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Electronic Circuits

A collection of electronic circuits and projects you can build. Created by our very own members.

Top Articles

  1. Refrigerator Timer magvitron
    A timer for turning ON/OFF the refridgerator at peak load hours (6pm to 10 pm) using 8051
  2. I'm sick of counter requests.. So here's a few Ian Rogers
    counter
  3. LM317 Adjustable 20V, 1.5A Supply with Simple SMPS Tracking Preregulator crutschow
    LM317 supply with switching tracking prereg for good efficiency and minimal heat sink requirements.
  4. Power Analysers: True RMS Readings Barry Atkins
    What is true RMS or why does that matter?
  5. Alcohol detector and engine cut off. magvitron
    in order to start the car you have to blow to the sensor having a flowsensor (can be madeform a hea
  6. "The Scavenger" A Joule Thief inspired Boost regulator. ()blivion
    Presented here is a significant step forward in simple, cheep, and efficient boost converter design
  7. Monitor I2C Communications through RS232 languer
    In the past when requiring to monitor I2C communications between two devices I
  1. Articles are being shown from all child categories.
  2. Someone Electro

    Simple Coil Gun

    What is an coil gun? Its an prety fancy way of shoting projectiles out of an tube.It uses magnetic
    0/5, 0 votes
    Updated:
    Jul 5, 2010
  3. ElectroMaster

    Miniature Loop Alarm

    A few months ago, I decided to build a compact, yet effective alarm. My demands were:- simple const
    0/5, 0 votes
    Updated:
    Jul 5, 2010
  4. RODALCO

    240 Volts 100 Hertz 29 LED lamp

    This is the improved version of the LED lamp posted about 1 year ago which ran on half wave rectifi
    0/5, 0 votes
    Updated:
    Jul 5, 2010
  5. chemelec

    Vehicle Loop Detector

    I Just Updated my Car Detector project, Should anyone here need one.
    0/5, 0 votes
    Updated:
    Jul 5, 2010
  6. Gayan Soyza

    Flashing a LED with Mouse

    Don’t throw your old mouse do a fun project with it. This is the simplest project I have ever mad
    0/5, 0 votes
    Updated:
    Jul 5, 2010
  7. ElectroMaster

    Triac light bulb flasher

    This 800 W light bulb flasher operates directly off the line and needs no transformer. Power for th
    0/5, 0 votes
    Updated:
    Jul 5, 2010
  8. Rolf

    Digital slave flash trigger

    This unique circuit has been tried with all three of my cameras and two others and works perfectly.
    0/5, 0 votes
    Updated:
    Jul 5, 2010
  9. Tom McCurdy

    7-Segment LED Counter (binary and base 10)

    Here is something that I was able to build, it basically takes the pulse from a 555 timer and goes
    0/5, 0 votes
    Updated:
    Jul 5, 2010
  10. mechie

    Stabilised Power Supply with Current Limiting

    A simple bench PSU capable of :- Approx. 5v to 15v output at 1A Current limited from about 500mA
    0/5, 0 votes
    Updated:
    Jul 5, 2010
  11. ElectroMaster

    Garage Door Hacker

    This is the instructions and schematic for a garage door hacker. It modifies an existing door opene
    0/5, 0 votes
    Updated:
    Jul 5, 2010
  12. zachtheterrible

    Laser or IR beam alarm system

    This is a cool little circuit that i made for a school project. It can be used as one of those thin
    0/5, 0 votes
    Updated:
    Jul 5, 2010
  13. hsab

    Fluoro Lamp Power Inverter (12v)

    hi for all members. [ATTACH]44249[/ATTACH]
    0/5, 0 votes
    Updated:
    Jul 5, 2010
  14. Hero999

    PIC Programmer.

    I've just finished building the PIC programmer on Nigel's site.
    0/5, 0 votes
    Updated:
    Jul 2, 2010
  15. Exo

    PIC18F870 controlled fanbus

    This PIC controlled fanbus allows to control the speed of 6 fans with PWM. It uses 4 7segment led
    0/5, 0 votes
    Updated:
    Jul 2, 2010
  16. JBrock

    HDD Latch Update for Manual Fan Control

    This update applies to a project posted [URL="http://www.electro-tech-online.com/electronic-project
    0/5, 0 votes
    Updated:
    Jul 2, 2010
  17. JBrock

    5W voltage-controller LED Current Driver

    Here is a voltage-controlled LED current driver for those who are not afraid to burn some POWER! Fo
    0/5, 0 votes
    Updated:
    Jan 4, 2010
  18. MrDEB

    Motorcycle turn signal canceler

    here is a simple motorcycle turn signal canceler circuit that I have been working on. The circuit s
    0/5, 0 votes
    Updated:
    Jan 4, 2010
  19. JBrock

    Power-Up Latching Relay

    [SIZE="3"][FONT="Verdana"]The purpose of the circuit is to create a switch which cannot change posi
    0/5, 0 votes
    Updated:
    Jan 4, 2010
  20. bananasiong

    BSP (BlackjackStation Portable)

    Hi all, This is the group project that we've been spending 3 months to work out (Oct '07 to Dec '0
    0/5, 0 votes
    Updated:
    Jan 4, 2010
  21. tonigau

    Traila Brake Controller

    Here's a controller for 12V electric traila brakes. I made this up back in 2003 when I built my 20
    0/5, 0 votes
    Updated:
    Jan 4, 2010