Whistle
responder
- Nocturnal
animals whisker
- 12V
DC electronic door chime
- Biasing
Op-Amps into Class A
- Parasite
zapper
- Full-duplex
doorphone with 3 wires connection
- Analog computer
- BayComm
packet modem
- Morse
monitor
- HamComm
modem interface
- Morse
paddle keyer
- UV
light box
- Voice
activated tape recorder switch
- Random
noise generator
- Analog pulse counter
- Analog opto-isolator
- Pulse width modulators
(PWM)
- Pulse width to voltage
converter
- Fantastic
Atom Expander
- Black
Light
- Computerize
Your Room/Home
- Flash slave
trigger
- A
Visual CW Zero Beating Aid
- A
two-way Morse practice set
- Magnetic
levitation device
- Tesla power
receiver
- Lazer
Tag Equipment Modifications
- Garmin GPS data
interconnect
- Inexpensive APRS
Weather Station
- Walking
robot
- Vibrating
Pocket Bug Detector
- Basic
op-amp circuits
- Electronic
fish lure
- Ultrasonic
sound receiver
- Experimental
data transmitter for fiber optics
- Experimental
fiber optic receiver
- Ion detector
- Darkness
monitor
- Electroscope
- Simple event
counter
- Geiger
counter
- Light
detector
- Short-circuit
beeper
- LM 1800 FM
stereo decoder
- Glitch
detector
- MAX924
bar-graph level gauge
- Ultrasonic
generator
- Negative ion
generator
- ELF Monitor
- Power
line FM intercom
- Intercom
circuit
- Lightning
Storm Detector
- Large LCD
Display Buffering Driver
- Text
to speech converter
- Ion
detector
- 1uS
light pulse descriminator plus F to V converter (PDF)
- Broadband
2MHz optical fiber receiver (PDF)
- Modulated
light received (PDF)
- 1uS
light pulse receiver plus post amp (MISC)
- Broadband
5MHz optical fiber receiver (PDF)
- High-speed
light receiver (PDF)
- Basement
doorbell beeper (PDF)
- Time
to dust indicator (PDF)
- Low-power
optical interrupter (PDF)
- Simple
nitrogen spark generator (PDF)
- Ultrasonic
transducer oscillator circuit
- Build
logic gates using discrete parts
- Jacob's
Ladder
- Sudden Ionospheric
Disturbance (SID) Receiver
- A
selection of robotics projects
- Bat
detector (new)
- Vat
detector (old)
- Variety
of quick designs
- Gold
wafer (smartcard) programmer
- Making a FRED
photopopper
- Griffith
Observatory Tesla Coil
- Fogger
smoke machine
- Dinsmore
1490 digital compass
- Geiger
counter
- Electric
field disturbance monitor
- Inexpensive seismometer
project
- Digital
dial
- GPS
receiver interface
- Doorbell
for the Deaf
- Electromagnetic
field detector
- Insect
Repellant
- High
Quality Intercom
- Magnetic
Gun.
- Metal
detector
- Static
Electricity / Negative Ion Detector
- Ultrasonic
dog whistle
- Popular
Electronics Ultrasound Detector
- An Inexpensive X-ray
Machine
- Magnetic
levitation circuit
- PE3342
Programmer Schematic
- Schmidt
Trigger
- u-Blox GPS
receiver board
- Assorted
digital circuits
- Basic
electronic circuits
- Miscellaneous
simple circuits
- Digital Call Sign
Annunciator
- Ultrasonic
switch
- Sound
finding cricket with phase detector
- Sound
finding cricket
- APRS
GPS tracker schematic (PIC16C73)
- No
loss capacitor
- Discrete
logic decimal to BCD converter
- Doorbell
extender
- Earthquake
detector
- Electromagnetic
levitator
- Jacob's
ladder
- Magnetic
ball levitator
- Photodiode
amplifier
- Relative
wind angle indicator
- Solid-stateTesla
coil
- Very
basic circuits
- Bat
detector
- FCTS
Project
- Smooth
Tone Clickless CW Sidetone Generator
- Morse
Code Beacon Keyer
- Lightning
Activated Camera Shutter Trigger
- Three Power
Supplies for the Garmin GPS-20 Sensor Board
- Driving
N-channel FETs from TTL
- Miniature
Self-Powered Autonomous Robot
- Electronic
Dazer
- Morse
Code Practice Keyer 1
- Morse
Code Practice Keyer 2
- 741
Light Sensor
- Fluid
level detector
- The
Aisin-Seiki GPS-Receiver (The "US$20 GPS")
- Voltage
follower with 1G ohm input (LM11)
- Double-ended
flashing voltage monitor - LM10
- Full-duplex
doorphone
- Morse code
display
- Intercom
schematic
- Pulse
Induction Metal Detector
- Scaling
ADXL50 accelerometer output
- Snake
throat muscle controller
- Handy
cricket for robotic applications
- Incline
Railway Control Circuit
- A
Receive Signal Decoder
- One
ounce rocket ejection timer
- LED
traffic lights
- Two-tone
siren
- Proportional
radio remote control
- Alf:
The Robotic Matchbox car
- Seaplane
schematic
- Model Rocket
with Video Camera
- Signal breaking module
- RF serial
link for robot
- PIC based
rocket altimeter
- Robot
with PIC16F84 brain & InfraRed eyes
- 0-10V
control for RC servos
- Robotic
microcontroller board
- Autonomous
airplane
- Multi
Rocket Launcher
- Model
rocket launch controller
- Pad
launch controller for model rockets
- Simple flashing
light circuit
- Simple flashing
light circuit
- A dual alternating
flashing light circuit
- Simple flashing
light circuit
- A dual tandem
flashing light circuit powered by a 9 volt battery
- Simulate the
Gyralite (dual flashing headlights).
