Tagged: 555 circuit

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Door opening alarm circuit diagram

A door opening alarm circuit is an indicator or a security alert device which activates while opening the device attached door. And the alarm remains ON as long as the door is kept open....

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Simple touch switch circuit using transistor, 4017, 555 IC

A touch switch circuit operates with a touch action of an object or sensible material. It is used in hobby devices to high end consumer electronics for various applications. Touch switch circuit using transistor The...

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Audio Tone generator circuit using 555, 741 IC

A tone generator circuit can be used for various applications such as alarms, bells, indicators, etc. A tone generator consists of a square, triangle, saw tooth periodic wave generator circuits, commonly square wave generators. Such periodic...

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Automatic Light Control Circuit diagram using LDR

These circuits can be used for different automatic light sensing projects including automatic night lamp, automatic street light controller, dark sensor circuits, etc. Automatic night lamp circuit using IC 555 An automatic night light circuit...

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Brake light flasher circuit

Simple flashing brake light The circuit can use to make a simple pulsating stop brake light which continuously flashes as long as the brake is applied. Here we are using a 555 astable multivibrator...

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Infrared burglar alarm using IC 555 circuit diagram

This infrared burglar alarm can use at doors, entries, etc. To alerts us, when somebody crosses through the IR beam. As the IR beams are invisible to human eyes, the circuit can work as a hidden security device. To...

LED flasher circuit diagram using 555 timer ic 0

LED flasher circuit diagram using 555 timer ic

An LED flasher circuit can be used as an LED blinker, vehicle indicator light, signal flashlight, etc. A simple blinking circuit is basically a circuit to continuously ON and OFF the light supply on...