Question

in the reverse blocking mode the middle junction (j2) has the characteristics of that of a

Answer 1

In the reverse blocking mode the middle junction (j2) of a thyristor has the characteristics of that of a capacitor.

It is like a capacitor, as the dv/dt voltage triggering turns on the device. The charging current is given by,

Ic = Cjdv/dt

A thyristor is a four layer 3 junction p-n-p-n semiconductor device consisting of at least three p-n junctions, namely J₁,J₂ and J₃ functioning as an electrical switch for high power operations. It has three basic terminals, namely the anode, cathode and the gate mounted on the semiconductor layers of the device.