This audio amplifier circuit is useful in classrooms to reduce the strain of lecturing ,if the surrounding environment is noisy. It uses the power amplifier IC LM380 that gives 2 watts output which is ...

The microphone preamplifier circuit design presented in this schematic use SSM2015 produced by Precision Monolithics Inc. (PMI) which offers a high amplification and low noise ( 1.3nV/√f). Has been ...

ok, so im just fooling around with audio circuit related stuff trying to learn new stuff, and I have some questions.<BR><BR>I am making a Bandpass filter with peak ...

Circuit boards etched and drilled. This is a closeup of one side of the microphone PCB board. As you can see it is a little crowded. The copper pipe before work began. Success! The mic head’s windows ...

“Phantom powering” is the most common way to power a microphone. The technique supplies 48 V provided through two 6.81-kΩ resistors in a differential input line. 1 This idea explains an improved way ...