Electret microphone pre amp

Electret microphone pre amp

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Mini electret microphone pre amp circuit diagram. The op amp provides a first amplification of 10 (20 dB), this value is equal to the ratio of resistors R3 / R2. The second op amp is mounted in exactly the same way as the first, and also provides a gain of 10, and the ratio R5 / R4. The overall gain is equal to 100 (40 dB).

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1 Title: Electret microphone pre amp
2 Upload by: Amplifier Circuit
3 Upload date: October 27, 2011
4 Image link: https://i2.wp.com/amplifiercircuit.net/wp-content/uploads/2011/10/electret-microphone-pre-amp.jpg?fit=946%2C294
5 Location: 2011/10/electret-microphone-pre-amp.jpg
6 Width: 946 px
7 Height: 946 px

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