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:
Mar. 17, 1987
Filed:
Nov. 06, 1985
Applicant:
Inventor:
Charles W Edwards, Monroeville Boro, PA (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
363 96 ; 363 57 ; 363136 ; 307597 ; 307603 ;
Abstract
Transistors or GTO's of an inverter are switched ON/OFF with a delay circuit which has a capacitor first charged at a forcing rate, then, held at an intermediary level, and which is first discharged at a forcing rate, then held at an intermediary level, thereby to provide underlap, minimum ON and OFF time control and noise filtering with a high precision.