Title:
CHARGING CIRCUIT DEVICE
Document Type and Number:
Japanese Patent JP2004343968
Kind Code:
A
Abstract:
To provide a charging circuit device capable of improving a charging efficiency for a charging capacitor and charging characteristics.
This charging circuit device comprises a converter transformer 13, a battery 11, a FET14 for switching on and off electric current passing through a primary coil of the converter transformer from the battery, the charging capacitor C2 connected to a secondary coil of a converter transformer through a rectification element, and a controller 15 for varying a driving frequency for switching the FET14 according to the charging voltage of the charging capacitor.
Inventors:
NITO TOSHIO
Application Number:
JP2003140815A
Publication Date:
December 02, 2004
Filing Date:
May 19, 2003
Export Citation:
Assignee:
TOKYO COIL ENG KK
International Classes:
G03B15/05; H02J7/10; H02M3/28; H04N5/225; (IPC1-7): H02M3/28; G03B15/05; H02J7/10; H04N5/225
Attorney, Agent or Firm:
Takehiko Suzue
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto