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:
Sep. 28, 1982
Filed:
May. 15, 1981
Peter Voss, Munich, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
Circuit arrangement for reducing recovery time of a thyristor formed with a semiconductor body having at least one emitter zone contacted by an emitter electrode and having at least one auxiliary emitter zone and a base zone contacted by an auxiliary emitter electrode, includes a shunt between the emitter zone and the base zone, a capacitor disposed in a line mutually connecting the emitter electrode and the auxiliary emitter electrode, the emitter electrode being the cathode and being disposed on the surface of the semiconductor body and electrically connected to the emitter zone, the shunt between the emitter zone and the base zone being formed through the capacitor, a series connection of a resistance and a diode being connected in parallel with the capacitor, the diode having a lower threshold voltage than that of an imputed diode formed by the cathode-sided emitter zone and the base zone of the thyristor, the diode of the series connection being poled with respect to the cathodic emitter electrode in the same sense as is the imputed diode of the thyristor.