09/15/13

A mini microphone preamplifier

http://dangerousprototypes.com/2013/09/10/a-mini-microphone-preamplifier/

Via: dangerousprototypes.com

Boris Landoni from Open Electronics has written an article about the design of amicrophone preamplifier:

This Mini Microphone Preamplifier could be used as the first stage to amplify any audio signal. The device is equipped with a microphone plus clips to be connected to a 9V battery. Amplification is achieved by using an operational LM741 amplifier. The volume level could be adjusted via a trimmer.

FT4891