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:
Oct. 20, 1981
Filed:
Aug. 13, 1979
Charles W Eichelberger, Schenectady, NY (US);
Rudolph A Dehn, Schenectady, NY (US);
Robert J Wojnarowski, Clifton Park, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
A power supply for controlling the duty-cycle of a microwave oven magnetron and the like power-energizing load, includes a parallel combination of a non-linear resistance element, such as a varistor and the like, and a gateable semiconductor switching device, such as a triac and the like, in series with a power supply voltage-doubler diode, connected in parallel across the magnetron. The flow of current through the magnetron is substantially reduced or prevented when the semiconductor switching device is gated to an 'off' condition and is substantially enabled to a normal current flow value when the semiconductor switching device is gated to an 'on' condition, typically by high frequency squarewaves provided at the gate electrode.