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Thyristor
From Wikipedia, the free encyclopaedia

A thyristor is a solid-state semiconductor device with four layers of alternating N and P-type material. They act as bistable switches, conducting when their gate receives a current trigger, and continue to conduct while they are forward biased (that is, while the voltage across the device is not reversed).

Some sources define silicon controlled rectifiers and thyristors as synonymous.[1] Other sources define thyristors as a larger set of devices with at least four layers of alternating N and P-type material.

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