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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. magvitron

    Electronic Periodic table for children. sample project

    hey I'm attaching this project of mine.. its not 100% complete (some data entry is needed that's a
    0/5, 0 votes
    Updated:
    Jan 15, 2013
  3. ()blivion

    Voltage Splitter.

    A lot of times when building circuits, (such as op-amp circuits), you'll find that you need a power
    5/5, 2 votes
    Updated:
    Jan 14, 2013
  4. ()blivion

    Stupid Simple Temperature Controlled PC box fan driver.

    Hello and welcome. Feel free to skip any sections you don't want to read. To make this circuit work
    5/5, 1 vote
    Updated:
    Jan 12, 2013
  5. ()blivion

    Extensible dummy load. 50 plus Watts per transistor.

    I TAKE ABSOLUTELY NO RESPONSIBILITY FOR ANY INJURY, DAMAGES OR UNLAWFUL CONDUCT CAUSED BY FOLLOWING
    0/5, 0 votes
    Updated:
    Jan 12, 2013
  6. Mosaic

    Integer Percentage & ASM, no FP

    This is a further discussion in the vein of 3v0's scaling article posted earlier. Percentage cal
    0/5, 0 votes
    Updated:
    Jan 5, 2013
  7. alec_t

    Mains-powered LED night-light

    I'm probably re-inventing the wheel, but here are a few variations of a mains-powered night-light f
    0/5, 0 votes
    Updated:
    Nov 9, 2012
  8. 3v0

    COOP BUILD: Breadboard Trainer/Lab/Breadboard Buddies

    This is the master index for all completed modules for this project. Please PM 3v0 if you have upl
    0/5, 0 votes
    Updated:
    Oct 13, 2012
  9. ElectroMaster

    Toy Organ

    This circuit produces a tone according to the button being pressed.
    0/5, 0 votes
    Updated:
    Sep 18, 2013
  10. carbonzit

    Real-Time 'Stopwatch'

    This is a simple electronic "stopwatch" you can use to time an event. I used it when developing a d
    0/5, 0 votes
    Updated:
    Sep 9, 2012
  11. Mikebits

    TimerBot Project

    This document presents several 555 timer circuits and there usage for a robotic obstacle avoidance
    0/5, 0 votes
    Updated:
    Sep 6, 2012
  12. BrownOut

    DVR IR Motion Trigger

    A client needed a timer to keep his DVR enabled and recording when the IR motion detector output a
    5/5, 1 vote
    Updated:
    Aug 29, 2012
  13. QuietMan

    555 Bistable Multivibrator

    The most common 555 configurations are that of a Astable and Monostable Multivibrator. This shows h
    0/5, 0 votes
    Updated:
    Aug 29, 2012
  14. bananasiong

    ADC Using 555 Timer - Delta Modulator

    With the availability of the powerful micro controller in the modern era, people tend to forget the
    5/5, 1 vote
    Updated:
    Aug 29, 2012
  15. rajbex

    Interface a character LCD display to PIC microcontroller

    [B]Introduction[/B] An HD44780 Character LCD display device is designed for interfacing with embed
    4/5, 1 vote
    Updated:
    Jul 31, 2012
  16. rs14smith

    Solar Charged Remote Control Electric Lawn Mower

    I, Robert Steve Smith, have put together a series of videos below that will show you how to create
    5/5, 2 votes
    Updated:
    May 25, 2012
  17. alec_t

    Simple, cheap, Square/Triangle/Sine-wave generator

    A test signal generator is invaluable when making or repairing electronic equipment. Although a ful
    4/5, 1 vote
    Updated:
    May 25, 2012
  18. carbonzit

    Inductance measuring adapter for multimeter

    For those of us without an actual inductance meter, this project is an easy-to-build way to use an
    4/5, 2 votes
    Updated:
    May 25, 2012
  19. 3lectrix

    Water Level Alarm

    This circuit will produce an audible alarm when the water level reaches a preset level.The circuit
    5/5, 1 vote
    Updated:
    Dec 29, 2011
  20. 3lectrix

    Power Supply Failure Alarm

    Most of the power supply failure indicator circuits need a separate power supply for themselves. Bu
    3/5, 2 votes
    Updated:
    Dec 29, 2011
  21. andrewblog

    Momentary latching relay

    Just for fun I designed and built this simple circuit which drives a monostable relay by a singol m
    0/5, 0 votes
    Updated:
    Mar 18, 2017