1. Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
    Dismiss Notice

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. Val Gretchev

    Constant Current Supply for High Power LEDs

    A high efficiency constant current supply based on a switching regulator.
    0/5, 0 votes
    Updated:
    Jan 11, 2014
  3. kinarfi

    Power Supply + & - 20v 15+ amps

    Power supply using LM2576 & LT1270A
    0/5, 0 votes
    Updated:
    Jan 11, 2014
  4. kinarfi

    FORWARD & REVERSE, VARIABLE SPEED MOTOR CONTROLLER

    FORWARD & REVERSE, VARIABLE SPEED MOTOR CONTROLLER WITH POTENTIOMETER
    0/5, 0 votes
    Updated:
    Jan 11, 2014
  5. magvitron

    Forward / Reverse motor controller using 8051

    Used in an automatic car jack using an IR remote control, (the fwd and bwd turn will lift/lower )
    0/5, 0 votes
    Updated:
    Sep 29, 2013
  6. alec_t

    PWM pulse generator

    This is the base design (not a full working drawing with pin-numbering etc) for a simple PWM pulse
    0/5, 0 votes
    Updated:
    Sep 3, 2013
  7. 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
  8. alec_t

    Simple PWM control

    Here's a simple PWM control circuit using inexpensive readily-available components. [ATTACH=CONFI
    0/5, 0 votes
    Updated:
    Apr 24, 2015
  9. ElectroMaster

    Toy Organ

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

    Fan Control Circuit (LM317)

    This is an illustrated tutorial on building a variable voltage control for fans and other units, ba
    5/5, 1 vote
    Updated:
    May 19, 2013
  11. jakeselectronics

    Binary to 7 Segment Decoder

    This circuit displays the Hexadecimal equivalent of a 4 bit Binary Number. The number is displayed
    4.5/5, 2 votes
    Updated:
    Apr 25, 2013
  12. languer

    Simple Serial LCD

    Creating a serial LCD can be very useful for quick debugging; as well as projects requiring LCD sup
    4/5, 1 vote
    Updated:
    Apr 8, 2013
  13. richard.c

    PH Amplifier

    There are many micro circuits for aquarium temperature controllers - one of the more desirable fea
    4.5/5, 2 votes
    Updated:
    Mar 25, 2013
  14. alec_t

    Brushless DC Motor Speed Controller

    A simple, cheap, BLDC motor controller using readily-available components is described. Most previ
    5/5, 2 votes
    Updated:
    Feb 14, 2013
  15. rajbex

    Adding thermometer feature to an inexpensive digital multimeter

    Digital multi-meters are found dirt cheap on Ebay. For less than five bucks, you can buy a multi-fu
    5/5, 1 vote
    Updated:
    Jan 28, 2013
  16. magvitron

    matlab code for detecting and following a red ball.

    the code is self explanatory [CODE]clear; clc % Clearing Matlab desktop vid=videoinput('winvide
    0/5, 0 votes
    Updated:
    Jan 25, 2013
  17. magvitron

    avr based frequency meter with full code and design file

    its a frequency meter. designed using atmega 8 (avr studio and avr gcc) proteus file : [ATTACH]
    0/5, 0 votes
    Updated:
    Jan 25, 2013
  18. magvitron

    Automatic Street Lighting System

    The driving theme behind the Automatic Street Lighting System is an energy-saving streetlight schem
    5/5, 1 vote
    Updated:
    Jan 24, 2013
  19. 3v0

    Scaling Numbers or how avoid floating point.

    Part I: The voltage divider. Because eight bit mircocontrollers lack floating point instruction
    5/5, 2 votes
    Updated:
    Jan 19, 2013
  20. ()blivion

    Easy DIY "Wiimote" Light bar

    [B]*DISCLAIMER* THIS PROJECT WORKED 100% FOR ME, I HOPE IT WORKS FOR YOU TOO. BUT I CAN NOT SUPERVI
    0/5, 0 votes
    Updated:
    Jan 17, 2013
  21. DerStrom8

    The Secret Knock Detector Project

    [B]Introduction and Overview[/B] The Secret Knock Detector project is a variation of Steve
    0/5, 0 votes
    Updated:
    Jan 17, 2013