When you first clamp your hands, mic detects the sound and triggers the 555 timer via the operational amplifier. The timer stretches the signal and applies it to the clock input of the flip-flop.

This is a very simple touch sensor switch that is build with the 555 timer IC. You just need to touch the metal plate and the relay gets energised and is kept in this state for about 100 seconds, then ...

A digital switch is useful when you need to automate electrical appliances like your AC, geyser, water pump, irrigation pump, sauna, charging for solar inverter, and the like. It helps you handle ...

When you want to make your lights smarter without changing the bulbs, you’re likely looking at upgrading to a smart light switch. One of the more vital functions of a smart switch is its ability to ...

The history of the 555 timer. What are the 555's modes of operation? About my book to help teach those young and old about 555 timers. element14’s 555 timer contest. The 555 timer celebrated the 51st ...