- Simple train
detector using ambient light and a photocell
- Simple charge
rate monitor
- Deluxe charge
rate monitor
- "CLONEPAC"
memory module for Futaba 8UAF/8UAP
- Battery pack
discharger
- Plane locator
- Plane locator 2
- Battery low
voltage alarm
- Battery low
voltage alarm 2
- Ultimate battery
low voltage alarm
- R/C digital camera
controller
- R/C helicopter camera
- Building an RF Remote
Control System
- Motor
walker circuit
- Two
tone train horn
- 27Mhz
toy car receiver
- 27Mhz
toy car transmitter
- R/C Emergency
locator alarm
- Remote switch for
radio-control aircraft accessories
- Radio
Control Battery Backup
- Glow Plug
driver for model engines
- 12
relay launcher for model rockets
- Bridge
head
- PWM
motor controller
- Light
activated relay
- Simple
10 Stage Control Box
- Simple PWM
circuit
- H Bridge
Motor Control Circuits
- Motor
speed controllers
- Ceiling
fan speed control
- Delayed
off light switch
- Deoderizer
fan timer
- Electronic
Thermostat Relay Circuit
- Interfacing
5 volt CMOS to 12 volt loads
- Light
Activated Relay
- CMOS
Toggle Flip Flop With Relay(CD4013)
- 555
Timer Monostable Circuit Using Pushbutton
- Dual
Channel Servo Pulse to H-Bridge Interface
- Current loop interface
- Switching solenoid driver
- Modular relay system
- Light/dark
detector
- Pulse
Width Modulation DC Motor Control
- Stepper
motor controller
- Touch switch
- Pump
controller
- H-Bridge
motor controller (5 amps, 100 watts)
- Dual
Channel Servo Pulse to H-Bridge Interface
- Servo
pulse to PWM converter
- 12V Sump
Pump Control
- Transistor
relay driver
- Latching
relay driver
- Relay delay
circuit
- Touch
switch
- Low voltage
DC motor speed controller
- Flashing
neon christmas lights
- Three input
first response monitor
- Switch-on
delay circuit
- Electronic
thermostat
- LM3911
temperature controller
- Programmable
light-activated relay
- Rolling code
4-channel UHF remote control
- DC Motor
Speed Controller
- 3 Phase
Brushless DC Motor Xtal Based Controller
- DC
motor controller
- Garden
moisture controller
- Overload
Voltage Protection with Automatic Reset
- Pulse Width
Modulator
- Pulse
Width Modulator Motor Speed Control
- Pushbutton
one-shot and latch (PDF)
- Charge
coupled bi-directional power MOSFET relay (PDF)
- Finger
touch activated switch (PDF)
- Machine
vibration triggers hour meter (PDF)
- Solid
state relay (PDF)
- Line-powered
Xenon flash transmitter (PDF)
- 9V
Xenon photoflash controller (PDF)
- AC
switching with TRIAC from TTL
- Control
120VAC relay with TTL
- Driving
a relay with a CPU
- Power-line
Appliance Controller
- DC
Motor Constant Speed Control
- Simple
Switched Servo Driver
- Combination-controlled,
fully customizable RF remote control
- Thermoelectic
controller (scriptable thermometer)
- Stepper
motor positioner
- Stepper
motor driver
- Thermostat
- Frequency
switch
- PIC16F84
RF remote controller
- H-Bridge
shematic
- DS1821
programmable thermostat
- SN754410
Dual Motor Driver Board
- Hot
Water Tank Indicator
- Temperature
monitor
- Cold
activated switch
- Voltage
comparator switch
- Dark
activated switch
- DC
Push Button Motor Control Circuit
- Light
detector
- DC
Motor Reversing Circuit
- Sound
operated switch
- LDR light/dark
activated relay switch
- Touch Switches
- 6090 digital decoder
schematics
- Assorted
relay control circuits
- Adjustable
Voltage motor controller
- Serial servo
controller
- DC Motor-Driver
H-Bridge Circuit
- Furnace
fan speed controller
- Remote
two-wire stepper motor positioner
- Drill
shaft speed monitor
- PWM Motor
Speed Controller / DC Light Dimmer
- Constant
Temperature Circuit
- PWM DC
Motor Speed Control
- Solenoid
starter
- CO2
controller for planted tanks
- Light
activated relay
- Voice
activated switch - MC2830
- Delayed shutter
control for Kodak DC-20
- Gasoline generator
automatic throttle controller
- Block
power switching module
- MOSFET
H-BRIDGE schematic and theory
- Drum
machine
- Simple
MIDI-to-CV converter
- Sounds
effects unit
- ETI
603 Sequencer
- Synthesizer
schematics
- Peak-reading meters
- Octave
screamer
- Amiga
MIDI interface
- Apple
Mac to MIDI synthesizer interface cable
- Apple
Macintosh MIDI interface schematic (basic version)
- Apple
Macintosh MIDI interface schematic (deluxe version)
- Standard
MIDI to MIDI interface cable diagram
- Simple
MIDI switcher
- MIDI
interface / cable tester
- MIDI
keyboard
- MIDI
merger schematic
- 25-pin
PC serial port to MIDI synthesizer interface cable
- 9-pin
PC serial port to MIDI synthesizer interface cable
- Serial
MIDI interface
- Microcontroller
MIDI interface
- MIDI
keyboard circuit
- Spring
reverb unit
- MIDI
status indicator
- Colour
organ light
- MP3
Player
- Metronome
and pitch generator
- Mini
metronome
- Compact
Flash / IDE MP3 Player MKI
- Simple
colour organ
- Guitar fuzz
effect
- 8 note tune
player
- Colour
(Sound) Organ
- Transisor
organ
- BookPC
Car MP3 Player
- Yet
Another Mobile MP3 Player
- Wave
Multiplier for music synthesizers
- Audible
metronome
- Visual
metronome
- Vibrato
Circuit for Guitar, Steel, Bass, Etc.
- Zonk
Machine and Treble Booster
- Simple
line mixer
- Simple
MIDI tester
- ASM-1
Analog Synthesizer Module
- MIDI Controller
Footpedal
- DIY Serial MIDI
Interface (80C51/80C31 Version)
- Electronic
metronome
- Sound
Effects Generator
- Sound
Effects Generator 2
- Digital
Guitar Tuner
- Drum tone oscillators
- Stereo compressor
- Analog MIDI synthesizer
- Spring reverb
- MIDI to CV interface
- Dual phantom power
pre-amp
- Four channel fuzz box
- Theremin controller
- Vocal zapper
- MIDI
Drum Machine Analog Input Schematic
- Kinetic
images from sound
- Guitar
Reverb Pedal
- Guitar Tremolo
Unit
- Spring Reverb Unit
For Guitar
- Ultra Simple Bass
Guitar Compressor
- Vox AC30 Guitar
Amplifier Simulator
- Guitar Vibrato
Unit
- Musical Instrument
(Expandable) Graphic Equaliser
- Midibox
64
- I2C
printer port adaptor
- RS232C
Level Converter
- Isolated
Full Duplex RS232C Interface
- PC
Serial Receiver (57.6K Baud / TTL & CMOS)
- PC
Serial Port Receiver
- Parallel
Port Relay Interface
- PC based
7-segment rolling display
- DB-9
Connector to DB-25 (both RS-232)
- Mac
Serial Port (RS-422 DIN-8) to RS-232 DB-25
- Parallel
print capture system
- ZX96-Mainboard
- Modem Rockwell
RCV336/ACF model V1433VQR ext.
- Genius Mouse
schematics
- EEPROM programmer
- Macintosh
interface for X10 MR26A Wireless Receiver
- Sound
Card Interface with Tone Keyer
- RGB
oo Monochrome converter - Matches impedance of PC to CCTV monitor
- Ericsson phone to PC
serial port interface
- PC
serial port receiver
- Parallel
port relay interface
- ISA
48 I/O digital card
- PC
infrared iRDA interface using TFDS 4500
- Jupiter
card programmer
- USB
to RS232 Dongle
- Commodore
64 24-bit parallel port interface with 8255
- Parallel
(Printer) Port Interface
- RS-232 line
monitor and loopback cables
- The
KD2BD Pacsat Modem
- A
Serial Infrared Remote Controller
- PC Serial and
Parallel Port Software and Interfaces
- Interfacing
16x2 character :LCD to parallel port
- RS-232
Protocol Analyser
- Interface
cable for Casio QV-200 digital camera
- Radio
clock for PC's
- Serial
to ECP interface
- A
PC-Based LowFER Frequency Synthesizer
- General purpose
48-bit ISA parallel I/O card
- Power
from RS-232 port
- PCI to
ISA converter
- WatchDog
for ISA Bus
- 4-channel
8-bit analog-to-digital converter for PC
- Printer
port ADC
- Parallel
port ADC based on MAX147
- Analog
Signal Acquisition for PC Printer Port
- More
accurate PC/AT clock
- Getting
power from RS-232 interface
- Barcode
scanner
- Build
your own iRDA SIR Transceiver (Dongle) using MCP2120
- PC
thermometer
- Dive
computer interface
- Parallel
port servo controller
- GPS receiver
(Gamin, Eagle etc) to PC interface cables
- Connect
two CD-ROM drives to one soundcard
- Headphone
driving circuit for soundcards
- Get
power out of PC parallel port
- Null
Printer Adapter
- PC
speaker volume control circuit
- How
to get power from PC to your circuits
- RS-232
surge protection
- Simple
RS-232 serial port buffer circuit
- Get
power out of PC RS-232 port
- Sound
Blaster Microphone Preamplifier
- Sega
3D glass interfacing circuits
- Convert
Atari-style joystick to PC joystick port
- Fake
Joystick circuit
- Using
the joystick port as general purpose input
- Connect
other circuits to PC joystick port
- Schematic
of a standard PC joystick
- Simple
PC SmartCard reader
- Fax
to modem interface
- PC
interface for point controller
- Linux Infra-red Remote Control (LIRC)
- Homebuilt RS232 LCD
Interface
- Compter
microphone
- Laptop
Computer Serial Port Power Booster
- Assorted
computer interface circuits
- HamComm
Interface
- Apple II/II+/IIe
IDE Drive Interface
- Basic Stamp I &
PC Relay Controller
- CompactFlash
to IDE interface
- ATX
power supply schematic
- X-Y
plotter for PC
- PC
based cable tester
- Hi-Fi PC Speaker
System
- IDE
hard-disk interface for Amiga 500
- How to construct
Garmin GPS receiver interface cables
- iRDA
printer adapter
- 160
Baud ALDL Hardware Interface
- AT PC Power
Supply 1
- AT PC Power
Supply 2
- AT PC Power
Supply 3
- AT PC Power
Supply 4
- AT PC Power
Supply 5
- iLINK
Interface
- Digital
Signals Decoding Interfaces
- 9-pin
null modem cable
- Simple RS-232
receiver
- +5v from RS-232
- LM78L05
- RS232 - Lowe
HF-225 interface
- 24-bit
parallel port interface with 8255 for Commodore computer
- RS232 to IrDA
convertor using Vishay TOIM3232
- Interfacing
PC sound card to SSB rig
- Supply
Derives Power From 3-Wire RS-232 Port
- 24-line PC
digital interface (PDF)
- Tilt
sensor for the PalmPilot
- Casio
interface circuits
- SHARP
palm-top/hand-held to RS232 serial converter
- MIDI
interface for Palm computers
- MIDI
interface for Palm cradle
- MIDI
interface for Visor USB
- MIDI-USB
Cradle for Visor (Deluxe, Platinum)
- MIDI
interface for Visor
- Interfacing
ultrasonic range finder to BrainStem
- Hamamatsu
UVTron Interface to a BrainStem
- Pulse
Shaping on the Palm Pilot
- Casio
interface cable
- Casio
organiser hardware
- Casio
datalogger
- Interfacing
ADXL202 accelerometer to PalmPilot
- PalmPilot
audio interface
- PalmPilot
cradle to modem adapter
- PalmPilot
connector pinouts
- PalmPilot
serial port interface
- PalmPilot
memory schematics
- Aladin
interface
- PalmPilot turbo boost guage
interface
- IBM
PC keyboard to PalmPilot interface
- Aladin
interface using op-amp
- Wireless
local network for PalmPilot (large PDF)
- ±12V
supply accepts 9 to 30V inputs
- Power
supply provides +5VDC regulated, +10VDC unregulated and 7.5VAC
- Alkaline
battery charger
- Basic
increase in DC voltage
- Power
Tool Torque Control
- Generating
Negative 5 Volts from 9 Volt Battery
- LED
Battery Condition Indicator
- LM317
Variable Voltage Regulator
- LM317
Regulator With Pass Transistor
- High
Current Regulated Power Supply
- Simple
Variable Voltage Source
- Various
switching power supplies
- Variable
3 - 24 Volt / 3 Amp Power Supply
- 2
watt switching power supply
- Variable
Voltage and Current Power Supply
- Low
Power DC to DC Converter
- Constant
Current Battery Charger
- Intelligent
NiMH/NiCd switched mode fast charger
- Variable
DC power supply
- Nicad
battery charger
- Simple
power supply
- Voltage
converter
- Bench
power supply
- Easy
power supply
- Valve
power supply
- 6V to 12V
Converter
- Tesla coil /
HV generator
- High
Current Power Supply
- Dual
Polarity Power Supply
- High
Voltage High Current Power Supply
- Transformerless
Power Supply
- Fixed
Voltage Power Supply
- Voltage
Inverter
- Voltage
Inverter
- Dual power supply
- 1A Variable
Regulated Power Supply
- Negative
voltage generator
- 12V
battery capacity tester
- NE555 Low
Voltage Battery Disconnect Circuit
- 13.5KV
power supply
- Kirlian
device supply
- LM317
adjustable power supply
- LTC1265
Nicad charger
- Single cell
lithium battery charger
- Smart battery
charger
- Battery
charge indicator
- Lead acid
trickle charger
- 12B Battery
condition indicator
- 33 Volt
DC To DC Converter
- Automatic
AC voltage (110/240) selector
- Variable
0-5A Current Source
- Ground
Fault Interupter
- Intelligent
battery charger
- 12 Volt
DC Load Control and Battery Protection
- Low
battery indicator
- Variable
power supply
- Switching
Power Supply
- Low
Power DC Quadrupler
- Surge
protector
- Ultimate
power supply
- Variable
Regulated Power Supply
- Power
reminder beeper (PDF)
- Unplugged
power cord alarm
- Machine
power loss beepter (PDF)
- Low-dropout
12V regulator (LM324)
- HV
supply: 12VDC in, 12KV out
- Generating
-5VDC from +5VDC
- Filtering
PC bus POWER
- Bidirectionall
power inverter
- Nagative
voltage generation using 555 timer
- High
current regulated power supply
- One 9V
battery gives +18, +25, +33V
- +9V *and*
-9V from one battery
- Battery
charger
- Adjustable
power supply using LM317
- Simple
+5V power supply circuit
- 12 Vdc - 120 Vac
Inverter Schematic
- +12V/-12V
Power supply unit
- +/-12V
-> +/-5V Power unit
- +5V
Switching regulator (1)
- Switching
regulator (2)
- Electric
power controller
- +30V
power supply with +5V
- +30V
DC-DC converter
- DC/AC
inverter (2)
- DC/AC
inverter (1)
- PIC16F873
DC motor speed controller
- 5v
Regulated Power Source
- 12V
30A power supply
- Dual
regulated power supply
- Fuse
blown indicator
- Gyrator
circuit
- Variable
power supply
- LM317
Regulator Circuit
- Nicad
battery charger
- Regulated
12V supply
- Unregulated
power supply
- Snowmobile
GPS power adapter
- Simple
switching power supply
- Assorted
power source and control circuits
- 12
volt battery monitor
- 12
volt power supply
- 5
volt power supply
- Battery
voltage monitor
- LM3914
battery monitor
- Multiple
voltage power supply
- Voltage
doubler
- Voltage
inverter
- Automatic
Reset Circuit for Astron Power Supply's
- One-hour
battery charger
- Battery
pack capacity indicator
- Prevision
half-wave AC to DC converter
- Unity
gain half-wave rectifier
- PWM
Motor Speed Controller / DC Light Dimmer
- PWM
Motor/Light Controller
- Low
Power LED Voltmeter
- PWM
Motor/Light Controller
- PWM
Motor/Light Controller variants
- Low
Power LED Voltmeter
- Temperature
Controlled NICD Charger
- Simple Capacitance
Multiplier Power Supply For Class-A Amplifiers
- Simple DC Adapter
Power Supply
- Variable Dual Lab
Power Supply
- Battery
Charger Ideas
- Power
control for arc welders and other inductive loads
- Charger
