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:
May. 26, 1998
Filed:
Feb. 14, 1997
Applicant:
Inventors:
Takemi Beppu, Gunma, JP;
Hiroshi Matsui, Gunma, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363 60 ; 363 59 ;
Abstract
A saw-wave generator (51) creates a saw-wave. Two comparators (COMP1, C0MP2) obtain two control signals having different duty ratios. Using these two control signals, two transistors (54, 56) are switched ON and OFF in complement and at voltage boost output when transistor (54) is OFF and transistor (56) is ON, transistor (57) is switched from ON to OFF and transistor (59) is switched from ON to OFF. A quadrupled voltage is thereby obtained.