Chapter 9
Thyristors
Structure and circuit symbol of a SCR
Chapter Outline
The concepts introduced in this chapter are:
- Shockley diode
- Silicon-controlled rectifier
- TRIAC and DIAC
- Unijunction transistor
- Optoelectric devices and few examples of such devices—photodiodes, phototransistors, LEDs and LASCR
9.1 INTRODUCTION
The electronic devices such as p-n junction semiconductor diode, bipolar junction transistor or field-effect transistor are the devices that can handle very low powers and are not suitable to be operated at high powers of the order of kilowatts or above. To control these high powers, special electronic devices are required. ...
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