4 microphones mixer circuit with TL081

Published:2012/9/10 21:17:00 Author:Ecco | Keyword: 4 microphones, mixer | From:SeekIC

A TL081 op amp is used as a high impedance to low. converter and a signal mixer. The input impedance is about 1 megohm and the output impedance is about 1 kohm. Two 9 volt batteries are used as power source.



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