LASCR (light-activated SCR) is also a type of thyristor made up of semiconductor material that turns ON when light radiations fall on it. LASCR is almost similar to SCR except it will turn ON only when exposed to sunlight.
To fire the SCR, a short-time current pulse at its gate is to be applied. The delay of firing and controlling the instant at which the pulse occurs within each half cycle is to be provided by the firing circuit.
All thyristors will have their own capability and they must be operated in their definite capability limits known as ratings. If a thyristor is
The circuit used for turning ON the thyristor by giving gate pulses is called the Firing or Triggering Circuit of SCR.
In class A and class B commutation methods discussed in the earlier articles, there is only one SCR used, …
The class-B commutation of the thyristor is also called Resonant Pulse Commutation or Current Commutation. It is a type of forced commutation technique that uses a charged
A snubber circuit is a protective circuit used to protect the SCR from false triggering and transient overvoltages. It basically consists of a