Thyristor with starting and generating cathode base contacts for

Details Thyristor with starting and generating cathode base contacts for Thyristor with starting and generating cathode base contacts for

1979-05-22

1980-10-28

Clawson, Jr., Joseph E.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

357 51, 357 55, 357 86, 307252G, 307252K, H01L 2974

Patent

active

042310547

ABSTRACT:
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 R.sub.GK ' 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 I.sub.G 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--R.sub.GK --is selected as small as possible (R.sub.GK <R.sub.GK ') 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.

REFERENCES:
patent: 3097335 (1963-07-01), Schmidt
patent: 3364440 (1968-01-01), Schreiner
patent: 3486088 (1969-12-01), Gray et al.
patent: 3670217 (1972-06-01), Boksjo et al.
patent: 3740584 (1973-06-01), McIntyre et al.

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