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:
Aug. 24, 1999
Filed:
May. 07, 1997
Applicant:
Inventor:
Tomoichiro Ohta, Shimizu, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M / ; H02M / ;
U.S. Cl.
CPC ...
323282 ; 323284 ; 363 41 ; 363 21 ;
Abstract
Disclosed is a power control device in which, to prevent noise generation when a load is driven by an AC power source, a reactor, the load, and a switching element are connected in series to the output of a rectifier, a diode element being connected in parallel to the reactor and the load, the switching element being driven at a frequency higher than that of the AC power source. Further disclosed is an image forming apparatus utilizing this power control device.