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. 06, 1996
Filed:
Apr. 14, 1995
Applicant:
Inventor:
Hiroshi Mimura, Nagaoka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363 16 ; 363 21 ;
Abstract
Disclosed is a switching power supply which can realize the saving of space and low-cost manufacturing. On-off control of FET (3), intermittently applies D.C. input voltage V-IN to the primary windings (1A, 2A), of transformers (1,2). Current detection circuit (15) detects the voltage drop caused by the resistance of the secondary windings (1B,2B) to produce output current detection signals in proportion to the load current (1D). The resistance of the secondary windings (1B,2B) of transformers (1,2) can be employed as a current detector, whereby saving of space and low-cost manufacturing of power supplies can be realized.