Computer-aided experimental investigation of the correct turn-on in amplifying gate thyristors

A two-dimensional computer model has been developed for the experimental investigation of the correct turn-on in various types of amplifying gate thyristors, i.e, of the reliable firing at the auxiliary emitter prior to the main one. The accuracy of the computations was proved by the features of several groups of standard and fast turn-off thyristors with amplifying gate. The results of investigation, performed in this paper for dual ring gate thyristors, lead to the improvement of the turn-on reliability in thyristors, having essentially the same very high di/dt capability in any possible turn-on conditions.