This squelch circuit is placed at the input of the single receiver audio amplifier stage. Its purpose is to silence background noise. The circuit is from an 80's documentation.
This circuit appears in other configurations on this site. Its purpose is to operate a small water...
June 2016 - It can be purchased from Mouser Electronics the TAS5720x the evaluation module from...
In the figure we have a circuit of a dimmer for fluorescent lamps. The circuit is from...