How is a thyristor switching different from a transistor switching
The major difference between transistor and thyristor is that transistor requires regular current pulse in order to ensure conduction. On the contrary, a thyristor is a 4-layer device that needs only a single triggering pulse to initiate and maintain conduction.
In a transistor is simple low voltage and its switching is simple as you give some small value to its base. In thyristor, once you turned it on by gate pulse then it’s not as simple to turn it off as in transistor. To turn it off for your desire you need to apply different methods of “commutation”
This commutation technique falls into A to F Categories