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:
Sep. 30, 2003
Filed:
Dec. 20, 2001
Hitachi, Ltd., Tokyo, JP;
Abstract
A parallel power system is provided which can flexibly change output currents and the number of channels in short time and at low cost. A back board of the parallel power system has connectors ECC and DCC for plug-in mounting power source circuits to and an electronic circuit . Terminals of the connectors DCC and EDC are connected by wiring lines HP. The power source circuits to constitute a first voltage channel by a power source line DH and a parallel operation control line PCH of the electronic circuit , whereas the power source circuits to constitute a second voltage channel by a power source line DH and a parallel operation control line PCH . When a specification of the electronic circuit is to be changed, only the power source lines DH and DH and parallel operation control lines PCH and PCH are changed without changing the back board and the like.