555 Timer

A continuity tester is a device which tests the continuity of the wire at hand. It is an indispensable tool to check broken wires and

While parking the car the driver should be more careful because he cannot see the back of the car while parking or taking reverse, if

We all have a doorbell at our homes. When a visitor comes to our house, he searches for the doorbell switch and then rings it

Air flow detection is often necessary in many applications or systems where it is necessary to detect the presence of air to have a descriptive

Mosquito repellents like coils, mats, liquid vaporisers, creams are often used at various places. However they are prone to be fatal and can cause harm

Infrared (IR) communication is a very common wireless communication technology. IR communication is an easy to use and inexpensive wireless communication. IR Communication generally comprises

The circuit presented here is used to change the tune/melody into a different pitch level by devoid of loss in the tune. The characteristics of