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:
Dec. 21, 1982
Filed:
Jun. 18, 1980
Applicant:
Inventor:
Richard H Baker, Bedford, MA (US);
Assignee:
Reliance Electric Company, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 91 ; 361 98 ; 361101 ;
Abstract
A protection circuit for a switching amplifier having a plurality of serially stacked switching transistors includes a voltage breakdown device and a current responsive device for sensing the voltage developed between the emitter and collector electrodes of each conducting switching transistor. The base drive for any transistor is removed in response to Vce of a switching transistor exceeding a predetermined value.