Electronic projects

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• "SimpleMouse" Smartcardprogrammer
• 0-50V 2A Bench power supply
• 10 Amp 13.8 Volt Power Supply
• 100W RMS Amplifier
• 10W Audio Amplifier with Bass-boost
• 10W Mini Audio Amplifier
• 12 Volt 30 Amp PSU
• 12VDC Fluorescent Lamp Driver
• 15W Fm-transmitter
• 18W Audio Amplifier
• 1KHz Sinewave Generator
• 2 Transistor FM Voice Transmitter
• 200W audio amplifier
• 20dB VHF Amplifier
• 22 Watt Audio Amplifier
• 220 Volts Flashing Lamps
• 24 Hour Timer
• 24 Second Shot Clock
• 25W Mosfet audio amplifier
• 28 LED Clock Timer
• 2N3055 Power Amplifier
• 3 Channel Spectrum Analyzer
• 3 Line Mixer
• 3W FM Transmitter
• 4W FM Transmitter
• 5 to 30 Minute Timer
• 5,000W ultra-light, high-power amplifier, without switching-mode power supply
• 50 Watt Amplifier
• 500W low cost 12V to 220V inverter
• 6 Channel Auto Reverse Sequential Disco Running Lights
• 60W Bass Amplifier
• 60W Guitar Amplifier
• 60W Linear amplifier
• 6V to 12V Converter
• 6V Ultra-Bright LED Chaser
• 7 Segment LED Counter
• 73 MHz Hallogene Lamp Radio-Controlled
• 8 Line Intercommunication using 89c51
• A small FM transmitter (SMD)
• AC Current Monitor
• Adjustable High/Low Frequency Sine wave generator
• Adjustable Strobe Light
• Air Flow Detector
• AM FM Simultaneous Transmitter Using Digital IC
• AM Receiver
• AM To FM converter
• AM Transmitter
• Amplified Ear
• Amplifier 2x30W with STK465
• Amplifier of acoustic frequencies with preamplifier
• Amplifier Timer
• Asymmetric Timer
• ATMEL 89 Series Flash Microcontroller
• Audio Perimeter Monitor
• Auto Heat Limiter for Soldering Iron
• Automatic Headlight Brightness Switch
• Automatic Loudness Control
• Automotive 12V to +-20V converter (for audio amplifier)
• Basic UPS Power Supply
• Bass-treble tone control circuit
• Batteries charger & PSU - ideal for digital cameras
• Battery-powered Night Lamp
• Bedside Lamp Timer
• Beeper to find short circuits
• Bench Amplifier
• Bicycle back Safety Light
• Black Light
• Brightness Control for small Lamps
• Capacitance Meter
• Capacitive Sensor
• Car Battery Charger
• Cellular Phone calling Detector
• Combinational Conjuring Trick
• Connection Tester
• Continuity Tester
• Courtesy Light
• Crystal Tester
• Cuckoo sound Generator
• Cut Phone Line Detector
• Dancing LEDs
• Dark-activated LED or Lamp Flasher
• DC Motor Control Circuit
• DC Motor Reversing Circuit
• Deluxe Charge Rate Limiter for Small Capacity NiCad Batteries
• Digital Radar Speedometer
• Digital Remote Thermometer
• Digital Step-Km Counter
• Digital Stopwatch 0-60sec
• Digital Stopwatch 0-99sec
• Digital Voltmeter
• Digital Volume Control
• Discharger for Receiver Battery Packs
• Dome Lamp Dimmer
• Door Alarm
• Doorbell for the Deaf
• Downed Model Locator
• Downed Model Locator II
• Dual Polarity Power Supply
• Dual Regulated Power Supply
• Economical Pump Controller
• Economy radar detector
• Electromagnetic field detector
• Electromagnetic Field Probe with Meter Output
• Electronic Canary
• Electronic Locker
• Electronic Siren
• Electronic Stethoscope
• Electronic Stethoscope
• Electronics Attenuator
• Emergency Light & Alarm
• EPROM adapter for ATMEL 89 Series Flash Microcontroller Programmer Ver 2.0
• Everything-that-moves ALARM
• Fading LEDs
• Fancontrol
• FET Audio Mixer
• Field-strength meter
• Field-strength meter
• Fixed Voltage Power Supply
• Flyback Transformer Driver
• FM radio (may be used with PC)
• FM Telephone Bug
• FM Transmitter Bug
• Fridge door Alarm
• Frost Alarm
• Funcard Programmer by Diesel
• Function Generator
• Fuse Monitor / Alarm
• Geomagnetic field detector
• Gold wafer cards
• Guitar Amplifier
• Headlight Flasher
• Headlights Timer
• Headphone Amplifier
• Heating System Thermostat
• High And Low Voltage Cut Off With Time Delay
• High Current Power Supply
• High Quality Intercom
• High Voltage Stun Gun
• Hot Water Level Indicator
• iButton electronic lock
• Infa-Red Remote Control
• Infra Red Remote Control Extender
• Infra Red Switch
• Infra-red Level Detector
• Infrared Detector
• Infrared gate 2
• Infrared Remote Control
• Insect Repellant
• Instrument panel lamp dimmer control
• Intercommunication (Intercom)
• Inverter
• IR Remote Control Extender Circuit
• IR Remote Control Jammer
• IR Remote Control Tester
• IR Remote Control Tester
• Jogging Timer
• Keys Finder
• Knightrider lights for model cars
• LASER Transmitter/Receiver
• Latching Continuity Tester
• LED Chaser
• Led display digital Voltmeter
• LED or Lamp Flasher
• LED or Lamp Pulser
• LED Torch
• LEDs or Lamps Sequencer
• Light switch
• Light/Dark Detector
• Lightning Detector
• Linear FM 30Watt
• Linear FM 50Watt with BLY90
• Linear Resistance Meter
• Live-line Detector
• LM317 VARIABLE POWER SUPPLY
• Logic Probe
• Low impedance microphone amplifier
• Low pass filter - Subwoofer
• Low Voltage Alarm
• Low-distortion Audio-range Oscillator
• Magic Wand Conjuring Trick.
• Magnetic Gun
• Magnetic-Radiation Remote-Control
• Mains Remote-Alert
• Medium range transmitter
• Metal Detector
• MILLIGAUSS METER.
• Mini efficient coil launcher from disposable camera flash
• Mini Metronome
• Mini-box 2W Amplifier
• Mosfet TESTER
• Motorola Hi-Fi power amplifier
• Multi Rocket Launcher
• Multi Wire Cable Tester
• Muscular Bio-Stimulator
• NE555 Basic Monostable
• Ni -Cd Batteries Charger
• Nicad Battery Charger
• Nite Rider Lights
• Nocturnal Animals Whisker
• Nostalgic Crystal Radio
• On-Off Temperature Control
• One-IC two-tones Siren
• Oscilloscope testing module (huntron circuit)
• Park Aid
• Periodic Timer
• Phoenix Programmer
• Phone "Hold" With Music
• Phone Busy Indicator
• Phono Preamplifier
• Photo Timer Circuit
• PIC diode tester
• PIC16F84A discolight effect with bass beat control
• Picoammeter circuit with 4 ranges
• Plants Watering Watcher
• PlayPIC®
• Ponyprog Circuit for ATMEL'S AVR
• Ponyprog Circuit for AVR & PIC16F84
• Portable Headphone Amplifier
• Portable Microphone Preamplifier
• Portable Mixer
• POT-PLANT POWER
• Precision Audio Millivoltmeter
• Precision Metronome and Pitch generator
• Precision Receiver Battery Low Voltage Alarm
• Producing your own Decrypt Viewing Card Mk2
• Pulse Charger for reviving tired Lead Acid batteries
• Pulse Width Modulation DC Motor Control
• Pulse-Generator & Signal-Tracer
• Pulsing Third Brake Light
• PWM Motor/Light Controller
• Quiz Circuit
• Rain Detector
• Receiver Battery Low Voltage Alarm
• Regulated 12 Volt Supply
• Remote Doorbell Warning Switch
• Repeating Interval Timer
• Reverse Bias Oscillator
• Ringing Phone Light Flasher
• Room Noise Detector
• S-video to RCA
• Salt Taster
• Seismic detector
• Self-powered Fast Battery-Tester
• Self-powered Sine to Square wave Converter
• Signal Tracer and Injector
• Simple but reliable car battery tester
• Simple DC motor PWN speed control
• Simple Digital Volume Control
• Simple Lie Detector
• Simple optical switch
• Simple Servo Tester
• Sleeping-Aid
• Small Radio Transmitter
• Soft Musical Telephone Ringer
• Solid State Power Controller
• Solid State Tesla Coil/High Voltage Generator
• Sound Effects Generator
• Sound Effects Generator 2
• Sound Level Indicator
• Sound Level Meter
• Sound Operated Switch
• Speaker Box Audio Amp
• Speaker Microphone Circuit
• Speed-limit Alert
• Static Electricity / Negative Ion Detector
• Stepper Motor Controller
• Stereo Preamplifier with Bass-boost
• Stereo Tube Amplifier
• Tan Timer
• Telephone amplifier
• Telephone Hold Button
• Telephone line monitor
• Telephone line monitor
• Temperature Monitor
• Temperature-controlled Fan
• The "UnFETtered Crystal Radio!
• The flashing Heart
• The Link "P" - Privacy Link! (Telephone Intercom)
• The Link 4+0 – Internal Intercom
• The Link A2B+1 (the Link Telephone Intercom - DTMF version)
• The Link Telephone Intercom – Every Home Should Have One!
• The Millipede
• The Original 2 Phone Link Design
• Three-Level Audio Power Indicator
• Time Delay Relay
• Time Delay Relay II
• Timed Beeper
• Touch Switch
• Touch Switch II
• Transformerless Power Supply
• Transistor Tester
• Transmitter FM 45W with valve
• TRIAC Light Dimmer
• Triangle / Squarewave Generator
• Triple Stroboscope
• TTL Power Supply with ‘Crowbar’ protection
• Two-wire Lamp Flasher
• Ultra-simple Voltage Probe
• Ultrasonic Dog Whistle
• UltraSonic Radar
• Unipolar Stepper Motor Controller
• Variable DC Power Supply
• Voice activated switch
• Voltage follower with 1G ohm input resistance
• Voltage Inverter II
• Voltage Monitor
• Whistle Responder
• XTal Tester
• Zener Diode Tester
• ZN414 Portable AM Receiver