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:
Jul. 07, 2009
Filed:
Apr. 04, 2007
Jun Kawagoe, Numazu, JP;
Tsuneaki Endou, Numazu, JP;
Mitsuyoshi Shimazaki, Numazu, JP;
Mitsugu Koike, Numazu, JP;
Jun Kawagoe, Numazu, JP;
Tsuneaki Endou, Numazu, JP;
Mitsuyoshi Shimazaki, Numazu, JP;
Mitsugu Koike, Numazu, JP;
Kokusan Denki Co., Ltd., Shizuoka-ken, JP;
Abstract
A power supply device comprises: a voltage converting portion that converts a voltage generated from a power supply portion into an output voltage to be supplied to a load; a voltage divider circuit that generates an output voltage setting signal for providing a set value of the output voltage; a set value changeover portion that turns on/off set value changeover switches to change a voltage divider ratio of the voltage divider circuit to change the set value; a storage device that stores a state appropriate for each set value changeover switch for keeping the value of the output voltage within a specified range; a set value changeover switch control portion that controls the set value changeover switches so as to bring each set value changeover switch into a state as stored in the storage device when the voltage is supplied from the voltage converting portion to the load; and an output voltage control portion that controls the voltage converting portion so as to make zero a deviation between the value of the output voltage and the set value.