Thyristor meaning

thīristər
Any of various solid-state, semiconductor devices with three or more pn junctions, used as an electronic switch, rectifier, etc.
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A semiconductor component that is unidirectional like a diode, but is switched like a transistor. It is widely used to control high currents and voltages in motors, lighting, heating and power applications. Once turned on at the gate, it allows current to flow until it falls below a certain threshold. In an AC circuit, it stops conducting each time the wave crosses over zero and can rectify AC to DC. See diode, PN junction and n-type silicon.
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(physics) A semiconductor diode having an extra "gate" terminal to switch it on.
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Origin of thyristor

  • Ancient Greek θύρα (thura, “entrance”) + resistor.

    From Wiktionary