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:
Aug. 13, 1991
Filed:
Apr. 25, 1990
Applicant:
Inventors:
Friedhelm Bauer, Wurenlingen, CH;
Thomas Stockmeier, Wurenlingen, CH;
Assignee:
ASEA Brown Boveri Ltd., Baden, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 38 ; 357 39 ; 357 234 ;
Abstract
In the case of a symmetrically constructed TRIAC, which comprises a semiconductor substrate (20) with an internal n-base layer (9), two adjoining p-base layers (7, 11), two n-emitter regions (4, 12) let into the p-base layers (7, 11), two main electrodes (1, 17) arranged on the principal faces (29, 30), and two firing devices, a simplified control is achieved by means of MOS-controlled short circuits (3, 5, 6, 7 or 11, 13, 14, 16) at the n-emitter regions (4 or 12).