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  • 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.

Electronic Projects

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

Categories

  1. Electronic Projects 76
    1. Alarms 1
    2. Audio 0
    3. Automotive 3
    4. Computers 0
    5. High Voltage 0
    6. Light/Laser 1
    7. Microcontrollers 10
    8. Power Supply 24
    9. Remote Control 4
    10. Robotic 2
    11. Test Equipment 6
    12. Timers 1
    13. Other 22
  2. Electronic Theory 2
    1. Laws 0
    2. Guides 0
    3. Other 2
  3. Software & Downloads 0
    1. Hello World! Examples 0
  4. Code Repository 0

Top resources

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Resource icon unclejed613
output impedance experiments 2018-07-10
Damping factor, and how an amplifier controls voice coil motion.
0.00 star(s) 0 ratings
Updated
Resource icon crutschow
Notch Filter Allows Single Pot Adjustment of Notch Frequency With Little Change In Its High Q Value 2018-06-01
Notch filter Q is largely independent of component tolerances and notch frequency adjustment.
0.00 star(s) 0 ratings
Updated
Resource icon crutschow
Battery - Accurate, Low-Voltage Cutoff To Prevent Complete Battery Discharge 2018-05-29
Circuit disconnects battery from operating accessories at a specific voltage to avoid dead battery.
5.00 star(s) 1 ratings
Updated
Resource icon languer
Low Cost Alternative USB-to-GPIB Controller 2018-05-12
USB-to-GPIB Controller
0.00 star(s) 0 ratings
Updated
Resource icon languer
Achieving Low Power on Adafruit Trinket 2018-05-12
Low Power on Trinket MCU
0.00 star(s) 0 ratings
Updated
Resource icon crutschow
Lead-Acid Battery Charger, 12V 6A, Using Hysteretic SMPS Circuit With Auto Float-Charge 2018-04-09
Simple, efficient, lead-acid battery charger auto switches from CC to CV mode
0.00 star(s) 0 ratings
Updated
Resource icon crutschow
555 One-Shot Timer Has Zero Quiescent Power 2018-04-17
One-shot timer uses no power when quiescent, useful for battery powered circuits
0.00 star(s) 0 ratings
Updated
Resource icon crutschow
Power Saving DC Solenoid Driver Provides Initial Full Power Actuation Followed By PWM Hold 2018-03-31
Circuit applies full actuation power to solenoid with PWM hold reducing power to 12-25% of nominal
0.00 star(s) 0 ratings
Updated
Resource icon crutschow
Low-Dropout CC/CV 12V Lead-Acid Battery Charger With Auto Trickle-Charge 2018-03-11
Minimal circuit for auto CC/CV charging. Option allows pot adjustment of charge current.
0.00 star(s) 0 ratings
Updated
Resource icon crutschow
Low Drop, High-Side Sense Current Limiter Adjusts to Zero 2018-03-08
Two simple high-side sense current limit circuits adjust to zero current and have low voltage drop
0.00 star(s) 0 ratings
Updated
Resource icon crutschow
Binary ↔ BCD Conversion Using Counters 2018-02-23
Combination of Binary & BCD counters do Binary↔BCD conversions.
0.00 star(s) 0 ratings
Updated
Resource icon crutschow
Simple 15V, 1.5A, CC/CV Bench Power Supply Circuit - (With Optional Laptop Charger Source) 2018-02-05
Inexpensive, single regulator IC power supply with I and V adj. to zero, includes I & T monitors
5.00 star(s) 1 ratings
Updated
Resource icon crutschow
Simple & Inexpensive Ideal-Diode MOSFET Circuits 2017-09-19
Good for low-drop diode applications, such as blocking battery back-charging or brownout protection
4.67 star(s) 3 ratings
Updated
Resource icon Ian Rogers
Sound / Frequency on a micro 2017-07-30
Sound
5.00 star(s) 1 ratings
Updated
Resource icon crutschow
Push-Button Relay Latch Circuit With Simple Debounce 2017-06-20
PB alternate action circuit uses CD4013 FF with simple debounce to control relay (or other load).
0.00 star(s) 0 ratings
Updated
Resource icon crutschow
LM317 CC/CV 12V Lead-Acid Battery Charger With Automatic Trickle Charge 2017-06-18
Lead-acid battery charger starts with constant-current and ends with constant-voltage trickle charge
0.00 star(s) 0 ratings
Updated
Resource icon crutschow
Resonant Inductive Charging of Capacitor Improves Efficiency And Amount of Stored Energy 2017-05-30
Capacitor resonant charging can nearly double the charge efficiency and quadruple energy stored.
5.00 star(s) 1 ratings
Updated
Resource icon crutschow
Analog Max/Min Value or Bi-Level Clamp Circuits 2017-05-01
Circuit outputs the min. or max. value of several analog inputs, or provides accurate bi-level clamp
5.00 star(s) 1 ratings
Updated
Resource icon crutschow
Missing Pulse Detector (Watchdog Timer) Circuits Using LM339/393, CD4093, or 555 2017-04-15
Watchdog timer circuits, will timeout on either high or low hang
0.00 star(s) 0 ratings
Updated
Resource icon A
Momentary latching relay 2011-12-29
Just for fun I designed and built this simple circuit which drives a monostable relay by a singol m
0.00 star(s) 0 ratings
Updated

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