Definitions for "Silicon Controlled Rectifier"
A semiconductor diode in which current through a third element, called the gate, controls turn-on, and the anode-to-cathode voltage controls turn-off.
A reverse blocking triode thyristor pnp device.
Also known as a thyristor; like a diode it only allows electric current to flow through it in one direction, but in addition it can be controlled so that its "turn-on" can be delayed indefinitely.
A type of dimmer used in lighting systems that cuts or clips that AC waveform. Causes intense interference if sensitive audio cables are run near them; however, newer models have better filters.