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
  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. 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
    Apr 15, 2017
  3. 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
    Mar 18, 2017
  4. 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
    Mar 9, 2017
  5. 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
    Mar 8, 2017
  6. crutschow

    Reverse Current Battery Protection With MOSFET Ideal Diode

    Low voltage-drop, reverse current protection for battery when connecting adapter power
    0/5, 0 votes
    Mar 7, 2017
  7. 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
    Feb 14, 2017
  8. crutschow

    Low Power CMOS PWM Circuit With Buffer Output Requires Only 5 Components

    CD4093 PWM circuit uses only 2 diodes, 1 capacitor, and 1 potentiometer
    0/5, 0 votes
    Feb 9, 2017
  9. crutschow

    Single Supply Non-Inverting Av=1 Op Amp Circuit With Simple Offset Voltage Calculation

    Circuit generates Av=+1 with simple offset calculation using std. resistor values
    0/5, 0 votes
    Feb 8, 2017
  10. crutschow
    0/5, 0 votes
    Jan 30, 2017
  11. crutschow

    Simple, Efficient, Inexpensive, High-Power LED Constant-Current Switching Supply

    Constant-current hysteretic buck regulator supply for high power LEDs, efficiency of 90%
    0/5, 0 votes
    Jan 25, 2017
  12. crutschow

    MOSFET Bridge Rectifier With Low Forward Drop, Works With Capacitive Output

    MOSFET Bridge Rectifier gives high efficiency for low voltage, high current AC-DC supplies
    0/5, 0 votes
    Jan 17, 2017
  13. spec


    Linear power supply core theory plus circuits that can be adapted to suit your application
    0/5, 0 votes
    Jan 10, 2017
  14. crutschow

    Isolated Input, MOSFET AC/DC Solid State Relay (SSR)

    Solid-state discrete AC/DC relay uses MOSFETs for low on-voltage with opto-isolated control input
    0/5, 0 votes
    Jan 3, 2017
  15. Mikebits
    0/5, 0 votes
    Jan 1, 2017
  16. Ian Rogers
    5/5, 1 vote
    Dec 1, 2016
  17. spec

    Core Equipment

    What equipment do you need to get started in electronics
    0/5, 0 votes
    Nov 26, 2016
  18. spec

    Precision Micropower Battery Cut-off Circuit

    Simple micropowr circuit to protect batteries from under voltage
    0/5, 0 votes
    Nov 23, 2016
  19. spec

    Standard Three Terminal Regulator Adjusts Down to Zero Volts

    A simple circuit to get down to zero volts with a standard three terminal regulator
    0/5, 0 votes
    Nov 20, 2016
  20. crutschow

    Bipolar AC/DC MOSFET Low-Side Switch

    AC/DC Low-Side Switch With Low ON Resistance Uses Two N-MOSFETs and One NPN Transistor
    0/5, 0 votes
    Nov 7, 2016
  21. spec

    Core Components

    Which components do you need to get started in electronics?
    0/5, 0 votes
    Nov 1, 2016