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:
Nov. 29, 1994
Filed:
Jun. 09, 1992
Applicant:
Inventor:
Tadashi Kobayashi, Tokyo, JP;
Assignee:
NEC Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
307125 ; 307130 ;
Abstract
A switching power source applicable to an electronic apparatus and capable of stabilizing an output voltage with a high transform efficiency even when an input voltage varies over a broad range. The output voltage is controlled at the primary circuit side of the power source. The base current is maintained constant with no regard to the input voltage.