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:
Apr. 12, 1977
Filed:
Jul. 30, 1975
Applicant:
Inventors:
Larry R Harmon, Jeffersontown, KY (US);
Donald J Simon, Louisville, KY (US);
Assignee:
General Electric Company, Louisville, KY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219 / ; 315352 ; 323 79 ; 331 86 ;
Abstract
Apparatus for varying microwave power level is included in a microwave oven. The microwave oven includes a magnetron for producing microwaves used for heating and a half-wave voltage doubler for supplying half-wave pulsating DC voltage to the magnetron. In order to vary voltage and thus power output of the magnetron, the charging of the capacitor in the half-wave voltage doubler is controlled by a variable resistance connected in series with the rectifier in the otherwise conventional half-wave voltage doubler.