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:
Jul. 17, 1990
Filed:
Apr. 21, 1982
Michael Stoisiek, Ottobrunn, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
A power thyristor with internal current amplification has an auxilary emitter region which is contacted by an auxiliary emitter electrode. Disconnectible current paths designed as MIS structures are provided between the auxiliary emitter electrode and the base layer adjacent to the auxiliary emitter region. The current paths, which effect a stabilization in their switched-on state, are switched off for the duration of the ignition operation in order to increase the trigger sensitivity. Each MIS structure exhibits a short-circuit region inserted into the adjacent base layer spaced from the auxiliary emitter region, said short-circuit region being connected to the adjacent base layer over a conductive coating.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile