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. 09, 1985
Filed:
Sep. 06, 1983
Milton D Bloomer, Schenectady, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
A reverse-phase-control power switching circuit provides for controlling the flow of current through a load, from an A.C. source, and includes circuitry for limiting the in-rush current for a load having a variation of resistance due to initial turn-on phenomenon. Load current is enabled to flow at each zero crossing of an A.C. source, connected in series with the load and the switching circuit of the present invention. Load current is terminated at a time, prior to the next source waveform zero crossing, to either maintain a substantially constant current conduction angle for a load with a substantially-constant steady-state resistance, or to limit load instantaneous current to a maximum level, set to a value somewhat greater than the desired normal load current, during low-load-resistance in-rush time intervals.