دانلود بیش از 400 پروژه مختلف رایگان (حتما دریافت کنید)

1. 25W Mosfet audio amplifier
2. Two way cross-over 3500 Hz
3. Mini-box 2W Amplifier
4. 50 Watt Amplifier
5. 22 Watt Audio Amplifier
6. Low pass filter – Subwoofer
7. Low impedance microphone amplifier
8. 3 Line Mixer
9. Digital Volume Control
10. Electronics Attenuator
11. 18W Audio Amplifier
12. 200W audio amplifier
13. Amplifier 2x30W with STK465
14. 10W Mini Audio Amplifier
15. 100W Audio Amplifier
16. Portable Headphone Amplifier
17. 25W Mosfet audio amplifier
18. Precision Audio Millivoltmeter
19. Phono Preamplifier
20. Headphone Amplifier
21. Amplified Ear
22. Portable Microphone Preamplifier
23. Portable Mixer
24. Stereo Preamplifier with Bass-boost
25. 10W Audio Amplifier with Bass-boost
26. Automatic Loudness Control
27. Three-Level Audio Power Indicator
28. Guitar Amplifier
29. 60W Guitar Amplifier
30. 60W Bass Amplifier
31. Digital Volume Control
32. FET Audio Mixer
33. Stereo Tube Amplifier
34. 3 Channel Spectrum Analyzer
35. Amplifier of acoustic frequencies with preamplifier
36. Bass-treble tone control circuit

Automative:

1. Car battery Indicator
2. Pulsing Third Brake Light
3. Headlight Flasher
4. Speed-limit Alert
5. Park-Aid
6. Automatic Headlight Brightness Switch
7. Car Battery Charger
8. Electronic car ignition
9. Simple but reliable car battery tester
10. Synchronized multi-spark module (SMSM) for Electronic Ignition Devices (EID)
11. Nite Rider Lights

light and power control

1. Black Light
2. PWM Motor-Light Controller
3. Unipolar Stepper Motor Controller
4. Adjustable Strobe Light
5. Fancontrol
6. DC Motor Control Circuit
7. H-bridge
8. Dual Channel Servo Pulse to H-Bridge Interface
9. DC Motor Reversing Circuit
10. Dome Lamp Dimmer
11. LED or Lamp Flasher
12. 220 Volts Flashing Lamps
13. Bicycle back Safety Light
14. Two-wire Lamp Flasher
15. Courtesy Light
16. Battery-powered Night Lamp
17. LED or Lamp Pulser
18. Dancing LEDs
19. Fading LEDs
20. Brightness Control for small Lamps
21. Dark-activated LED or Lamp Flasher
22. LEDs or Lamps Sequencer
23. Temperature-controlled Fan
24. LEDs or Lamps Sequencer
25. 12VDC Fluorescent Lamp Driver
26. LED Chaser
27. TRIAC Light Dimmer
28. Infa-Red Remote Control
29. IR Remote Control Jammer
30. LASER Transmitter-Receiver
31. Pulse Width Modulation DC Motor Control
32. Stepper Motor Controller
33. Knightrider lights for model cars
34. Triple Stroboscope
35. 73 MHz Hallogene Lamp Radio-Controlled
36. On-Off Temperature Control
37. Simple DC motor PWN speed control
38. High And Low Voltage Cut Off With Time Delay
39. Solid State Power Controller
40. 6 Channel Auto Reverse Sequential Disco Running Lights

Micro

1. Classic PIC Programmer
2. SimpleMouse Smartcardprogrammer
3. Producing your own Decrypt Viewing Card Mk2
4. Phoenix Programmer
5. Gold wafer cards
6. Funcard Programmer by Diesel
7. Programmers for Jupiter Card
8. Ponyprog Circuit for ATMEL’S AVR
9. EPROM adapter
10. PIC diode tester
11. PlayPIC
12. Microcontroller Projects

Miscellaneous

1. Intercommunication
2. Keys Finder
3. SmartCard PC Emulator
4. Economy radar detector
5. S-video to RCA
6. One-IC two-tones Siren
7. Digital Step-Km Counter
8. Whistle Responder
9. Nocturnal Animals Whisker
10. Cellular Phone calling Detector
11. Cuckoo sound Generator
12. 7 Segment LED Counter
13. Simple Lie Detector
14. Time Delay Relay
15. Flyback Transformer Driver
16. Simple optical switch
17. Time Delay Relay II

osc & timer

1. Reverse Bias Oscillator
2. 1KHz Sinewave Generator
3. Self-powered Sine to Square wave Converter
4. Amplifier Timer
5. Low-distortion Audio-range Oscillator
6. Precision Metronome and Pitch generator
7. Bedside Lamp Timer
8. Timed Beeper
9. Mini Metronome
10. Jogging Timer
11. Tan Timer
12. Pulse-Generator & Signal-Tracer
13. Headlights Timer
14. Digital Stopwatch 0-99sec
15. Digital Stopwatch 0-60sec
16. 28 LED Clock Timer
17. Photo Timer Circuit
18. Adjustable High-Low Frequency Sine wave generator

Other

1. 6 Channel Auto Reverse Sequential Disco Running Lights
2. 8 Line Intercommunication using 89c51
3. 60W Linear amplifier
4. AM To FM converter
5. AM FM Simultaneous Transmitter Using Digital IC
6. Auto Heat Limiter for Soldering Iron
7. Simple but reliable car battery tester
8. Pulse Charger for reviving tired Lead Acid batteries
9. Batteries charger & PSU – ideal for digital cameras
10. 28 LED Clock Timer
11. A Laboratory Control System for Cold Atom Experiments
12. Simple DC motor PWN speed control
13. Synchronized multi-spark module (SMSM) for Electronic Ignition Devices (EID)
14. Electronic Locker
15. Electronic Stethoscope 2
16. High And Low Voltage Cut Off With Time Delay
17. An Improved Infrared Receiver with Status LED
18. 500W low cost 12V to 220V inverter
19. 73 MHz Hallogene Lamp Radio-Controlled
20. Logic Probe
21. Medium range transmitter
22. The Millipede
23. Nite Rider Lights
24. On-Off Temperature Control
25. Photo Timer Circuit
26. Plants Watering Watcher-2
27. PlayPIC
28. Mini efficient coil launcher from disposable camera flash
29. RJ45 Network card to IR communication
30. Adjustable High-Low Frequency Sine wave generator
31. Solid State Power Controller
32. Digital Radar Speedometer
33. TTL Power Supply with ‘Crowbar’ protection
34. The TupperTank® (A Cheap and Easy to Make Hobby Etching Tank)
35. 3V LED Chaser

pc related

1. RS-232 Laser Transceiver
2. Casio data logger
3. The Simplified I-O Interface
4. The Relay Sub Board
5. The 8Way Relay Board
6. Opto-Isolated Stepper Motor Controller
7. 4 – Channel Digital Logic Analyzer and 5 Channel Digital Oscilloscope by using PC Parallel Port
8. 3-Axis Stepper Controller
9. A Worked Stepping Motor Example
10. DS1621 pc thermometer
11. Serial Cable for Casio Digital Cameras
12. VGA to TV Scart
13. Simple PC thermometer
14. DS1620 based USB Digital Thermometer
15. I-O Control Using Visual Basic
16. The Simplified I-O Interface – How it Works
17. The Simplified I-O Interface
18. PC Thermometer V2
19. Stepper motor controller
20. IrDA interface for your mainboard
21. Improved Infrared Receiver with status led
22. Build your own printer cable LCD Display
23. RJ45 Network card to IR communication
24. An Improved Infrared Receiver with Status LED
25. 8 Channel software controlled fanbus with PWM
26. A Laboratory Control System for Cold Atom Experiments

Power

1. Ni -Cd Batteries Charger
2. Basic UPS Power Supply
3. 0-30 VDC STABILIZED POWER SUPPLY WITH CURRENT CONTROL 0_002-3 A
4. Dual Regulated Power Supply
5. Fuse Monitor – Alarm
6. Regulated 12 Volt Supply
7. Variable DC Power Supply
8. LM317 VARIABLE POWER SUPPLY
9. Self-powered Fast Battery-Tester
10. AC Current Monitor
11. 6V to 12V Converter
12. Dual Polarity Power Supply
13. Fixed Voltage Power Supply
14. High Current Power Supply
15. Inverter
16. Nicad Battery Charger
17. 12 Volt 30 Amp PSU
18. LASER Power Supply
19. Portable CD Player Adapter For Car
20. Solid State Tesla Coil-High Voltage Generator
21. Transformerless Power Supply
22. Voltage Inverter
23. Voltage Inverter II
24. 5V-1A Power Supply
25. Instrument panel lamp dimmer control
26. 10 Amp 13_8 Volt Power Supply
27. 13_8V 20A power supply
28. 0-50V 2A Bench power supply
29. A simple step-up converter (6V to 12V)
30. 3-30 V-2_5 A Stabilized power supply
31. 500W low cost 12V to 220V inverter
32. TTL Power Supply with ‘Crowbar’ protection
33. Batteries charger & PSU – ideal for digital cameras
34. Pulse Charger for reviving tired Lead Acid batteries
35. Solar charger for lead-acid batteries

Remote

1. Deluxe Charge Rate Limiter for Small Capacity NiCad Batteries
2. Infrared gate 2
3. Downed Model Locator
4. Precision Receiver Battery Low Voltage Alarm
5. Multi Rocket Launcher
6. Discharger for Receiver Battery Packs
7. Receiver Battery Low Voltage Alarm
8. Infra Red Switch
9. Infrared Remote Control
10. Downed Model Locator II

rf circiut

1. 4 Watt FM Transmitter
2. TV Signal Amplifier
3. Small Radio Transmitter
4. FM Transmitter Bug
5. Electronic Eavesdropping Devices Detector
6. AM Receiver
7. Radio Shack Special
8. ZN414 Portable AM Receiver
9. 20dB VHF Amplifier
10. Linear FM 30Watt
11. AM Transmitter
12. 2 Transistor FM Voice Transmitter
13. Linear FM 50Watt with BLY90
14. 15W Fm-transmitter
15. Video Signal Amplifier
16. 3W FM Transmitter
17. CB receiver
18. CB transmitter
19. Transmitter FM 45W with valve
20. 4W FM Transmitter
21. Active FM antena
22. FM radio
23. A small FM transmitter (SMD)
24. Nostalgic Crystal Radio
25. Medium range transmitter
26. AM To FM converter
27. 60W Linear amplifier
28. AM FM Simultaneous Transmitter Using Digital IC

Robotic

1. 12-way Input-Output Interface
2. Controlling Stepper Motors with the 12way Interface

science related

1. Geomagnetic field detector
2. Infrared Detector
3. Seismic detector
4. Magnetic Gun
5. Electromagnetic field detector
6. Field-strength meter
7. Plants Watering Watcher
8. Muscular Bio-Stimulator
9. Sleeping-Aid
10. Lightning Detector
11. Magnetic-Radiation Remote-Control
12. Salt Taster
13. Air Flow Detector
14. Electronic Stethoscope
15. High Voltage Stun Gun
16. Rain Detector
17. Mini efficient coil launcher from disposable camera flash
18. Plants Watering Watcher-2
19. Electronic Stethoscope 2

scurity & sensor

1. Light switch
2. Tough switch
3. IR Remote Control Extender Circuit
4. Sound Operated Switch
5. Remote Doorbell Warning Switch
6. Frost Alarm
7. UltraSonic Radar
8. IR Remote Control Extender Circuit
9. IR transceiver 1_0
10. Digital Remote Thermometer
11. Fridge door Alarm
12. Room Noise Detector
13. Ultra-simple Voltage Probe
14. Live-line Detector
15. Capacitive Sensor
16. Emergency Light & Alarm
17. Heating System Thermostat
18. Field-strength meter
19. Mains Remote-Alert
20. Infra-red Level Detector
21. Door Alarm
22. Low Voltage Alarm
23. Light-Dark Detector
24. Touch Switch II
25. Voice activated switch
26. Metal Detector
27. Economical Pump Controller
28. 4 channel Telemetry System
29. Electronic Locker

Telephone

1. Phone line indicator
2. Phone Hold With Music
3. Soft Musical Telephone Ringer
4. Telephone amplifier
5. Telephone line monitor
6. Cut Phone Line Detector
7. FM Telephone Bug
8. Phone Busy Indicator
9. Ringing Phone Light Flasher
10. Simple Phone Tap
11. Telephone Hold Button
12. Telephone line monitor
13. The Link Telephone Intercom – Every Home Should Have One!
14. The Link A2B+1 (the Link Telephone Intercom – DTMF version)
15. The Link 4+0 – Internal Intercom
16. The Original 2 Phone Link Design
17. 8 Line Intercommunication using 89c51

Test & measurment

1. Continuity Tester
2. Latching Continuity Tester
3. IR Remote Control Tester
4. Linear Resistance Meter
5. XTal Tester
6. Capacitance Meter
7. Digital Voltmeter
8. Transistor Tester
9. Function Generator
10. Triangle – Squarewave Generator
11. Picoammeter circuit with 4 ranges – CA3420
12. Beeper to find short circuits
13. Voltage follower with 1G ohm input resistance
14. Mosfet TESTER
15. Inductive meter adapter
16. Crystal Tester
17. Oscilloscope testing module (huntron circuit)
18. Voltage Monitor
19. Logic Probe
20. Digital Radar Speedometer
21. Led display digital Voltmeter

Tube

1. Direct Coupled 15 Watt Amp
2. Dynakit Mark III 60 Watt Power Amplifier
3. Stereo Tube Amp
4. Nixie Clock
5. 25 Watt Music Amplifier
6. Push – Pull 24 Watt A Class Amplifier