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4 microphones mixer circuit with TL081

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This circuit is also Crossed to: Preamplifiers , Audio Mixers , Microphone Circuits

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.
4 microphones mixer circuit with TL081

Battery must be several hundreds of hours with alkaline batteries.


Datasheet file1: Click here to download TL081.pdf datasheet.


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