A module is a separate unit of software or hardware. Typical characteristics of modular components include portability, which allows them to be used in a variety of systems, and interoperability, which allows them to function with the components of other systems.
The symbol for SCR is also shown in figure which is very familiar to Diode's Symbol. An SCR is a short form for Silicon Controlled Rectifier, Which is a three terminal semiconductor device.This device is used for rectification, regulation and inversion etc. It is also used as a controlled switch in high rating instruments. That is why this device has such importance.It is a Unidirectional Power Switch.he symbol for SCR is also shown in figure which is very familiar to Diode's Symbol. An SCR is a short form for Silicon Controlled Rectifier, Which is a three terminal semiconductor device.
The control terminal of the SCR is named the gate and it is connected to the p-type layer that adjoins the cathode layer. Structure of a thyristor or silicon controlled rectifier (SCR). Thyristors are usually manufactured from silicon, although, in theory other types of semiconductor could be used.The first reason for using silicon for thyistors is that silicon is the ideal choice because of its overall properties.t can be seen that current will only flow in one direction through the thyristor. If a reverse voltage is applied, then no current will flow, even if some gate current is applied. In this way for thyristor circuits used for AC, operation only occurs over one half of the AC waveform.