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Basic knowledge of thyristor

Thyristor Fundamental

What is a thyristor and how does it work? A thyristor is a solid-state semiconductor device with four layers of alterna

Welcome to the Thyristor!

Thyristor Fundamental

What is a thyristor and how does it work?

A thyristor is a solid-state semiconductor device with four layers of alternating P- and N-type materials. It acts exclusively as a bistable switch, conducting when the gate receives a current trigger, and continuing to conduct until the voltage across the device is reversed biased, or until the voltage is removed (by some other means). Some sources define silicon-controlled rectifier (SCR) and thyristor as synonymous.

Thyristor is a four-layer device that needs only a pulse to make it conducting and thereafter it remains conducting. In its most basic form, a thyristor has three terminals: anode (positive terminal), cathode (negative terminal), and gate (control terminal). The gate controls the flow of current between the anode and cathode.

 

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