compressor circuits

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Audio compressor

Oct 25th

Posted by ElectroSchematics.com in Kits

1 comment

This is a dynamic audio compressor which output a constant audio level and can be used for transmitters. It uses a preamplifier with TDA 1054 produced by SGS-ATES. IC1a is a preamplifier stage with a total gain of 50 (1 + R5/R4). IC1b is connected as a amplifier stage with a 400x gain (1 + R11/R10). The audio compressor power supply has 12V. (more…)

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Mini audio compressor schematic

Sep 22nd

Posted by ElectroSchematics.com in DIY

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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. (more…)