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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

    Refrigerator Timer

    A timer for turning ON/OFF the refridgerator at peak load hours (6pm to 10 pm) using 8051
    4.5/5, 2 votes
    Updated:
    Sep 29, 2013
  3. Ian Rogers
    5/5, 1 vote
    Updated:
    Dec 1, 2016
  4. crutschow

    LM317 Adjustable 20V, 1.5A Supply with Simple SMPS Tracking Preregulator

    LM317 supply with switching tracking prereg for good efficiency and minimal heat sink requirements.
    5/5, 1 vote
    Updated:
    Apr 14, 2015
  5. Barry Atkins

    Power Analysers: True RMS Readings

    What is true RMS or why does that matter?
    5/5, 1 vote
    Updated:
    Nov 8, 2013
  6. magvitron

    Alcohol detector and engine cut off.

    in order to start the car you have to blow to the sensor having a flowsensor (can be madeform a hea
    5/5, 1 vote
    Updated:
    Jun 29, 2013
  7. ()blivion

    "The Scavenger" A Joule Thief inspired Boost regulator.

    Presented here is a significant step forward in simple, cheep, and efficient boost converter design
    5/5, 1 vote
    Updated:
    Jun 19, 2013
  8. languer

    Monitor I2C Communications through RS232

    In the past when requiring to monitor I2C communications between two devices I
    5/5, 1 vote
    Updated:
    Feb 10, 2013
  9. Ian Rogers
    5/5, 1 vote
    Updated:
    Apr 17, 2015
  10. DerStrom8

    The Secret Knock Detector Project

    [B]Introduction and Overview[/B] The Secret Knock Detector project is a variation of Steve
    5/5, 1 vote
    Updated:
    Jan 17, 2013
  11. ronv

    Swinear Power Supply

    Higher power linear regulator
    4/5, 1 vote
    Updated:
    Jan 16, 2014
  12. crutschow

    Simple & Inexpensive Ideal-Diode MOSFET Circuit

    Good for low-drop diode applications, such as blocking battery back-charging or brownout protection
    4/5, 1 vote
    Updated:
    Sep 19, 2017
  13. Ian Rogers
    0/5, 0 votes
    Updated:
    Jul 30, 2017
  14. crutschow

    Push-Button Relay Latch Circuit With Simple Debounce

    PB alternate action circuit uses CD4013 FF with simple debounce to control relay (or other load).
    0/5, 0 votes
    Updated:
    Jun 20, 2017
  15. crutschow

    LM317 CC/CV 12V Lead-Acid Battery Charger With Automatic Trickle Charge

    Lead-acid battery charger starts with constant-current and ends with constant-voltage trickle charge
    0/5, 0 votes
    Updated:
    Jun 18, 2017
  16. crutschow

    Resonant Inductive Charging of Capacitor Improves Efficiency And Amount of Stored Energy

    Capacitor resonant charging can nearly double the charge efficiency and quadruple energy stored.
    0/5, 0 votes
    Updated:
    May 30, 2017
  17. crutschow

    Analog Max / Min Value or Bi-Level Clamp Circuits

    Circuit outputs the min. or max. value of several analog inputs, or provides accurate bi-level clamp
    0/5, 0 votes
    Updated:
    May 2, 2017
  18. crutschow

    Missing Pulse Detector Circuits Using LM339/393 Comparator or CD4049 Gate

    Watchdog timer circuits, alternate to 555 designs, will timeout on either high or low hang
    0/5, 0 votes
    Updated:
    Apr 15, 2017
  19. crutschow

    Triple Output Tracking Power Supply Uses Standard 3-Terminal Regulators, Adjusts to Zero Out

    Single +output plus dual +/- tracking output supply using common 3-terminal regulators goes to 0V.
    0/5, 0 votes
    Updated:
    Mar 9, 2017
  20. crutschow

    Efficient MOSFET Bridge Rectifier for Resistive Loads, Or Input Power Auto Polarity Gating

    MOSFET bridge for efficient resistive load rectification, or indifference to input power polarity.
    0/5, 0 votes
    Updated:
    Mar 8, 2017
  21. crutschow

    PWM Voltage Control Of Standard Linear IC Regulators

    PWM allows easy control of linear regulator output voltage for μP based power supplies
    0/5, 0 votes
    Updated:
    Feb 14, 2017