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No-CA3080 Guitar Compressor

(Summer Circuits 2010 article)

The TDA7052A is a readily available amplifier chip (Farnell # 526198) that has a DC controlled volume input. Here, the IC is used as the variable gain amplifier in a guitar compressor, so the effect can be accomplished without the hard to obtain CA3080 operational transconductance amplifier (OTA). Note that the suffix-less TDA7052 does not have DC volume control.

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