This is small and simple MIC preamplifier circuit using op-amp IC LM358 and it uses op-amp to make weak sound from MIC more strong, so it boosts low audio signal into stronger one. Also, the circuit is good to record voice or connect to speaker and it is easy to make with not many parts. […]
Audio Circuits
TV, Video Transmitter Circuit
This is one TV, Video Transmitter Circuit and it can send video from DVD, camera or other device to old TV in our house. We do not need big parts or hard things, just small circuit and little care is all we need, so this type of circuit is good for fun and also for […]
FM Transmitter Circuit (100 meters range)
Do anyone want to try make its own small radio station?, then this post can help, this post show how to build a easy and FM Transmitter Circuit (100 meters range) which works between 87.5 to 108 MHz on FM radio. Transmitter uses simple circuit with special transistor and antenna to send our signal, but […]
IC 555 Amplifier Circuit
The IC 555 chip is very useful in many electronic works, but this project is not same like normal timing circuits. Here, we are making IC 555 Amplifier Circuit which uses microphone. At first, microphone take the sound and then one small transistor give little power to sound like small switch. At last, IC 555 […]
Clap Switch Circuit
Clap Switch Circuit using 555 IC and Relay is small and easy project, which uses sound like clap to turn ON and OFF the 220V AC things like fan, light etc. Moreover, in this post we can help to make each part of clap switch circuit by using 555 timer IC and one with relay. […]
Chirping Bird Sound Generator Circuit
To begin with, Chirping Bird Sound Generator Circuit is simple electronic project which make sound like real bird chirping. Moreover, it use basic parts like transistors, capacitors, resistors audio transformer to make natural bird type sound. In addition, we can use this circuit in toys, doorbells and decoration items to make them more interesting and […]