The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 28, 1980
Filed:
May. 22, 1979
Christian Ruetsch, Turgi, CH;
Roland Sittig, Umiken, CH;
BBC Brown, Boveri & Company, Limited, Baden, CH;
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.