A device used to open or close an electrical circuit. Also an electronic device used to alternate between two input SIGNALs, in some cases the rate of switching being controllable by a PULSE or triggering voltage.
Rapid switching of the on/off variety is called chopping, and can be effected by using a voltage-controlled amplifier (VCA) triggered by a PULSE WAVE or SQUARE WAVE.
See: ELECTROACOUSTIC, SOUND SYNTHESIZER. Compare: PEAK CLIPPING, RECTIFICATION.