This silencer or squelch preamp circuit was found in a documentation for radio amateurs. It completely mutes the circuit when there is no sound picked up by the microphone.
This circuit uses comparators equivalent to LM339 to generate signals of two waveforms whose...
A Reset-Set flop-flop capable of directly controlling a relay or other power load can be...
The circuit shown here can be used to produce low-frequency sine wave signals from CMOS logic. The...