for gel lead acid batteries
- 12V to
120VAC inverter
- Nicad
battery cycler
- Micropower
10ppm/°C, +/-5v reference
- Battery
Characterizer
- Nicad
Battery Discharger/Capacity Indicator
- 200 Watt
Modified PC Power Supply 13.5 Volt 14 Amp
- CW
RECEIVER 40/80 meter CW receiver
- TRF AM Receiver
circuit
- WLW 500KW
Transmitter Schematic
- AM-Receiver
for Aircraft communication (118.250MHz)
- AM
receiver for aircraft communications
- 80 Meter CW
ARDF receiver
- CW
zero beat indicator (PDF)
- Build your own
VLF Receiver
- Receiver
building blocks
- Simple
wireless radio data link
- Convert
2m VHF FM PMR transceiver Motorola Radius M110 into an amateur radio
- Vibrating pocket bug
detector
- 2MHz
RF Oscillator
- 50-150MHz
Overtone Oscillator
- Simple
Op-Amp Radio
- UHF - 100W
Transistorized amplifier
- 50MHz
Converter
- Superregenerative
27MHz receiver
- RF
front-end for triple conversion GPS receiver
- 2M -
20M transverter
- Improved
CMOS RF PLL sythesizer
- Harmonic
oscillator
- Direction
finder system
- One
transistor regenerative receiver
- Synthesized
HF receiver
- TBA120
narrowband FM receiver
- TDA7000
receiver
- ZN414
receivers
- 10W HF
linear amplifier
- 500W
HF linear amplifier
- 3W HF
QRP linear amplifier
- Phasing
SSB exciter
- 500mW
HF linear amplifier
- Generic
VHF power amplifier
- 10.7MHz
FM detector
- RTTY
terminal unit
- Q-multiplier
- CMOS
RF PLL sythesizer
- No-tune
10GHz transceiver
- No-tune
1296, 2304 AND 5760MHz transceiver
- 13cm
PSK transceiver for 1.2Mbit/s packet radio
- Wide-band
FM transceiver
- 3W FM
Transmitter
- Crystal
radio
- Op-Amp Radio
- Car
radio tunes the Amateur Bands
- Crystal
set that requires no antenna
- 80m Direct
Conversion Receiver
- A compact
L-match ATU for portable use
- Morse
Adaptor for your VHF/UHF FM rig
- An
end-fed antenna, L-match coupler and resistive bridge for HF
- AM
Broadcast Band Regenerative Receiver
- 50 MHz
to 146 MHz Converter
- Hear
Amateurs on your Shortwave Radio!
- Compact
20 14 MHz direct conversion receiver
- Hear
Amateurs on your FM Radio!
- RF
actuated CW monitor
- LF to
HF Converter
- Super 80
ultra-simple SSB receiver for 3.5 MHz
- Class
B series modulator
- L-Band PHEMT LNA for
GPS, Inmarsat etc
- Advanced VHF
power meter
- The MRX-40
Mini Receiver
- Phase Shift
Radio Direction Finder
- 23cm
Data Transceiver
- UHF
oscillator
- Economoy
short-wave radio
- Linearized
RF detector
- Two-band
radio
- Shortwave
conveter for scanners
- FM Bug
- AM Radio
- Toroidal
coil RF shortwave receiver
- Crystal
radio
- AM
Broadcast Band Active Antenna
- Active
antenna with gain
- Ham Band
VFO
- HF
Signal generator
- Simple
AM Radio Receiver & Amplifier
- Bug detector
- 175KHz
inductive pulse receiver (PDF)
- 200-400
MHz voltage controlled oscillator
- AM/FM/SW
active antenna
- RF
Sniffer <.5 to >500 MHz
- Demodulator
Schematic/Design
- AM
BCB radio receiver
- Regenerative
shortwave receiver
- DSBSC
(Double Side Band Supressed Carrier)
- GPS (L1)
Jammer
- Frequency
Synthesizer
- Digital
Automatic Gain Control (AGC)
- Four Channel
Wireless Transmitter and Receiver
- Talking
receiver
- 418MHz
Control RX/TX
- PLL
synthesizing oscillator (1)
- PLL
synthesizing oscillator (2)
- PLL
synthesizing oscillator (3)
- 2N2222 40 Meter CW/DSB
Transceiver
- Yaesu
FT-736R doppler compensation
- AM
receiver
- Field
strength meter
- MPF102
receiver
- MW
preamplifier
- Q
- Multiplying Loop Antenna
- SW
aerial amplifier
- Simple
field strength meter
- 4
band double-tuned preselector
- UHF
Amplifier
- UHF
Preamplifier
- ZN414
AM receiver
- ZN414
shortwave receiver
- Phased
lock loop schematic
- 30M
PSK31 Transceiver
- SOP
receiver (PDF)
- SOP
direct conversion receiver
- Receiver
- 30m direct
conversion receiver
- Popcorn direct
conversion receiver
- 40m direct
conversion receiver
- 80m direct
conversion receiver
- 136 kHz direct
conversion receiver
- One
Watt 2.45 GHz Linear Amplifier
- 222 MHz Transverter
- VFO from 2001
ARRL Handbook, page 17.74
- VFO from
2001 ARRL Handbook, page 14.20
- Assorted
RF circuits
- 14MHz
SSB 10mW Transceiver
- Building
a Simple LF Exciter
- Yaesu band
decoder schematic
- 5 watt,
80 meter QRP CW Transceiver
- How to Build a
300MHz AM, RF Remote Control System
- Penncrest
5905 Stereo Receiver
- Wireless
remote control system
- RF
Modem Robotics Project
- PLL
FM transmitter
- Improved FM Stereo
Modulator
- Smooth
Tone Clickless CW Sidetone Generator
- Variety
of receiver converter projects
- One
transistor FM receiver
- 42
Mc Band to 88 Mc Band (retrofit converter) Project
- Crystal
radio circuits including diode performance comparison
- 50MHz Assistant (Preamp
& Power Amp.)
