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Mini audio compressor schematic

2016-01-10 05:06  
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This mini audio compressor circuit use only one active component T1. The audio signal goes thru C1, R1, D1, C2, R3. Still a part of audio signal charge the D3/D4 detector and creates a control voltage for T1.
The fading time depends on C4 and R5. With an audio input variation of 50dB, the output signal get is -3dB. You can use this audio compressor circuit in a transmitter.

Audio compressor circuit diagram


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