Thyristor with starting and generating cathode base contacts for use in rectifier circuits

摘要

An output thyristor with at least two electrodes located on the cathode side base zone, whereby one of the two electrodes is used as a control electrode (starting gate) and the second electrode is used for the output of current (generator gate), wherein the existing lateral resistance RGK' between the generator gate and the cathode zone and/or the edge length of the generator gate is selected such that at the generator gate of the started thyristor, with an anode current which is smaller than the surge limit of the thyristor in question, the current IG removable therefrom is sufficient when applied to the starting gate of a corresponding thyristor connected in parallel to start the parallel connected thyristor. The lateral resistance between the starting gate and the cathode zone-RGK-is selected as small as possible (RGK<RGK') so that the starting voltage on the starting gate can act directly on the semiconductor junction between the thyristor cathode zone and the cathode base zone.