Simple multipurpose FM transmitter circuit designed by using two NPN transistors and few easily available components.…
Tag: bc547
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…