555 Timer Circuits

555 Timer IC is one of the commonly used IC among students and hobbyists. There are a lot of applications of this IC, mostly used as vibrators like, ASTABLE MULTIVIBRATOR, MONOSTABLE MULTIVIBRATOR and BISTABLE MULTIVIBRATOR. You can find here some interesting circuits based on 555 Timer IC by using these different operating modes.

 

1 Minute Timer Circuit

As the name suggest 555 timer is basically a “Timer”, which create an oscillating pulse. It means for some time output pin 3 is...

Clap Switch

Clap switch is an interesting hobby circuit which turns on the lights with a clap sound. Although its name is “Clap switch”,...

Rain Alarm

Rain alarm is an application which detects the rain water and blows alarm. They are useful devices and play an important role...

Fire Alarm using Thermistor

Fire alarms are prime necessities in modern buildings and architectures, especially in banks, data centers and gas stations....

Negative Voltage Generator

In electronics applications sometimes we need negative voltage. However getting a negative supply source is not a reliable...

Door Bell using IC 555

Doorbell is a very common and useful device used in every household. Among electronics students and hobbyists, doorbell circuit...

Flashing Police Lights Circuit

In this project we are going to design a circuit, to make a flashing light similar to that on a police car. This police light...

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