- Bug
detector
- Basic RF
oscillator
- AM/FM/SW active
antenna
- Superregenerative
27MHz receiver
- RX3302
receiver module schematic
- 49MHz
walkie-talkie
- Radio
Control Electric Switch
- 56K RF Modem
- Crossed
dipole GPS antenna
- 80M
ARDF direction finder
- Solar charge
controller
- High
efficiency solar powered motor driver
- Solar
robots
- Solar Tracker
- 1381
solar engine
- D1
solar engine
- FLED
solar engine
- PM1
solar engine
- Sun tracking
circuit for solar arrays
- Solar power
recharger
- Solar power
supply
- Solar
car array controller schematic
- Solar
car battery monitor schematic
- Solar
car brake controller schematic
- Solar
car main controller schematic
- Solar
car display controller schematic
- Solar
car electrical design and circuit index
- Portable solar battery
charger
- Sensor
Electronic Tracker with H-Bridge Drive
- Sensor
Electronic Tracker with Simple Solar Charge Controller
- Solar tracking
control system
- LED7 solar tracker
- Solar
step-down regulator
- Zener-based
solar engine
- AA
battery solar charger
- AA
battery solar charger
- Solar
Panel Charge Controller / Low Voltage Disconnect Circuit
- Solar
Panel Current Meter
- SCC2 10 Amp
Solar Charge Controller
- Solar
Charged LED Flashlight
- AA
battery solar charger
- Solar
Panel Charge Controller / Low Voltage Disconnect Circuit
- Solar
Panel Current Meter
- Solar
cell Nicad charger
- Solar powered
dock lamp flasher
- Telephone
In-Use LED Indicator
- Telephone
In-Use Relay Controller
- Telephone
audio interface
- Infinity
Transmitter Schematic and Plans
- Digisound
ring modulator
- Incoming
call indicator
- Telephone
Ring Generator Using 60Hz Power Transformer
- Telephone
Ring Generator Using Switching Power Supply
- Telephone
In-Use LED Indicator
- Telephone
In-Use Relay Circuit
- Telephone
Audio Interface
- Home made PBX / PABX
- Ringing
Phone Light Flasher
- Phone
Busy Indicator
- FM
Telephone Bug
- Cut Phone
Line Detector
- Simple
Phone Tap
- Telephone
Hold Button
- Telephone
Recorder
- Cut
phone line detector
- Simple
phone tap
- Telephone
auto record
- Telephone
hold button
- Telephone
recorder
- DTMF
tone decoder (Basic Stamp / SSI-202)
- DTMF
Generator/Decoder
- Telephone
recording circuit
- Interface
cables for various cell phones
- Nokia 3210 MBUS
interface
- Telephone
music on hold box
- Telephone
ring controlled relay
- 1-line
telephone status indicator (PDF)
- Line
in use indicator (PDF)
- 4-line
telephone status indicator (PDF)
- Caller
ID decoder
- Telephone
in use light
- Detecting
a telephone RING
- Phone
In-Use Light
- Phone
to audio interface
- Phone
Off-Hook Indicator
- 'phone
rang' indicator light
- Phone
Line to Audio
- Phone
in-use
- Telephone
Line Monitor
- Use
old phones as an intercom
- Phone-In-Use
indicator
- Hold
function for Telephone
- Digital/Standard
Phone Line Tester
- Caller
ID decoder part 1
- Caller
ID decoder part 2
- DTMF
decoder / logger
- FM
telephone bug
- Universal
telephone hold
- Talking phone
dial monitor
- Red
box detection circuit (PDF)
- Telephone
line simulator
- Telephone
privacy adapter
- Telephone
ringing circuits
- Simple
circuit to connect telephone equipment to audio mixer
- NCDS Interface
Schematic for Nokia 3110, 8110, 8110i
- Assorted
telephone circuits
- Telephone
call director (mini PABX)
- Phone
line sentinel
- Telephone
ring detector
- Telephone
line simulator
- Cut phone
line detector
- Telephone ring
detector - 4N35
- Phone-line
privacy circuit
- Telephone
autodialler
- Taxi
phone automatic dialler
- Frequency
counter
- Tri-Waveform
Generator
- 50
MHz frequency counter, voltage meter & SWR/PWR indicator
- Owens Bridge
Inductance Measurement Device
- ESR
Meter
- Line
Output / Flyback transformer tester
- PC-Based
Digital Storage Oscilloscope (DSOA)
- PC
Based Digital Storage Oscilloscope Mk3
- Simple
6-Digit 40MHz Frequency Counter Module
- Automatic
stud detector
- Capacitance meter
- Capacitance meter
- AC
Line Current Detector
- Triangle
and Squarewave Generator
- Signal tracer
/ injector
- Voltage
probe
- Live
line detector
- 220V
live wire-in-wall scanner
- Grid dip
meter
- PCB
VSWR bridge
- Electric field
& leakage detector
- Simple
polarity detector
- RCM710 Electronic
Scale
- 3 - 12 MHz
Signal Generator
- Some
simple test equipment to build
- RF Power
Meter for the QRPer
- Dip
Oscillator for HF
- Two
Tone Audio Oscillator (use for SSB tests)
- Audible
continuity tester
- Wire tracer
- Signal
generator for signal tracer
- Electronic
level
- Digital volt
meter
- Adjustable
continuity tested
- Simple
pH meter
- Temperature
compensated pH meter
- pH
meter with calibration
- Four
Channel Oscilloscope Adapter
- Arbitrary
Waveform Generator
- Digital
Pressure Gauge
- Remote
Field Strength Meter
- Digital
frequency counter
- Function
generator
- High /
Low indicator
- AC/DC
LED Indicator
- Micro
ohm meter
- Micro
volt probe
- MOSFET
tester
- Power
factor meter
- Ramp
generator
- LASER/LED
light output intensity meter (PDF)
- Frequency
and capacitance meter
- Resistor
decade box
- 1.2GHz
frequency counter
- Simple
light sensor adapter for oscilloscope
- Time
Domain Reflectometer (TDR)
- UTP
cable tested
- pH
Meter
- Multi
Wire Cable Tester
- Connection
tester
- EMF
field probe
- Function
generator
- Logic
probe
- Zener
diode tester
- Mini DDS
(direct digital synthesizer)
- LCD
frequency counter (PIC16F84)
- Light
meter
- Tonal
voltmeter gives audible indication of voltage level
- AC
Millivoltmeter
- DC
millivolt meter
- Fluxmeter
to DVM input
- XR2206
function generator
- Low-cost
dot/bar generator
- Milli-ohm
adapter
- Deflection
amplifier for oscilloscopes
- Polarity
sensing continuity tester
- Sensitive
RF voltmeter
- Signal
injector
- Pulse
Reading Logic Probe
- Pink Noise
Generator for Audio Testing
- Audio
Millivoltmeter
- Audio Test
Oscillator
- Full Featured
Transistor Tester
- Opamp Design and
Test Board
- Microphone Circuit
Test Oscillator
- Distortion
Analyser
- Self Oscillating
Amplifier for Distortion Testing
- 120MHz
frequency counter
- Build
a Magnetic Field Immunity Tester
- 555
Timer IC Tester
- 555 go
/ no-go tester
- 12V
Lead-Acid Battery Monitor
- Continuity
tester 2
- Continuity
tester
- Logic
probe
- 4-channel
DSO for oscilloscope
- Beeper to find
short circuits
- 220V
wiring detector
- In-circuit
electrolytic tester
- PIC
logic probe with pulser
- Budget timer
- 1
Second Time Base From Crystal Oscillator
- Countdown
timer with relay
- DDS using
AD9835
- 1
Second Time Base From Crystal Osc.
- Power-On
Time Delay Relay Circuit
- Low
Voltage , High Current Time Delay Circuit
- Power-Off
Time Delay Relay Circuit
- Generating
a Delayed Pulse With a dual 555 Timer
- 1KHz
Sinewave generator
- Timed
beeper
- Time
Delay Relay
- Time
Delay Relay
- Wide-swing
Variable Crystal Oscillator
- Circuit
that momentarily closes a pair of contacts at long intervals
- Long period
timer
- 555 time
delay circuit
- Low frequency
clock
- 4-Bit
binary clock
- Onboard
Fogger Timer
- Colpitts
1 to 20 MHz Crystal Oscillator
- Divide
By 1-1/2 Circuit
- Simple
sinewave generator
- Two
Transistor Sine Wave Oscillator
- 10 Hz to
10 Khz VCO with Square and Triangle wave
- Line
powered 60Hz clock generator (PDF)
- Micro-power
pulse generator (PDF)
- Darkroom
camera shutter timer
- Divide
by 1.5 counter (PFD)
- High-output
square wave generator (PDF)
- D
Flip-flot one-shot circuits (PDF)
- Clock
divider
- Clock
doubler
- CMOS
oscillator
- Crystal
32.768KHz CMOS Oscillator
- Crystal
oscillator
- Cheap
40KHz clock
- Stable
40KHz clock
- 'Rounding
Off' a square wave
- Switch
debounce using 555
- Square
wave to sine wave converter
- Day
/ Night / 24 Hour Select Sensor
- One
transistor timer
- Variable
timer
- Micropower
pulse generator (PDF)
- Square
wave oscillator
- Triangle
wave oscillator
- Sawtooth
wave oscillator
- Sine/Cosine
wave oscillator
- 555
timer
- 555
oscillator
- Stable
multivibrator (IC)
- Stable
multivibrator (Transistor)
- Push
Button Switch Debouncer
- Square
wave oscillator
- 5
to 30 Minute Timer
- NE555
Basic Monostable
- Mini DDS (Direct
Digital Synthesis)
- Astable
Multivibrator
- AD9852
DDS schematic
- A GPS receiver
based frequency standard
- Adjustable
phase quadrature generator
- Counter
speed doubler
- Fast
rise-time multivibrator
- Sample-hold
controlled oscillator
