multipurpose FM transmitter circuit

Simple multipurpose FM transmitter circuit designed by using two NPN transistors and few easily available components.…

LM35 Temperature Indicator LED circuit

Temperature sensing or monitoring and control is the important process in industries and some temperature specific…

Heat Sensor Circuit

Simple heat sensor circuit designed to give alert sound when the temperature reaches the desired threshold,…

Volume Level Indicator Using Transistor

Volume Level Indicator using transistor circuit can be used as a simple VU meter, It can…

PIR Motion Detector Circuit

Passive Infra Red motion sensor mostly used in security based designs, and due to its robust…

Sound Generator Circuit Using IC HK620

We take lot of effort to add sound output in electronic design, Here the simple Sound Generator…

Audio Amplifier-Low power

Simple two stage resistor capacitor coupled low power audio amplifier using npn transistor BC547 designed, This…