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.

Date of Patent:
Sep. 12, 2000

Filed:

Jul. 13, 1999
Applicant:
Inventor:

Shinya Higashi, Nishitama-gun, JP;

Assignee:

Kabushiki Kaisha Toshiba, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363 21 ; 363 71 ;
Abstract

A power supply apparatus in which at least one or more DC power supply devices having impedance elements with the same impedance on output lines are parallel-connected, and supply output voltages to a common load via the impedance elements includes an external adjustment voltage supply circuit for supplying an adjustable external adjustment voltage to each DC power supply device, and an internal voltage control circuit for comparing the external adjustment voltage from the external adjustment voltage supply circuit incorporated in each DC power supply device with the voltage applied to each impedance element, and controlling the output voltage so as to make these voltages equal, thereby equalizing voltages applied to the impedance elements in the respective DC power supply devices.


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