Electronic circuits,circuit diagrams,Free circuit

Electronic circuit

Electronic circuits,circuit diagrams,Free circuit

 

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This site contains lots of FREE electronic circuits ircuit diagrams for hobbyists, students, professionals etc. covering a wide range of categories in electronics like audio, music,home/garden related,computer hardware,radio,robotics etc to name a few. There are also links to sites that offer hobby electronic kits and other electronics hobby related stuff. Use the menu on the left to browse different circuit categories. You can view the entire electronic circuit schematics index by click here.

Last Update Circuit

Simple Security Wire Loop Alarm Circuit
Simple Security Wire Loop Alarm Circuit
Ten Turn Pot Forms Frequency Readout
Ten Turn Pot Forms Frequency Readout
 
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LONG PERIOD COMPUTER WATCH DOG TIMER   LONG PERIOD COMPUTER WATCH DOG TIMER View 282
This circuit uses a simple 4060 IC oscillator/timer that is reset periodically by a computer.

[ Category Computer / PC Hardware ]		  
 
AC Powered White LED Strings   AC Powered White LED Strings View 655
A while back a guy by the name of Ken Schultz sent me a simple drawing of how he connected a string of 30 LEDs...
[ Category Lights & LED ]		  
 
Ultra Low Power 32KHz Crystal Oscillator   Ultra Low Power 32KHz Crystal Oscillator View 221
I have used this circuit many times when I needed a low frequency reference, which did not draw much power.
[ Category Oscillators ]		  
 
40KHz Voltage to Frequency Converter   40KHz Voltage to Frequency Converter View 300
This circuit was designed to frequency modulate a 40KHz carrier, using human voice frequencies. A common flip/flop is used at the core of the circuit.
[ Category Inverter / Converter Circuit ]		  
 
High Power LED Flasher   High Power LED Flasher View 463
Power LEDs are becoming more popular these days. The DC input power to these devices ranges from 1 watt to 5 watts.
[ Category Lights & LED ]		  
 
Front Desk Service Beeper Circuit   Front Desk Service Beeper Circuit View 270
Often a simple mechanical bell is used by a customer at a store or hotel lobby...
[ Category Alarms / Indicators ]		  

NEW Circuit

Check Engine Beeper [View 174 | Post 0] [ Category Other Circuit]

BASEMENT DOORBELL BEEPER [View 162 | Post 0] [ Category Alarms / Indicators]

ANOTHER VERY LOUD PIEZO ALARM BEEPER [View 172 | Post 0] [ Category Alarms / Indicators]

24V DC Powered Beeper with 4 Separate Inputs [View 181 | Post 0] [ Category Power Supply]

Transistor Organ [View 205 | Post 0] [ Category Fun Circuits]

Audio Oscillators [View 160 | Post 0] [ Category Oscillators]
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