VOX is a voice controlled switch, used often for microphones replacing the classic switching button. The actuating threshold is set thru the volume potentiometer of the amplifier which command the VOX ...

The threshold of switching VOX’s is about 600mV (R2). Maximum input voltage is determined by maximum admissible dissipation on R2 and R3. As a rule entry tension should not exceed 40Vvv. VOX consumed ...