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. 03, 1979
Filed:
Jan. 09, 1978
Tung C Chen, Villanova, PA (US);
Systematics Inc., West Chester, PA (US);
Abstract
The present circuit controls the high current delivered to a load from a direct current (d.c.) power supply through a pair of power silicon controlled rectifiers (SCRS). For each power SCR there is also employed an associated current conduction control SCR. Each of the current conduction control SCRS acts, when triggered, to terminate the current conduction of its associated power SCR. Each current conduction control SCR is controlled by the provision of current thereto during conduction and non-conduction half cycles of an alternating current source, which operates independently of the d.c. power supply. Accordingly, the occurrence of a current (load) transient, even though it may provide an abundance of current to either of said power SCRS, will not prevent the termination of the current conduction of said power SCR for an excessive period after it should have been turned off.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile