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.
With this passive circuit it is possible to modulated in amplitude a low intensity RF signal. The...
This circuit triggers a load that depends on the characteristics of the transistor when we touch...
The circuit shown in the figure can be used to connect a loudspeaker to an amplifier only after...