Thyristors Introduction & Characteristics. Introduction. One of the most important type of power semiconductor device. Compared to transistors, thyristors have lower on-state conduction losses and higher power handling capability.
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Reverse breakdown voltage
The thyristor is a four-layer, three terminal semiconducting device, with each layer consisting of alternately N-type or P-type material, for example P-N-P-N. The main terminals, labeled anode and cathode, are across the full four layers, and the control terminal, called the gate, is attached to p-type material near to the cathode.
Construction of SUS
Load voltage regulated by thyristor phase control.Red trace: load voltageBlue trace: trigger signal.