The Clapper™ is a miracle of the 1980s, turning lights and TVs on and off with the simple clap of the ... inside a Clapper is a microphone. [Rafale] is using a small electret microphone ...

Electret microphones are capable of high-quality ... meaning it’s perfect for running off phantom power. This means the microphone needs no batteries, and using a dual op-amp enables the circuit ...