Electronic circuits,circuit diagrams,Free circuit

Electronic circuits,circuit diagrams,Free circuit

Alarms / Indicators
Audio
Battery charger
Cars / Motorcycles
Computer / PC Hardware
Digital Circuit
Fun Circuits
Generators
Home/Garden
Inverter / Converter Circuit
Lights & LED
Microcontrollers
Motor
Music
Oscillators
Other Circuit
Power Supply
Radio
Remote Controls
Robotics
Sensors
Telephones
Test / Measurement
Timer / IC 555 Circuit
Total Circuit

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

Ten Turn Pot Forms Frequency Readout


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		LONG PERIOD COMPUTER WATCH DOG TIMER	View 39
		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	View 79
		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	View 25
		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	View 32
		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	View 50
		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	View 63
		Often a simple mechanical bell is used by a customer at a store or hotel lobby... [ Category Alarms / Indicators ]

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Check Engine Beeper [View 59 | Post 0] [ Category Other Circuit]

BASEMENT DOORBELL BEEPER [View 39 | Post 0] [ Category Alarms / Indicators]

ANOTHER VERY LOUD PIEZO ALARM BEEPER [View 42 | Post 0] [ Category Alarms / Indicators]

24V DC Powered Beeper with 4 Separate Inputs [View 50 | Post 0] [ Category Power Supply]

Transistor Organ [View 60 | Post 0] [ Category Fun Circuits]

Audio Oscillators [View 48 | Post 0] [ Category Oscillators]

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