electronic & microcontroller

• VU Meter
• Gauss Meter
• Rainbow LED Voltmeter
• Precision Peak Detector
• Capacitance Meter
• Digital PC Oscilloscope
• Three Channel Spectrum Analyzer
• Audible Circuit Tracer
• Gravimeter
• LoPIC Logic Probe with Pulser
• Four Channel Digital Storage Enhancement for an Oscilloscope
• Lightning Detector
• Simple pH Meter
• 16-bit A/D Converter w/ RS232 Interface
• Wireless Weather Monitoring Station
• Isolated, 12bit, 8 Channel, A/D Converter with PC Interface and 0.1% Accuracy
• Inductance Meter
• Time Domain Reflectometer
• Frequency Counter
• Reflectometer

• AC Powered NiCAD Battery Charger
• Intelligent NiMh/NiCad Charger

• Sweet, Tube - Based Amplifier
• Pocket Amplifier
• 45 Watt Single Chip Amplifier with Tone Controls
• Low Noise Variable Gain Amplifier
• 1GHhz Transimpedance Amplifier(new)

1.   Gyrator Circuit

  2.   L200 PSU

  3.   12 Volt 30amp Supply

  4.   Regulated 12 Supply

  5.   Fuse Blown Indicator

  6.   Unregulated Power Supply

  7.   Dual Regulated Power Supply

  8.   Boosting Regulator Current

  9.   Logic PSU with Over Voltage Protection

  10.  Nicad Battery Charger

  11.  PIC Nicad Battery Charger

  12.  Variable Power Supply

  13.  Transformerless Power Supply

  14.  Universal DC-DC Convertor

  15.  Variable Regulator Output

  16.  LM317 Regulator Circuit

  17.  Basic UPS

  18.  Over Voltage Protection for LM317

  19.  Alarm PSU
  20.  An Output Adjustable Flyback Converter

  21.  A 13.8V 20A PSU

  22.  A 9V 2A PSU

  23.  Current Limiting Power Supply

  24.  Supply Voltage Indicator

  25.  Small Variable Power Supply

  26.  Soft Start power Supply

  27.  Universal PSU

1.   Electronic Canary

  2.   Metronome Circuit

  3.   Sound Effects Generator

  4.   Sound Effects Generator 2

  5.   Electronic Siren

1.   Zener Diode Tester

  2.   Infra Red Remote Control Tester

  3.   Electromagnetic Field Probe with Meter

  4.   Simple Square Wave Oscillator

  5.   Logic Probe

  6.   Function Generator

  7.   MilliGauss Meter

  8.   Multi Wire Cable Tester

  9.   Connection Tester

  10.  Sine Wave Generator

  11.  Two Crystal Test Circuits

  12.  Bench Amplifier

  1.   Gate Alarm Circuit  

  2.   5 Zone Alarm system

  3.   Miniature Loop Alarm

  4.   Modular Burglar Alarm

  5.   Water Activated Alarm

  6.   Buzzer

  7.   Radio Wave Alarm

  8.   Enhanced Alarm Keypad

  9.   4 Digit Keypad

  10.  Motorcycle Alarm

  11.  Water Level Alarm

  12.  Single Zone Alarm

  13.  CMOS Single Zone Alarm

  14.  Mini Alarms  

  15.  Car Alarm and Immobilizer

  16.  Hijack Alarm  

  17.  Snore Alarm

  18.  Motorcyle Alarm 2

  19.  Motorcycle Alarm 3

 1.   Conjuring Trick

  2.   Static Electricity / Negative Ion Detector

  3.   Perimeter Monitor

  4.   Lightening Detector by Charles Wenzel ( External Link )

  5.   Temperature Monitor

  6.   Hot Water Tank Indicator

  7.   Electromagnetic Field Detector

  8.   Neon Desklamp

  9.   Magic Wand

  10. Speaker Microphone Circuit

  11. Magnetic Gun

  12. Insect Repellant

  13. LED Torch

  14. Quiz Circuit

  15. Ultrasonic Dog Whistle

  16. Pot Plant Power

  17. Combinational Conjuring Trick

  18. Metal Detector

  19. High Quality Intercom

  20. Doorbell for the Deaf

  21. Laser Communication System

  22. IR Link

  23. A Decimal to BCD convertor

  24. Audio Indicator

  25. Radar Detector

  26. Monitor Splitter

  27. LED Torch

  28. LED Flasher