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. 13, 2010
Filed:
Jan. 31, 2005
Yoshiho Seo, Kanagawa, JP;
Kazushige Takagi, Kanagawa, JP;
Tadayoshi Kosaka, Kanagawa, JP;
Hajime Inoue, Kanagawa, JP;
Koichi Sakita, Kanagawa, JP;
Yoshiho Seo, Kanagawa, JP;
Kazushige Takagi, Kanagawa, JP;
Tadayoshi Kosaka, Kanagawa, JP;
Hajime Inoue, Kanagawa, JP;
Koichi Sakita, Kanagawa, JP;
Hitachi Plasma Patent Licensing Co., Ltd, Tokyo, JP;
Abstract
A charging/discharging apparatus () for charging a capacitance to be charged/discharged (Cp) includes: a recovery capacitor (Cr) for recovering electric energy which has one terminal connected to a first power supply (GND) through first switch means (SW) and another terminal connected to a second power supply (Vs+Vo) through second switch means (SW); first path forming means (D) which has one terminal connected to a connection point between the second power supply and the other terminal of the recovery capacitor and another terminal connected to the capacitance to be charged/discharged, and charges the capacitance to be charged/discharged through a resonant inductor (L) when the first switch means is turned on; second path forming means (D) which has one terminal connected to a connection point between the first power supply and the one terminal of the recovery capacitor and another terminal connected to the capacitance to be charged/discharged, and discharges the capacitance to be charged/discharged through the resonant inductor (L) when the second switch means is turned on to recover electric energy to the recovery capacitor.