- Sine
wave oscillator
- LM3900
sine wave oscillator
- CMOS
4011 oscillator
- Simple
frequency doubler
- Sinewave
frequency doubler
- 555
timer circuits
- Linear
voltage to frequency converter
- Voltage
controlled triangle / square generator
- Monostable
multivibrator
- Clock
generator
- 555 Timer
Tutorial + Circuits
- Frequency
comparator - 74HCT74
- Clock
frequency doubler
- Versatile
electronic timer
- Li'l 7 AM
Transmitter Schematic
- Portable 40W
CW transmitter
- A 3m
(100 MHz) small bug
- Basic
FM Transmitter
- Micro
Power AM Broadcast Transmitter
- FM
Beacon Transmitter (88-108 MHz)
- 1
valve CW transmitter
- 250mW
HF CW transmitter
- 2
valve CW transmitter
- Transmitter
using LM317
- 5 Watt
HF CW transmitter
- Simple FM
microphone
- FM bug
- High
power FM bug
- 27MHz
AM/CW transmitter
- Easy
2-meter transmitter
- QRP HF
transmitter
- Spark
gap transmitter
- QRP
SSB transmitter
- Crystal
controlled FM transmitter
- 150mW
FM transmitter
- FM
transmitter
- Two Valve
40m CW Transmitter
- Frequency
agile 80m CW QRP transmitter
- 80
metre DSB transmitter
- One
Valve CW transmitter
- 3W
FM transmitter
- FM
transmitter (room bug)
- Microphone
Transmitter (bug), 100 MHz
- Small
FM transmitter
- Wireless
microphone
- XTAL locked
tone transmitter
- AM
oscillator for wireless microphones
- Wireless
microphone
- 1W CW
Transmitter
- Simple Low FER
Transmitter
- 7Mhz AM/CW
Amateur Radio Transmitter
- VHF
FM transmitter
- Simple FM
transmitter
- Wireless
microphone
- Shortwave
radio transmitter
- 175KHz
inductive pulse transmitter (PDF)
- 7MHz QRP
transmitter
- Small
Radio Transmitter
- FM
Telephone Transmitter
- FM
transmitter
- 4
transistor transmitter
- FM
transmitter
- Op-amp
based FM transmitter
- Tracking
transmitter
- 5W
PLL Transmitter
- Miniature
FM transmitter
- Sensitive
FM transmitter
- Simple
RF transmitter
- 1.5
volt tracking transmitter
- Tracking
transmitter
- Micro
Power FM Broadcasting Circuits
- Low Power FM
Transmitter
- RF/SS Handie
Hopper Transmitter Schematic
- 30-Meter QRP
Transmitter for Morse Code
- Miniature
FM Transmitter #1
- Miniature
FM Transmitter #2
- Miniature
FM Transmitter #3
- Light
sensing RF transmitter
- Micro-Spy
with FETs
- Micro-Spy
with USW
- Micro-Spy
with TTL
- AM radio tone
transmitter - 4049
- Op amp based
AM radio transmitter
- 433MHz
transmitter using SAW resonator
- Video Clock
Superimposer
- Simple TV
transmitter
- Audio /
video distribution amplifier
- 10GHz
video link
- Experimental
macrovision remover
- VHF/UHF
TV modulator
- LH0032
video amplifier
- LM359N
video amplifier
- 8
x 8 Audio-video switch
- Macrovision
code remover
- 2.3GHz
ATV Transmitter
- Driver for
multiple VGA monitors
- CCD
(charge coupled device) support board
- Closed-Caption
Decoder
- PIC-Tock
video clock
- Video/Audio
Wireless Transmitter
- Video
signal amplifier
- RGB
video digitizer
- Digital
video processor
- MC1374
based TV transmitter
- TV
transmitter
- Simple TV
transmitter
- Color Bar
Generator
- Microcontroller
test pattern generator
- NTSC
Video Distribution Amplifier
- Commodore
RF modulator
- Video
signal edge enhancement
- Video
amplifier
- Video
stabilizer
- Video/Audio
Wireless Transmitter
- 4
Stage 555 Timer for Video Cam Control
- Digital
volt meter with video output
- VHF
Audio Video Transmitter
- LH0024
video amplifier
- Video
to RF Modulator
- Video
switcher (PDF)
- Video
switcher
- TV/Radio
antenna cable galvanic isolator
- S-video
to composite video adapter
- VGA
converter for video projectors and fixed frequency monitors
- VGA
to TV converter
- VGA
to PAL and NTSC converter
- PIC micro
frame grabber (TDA8708)
- Low
cost audio/video modulator and transmitter
- Many video amplifier
circuits includiing transmission over UTP (PDF)
- Commodore
64 Video Modulator 251025 Schematics
- Commodore
64 Video Modulator 251696 Schematics
- TV RGB signal
output from a SVGA graphics card
- Macrovision
removal
- Panasonic
TR-329B AC-DC Portable TV
- Homebuilt
video digitizer Mark I
- Homebuilt video
digitizer Mark II
- Audio-video
switch
- TV
transmitter (PDF)
- CCD
camera frame grabber
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