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:
Feb. 20, 1990
Filed:
Oct. 17, 1988
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M / ; H05B / ;
U.S. Cl.
CPC ...
363 21 ; 363 95 ; 219 / ; 315106 ;
Abstract
In a magnetron power supply for obtaining a high voltage for an anode by an inverter circuit, there is disclosed the improvement including a detector for detecting an AC output current of a secondary-side high voltage winding of a transformer instead of detecting an anode current (after being rectified) for the magnetron to control a magnetron output to a desired value. In this constitution, a current value is detected by clipping a positive or negative side of an output of the detector.