Title:
DROPPER TYPE BATTERY VOLTAGE COMPENSATION DEVICE
Document Type and Number:
Japanese Patent JP3957204
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a dropper type voltage compensation device of a simple structure.
SOLUTION: The device comprises a comparator which, with a semiconductor switch connected in series to a load, divides a supplied voltage to the load using a resistor and compares the divided voltage to a first reference voltage, and a differential amplifier which generates an error voltage from a second reference voltage. If the divided voltage is higher than the first reference voltage, the semiconductor switch can be controlled with the error voltage of the output of the differential amplifier, and if it is lower than the first reference voltage, the semiconductor switch for preventing overdischarge is made into a shielded state.
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Inventors:
Kazutoshi Tazume
Shodai Naoya
Koji Arai
Keiichi Sato
Takeshi Matsumura
Hirotaka Asami
Shodai Naoya
Koji Arai
Keiichi Sato
Takeshi Matsumura
Hirotaka Asami
Application Number:
JP2003135585A
Publication Date:
August 15, 2007
Filing Date:
May 14, 2003
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
Origin Electric Co., Ltd.
Shindengen Industry Co., Ltd.
Origin Electric Co., Ltd.
Shindengen Industry Co., Ltd.
International Classes:
H02J7/00; G05F1/56; (IPC1-7): H02J7/00; G05F1/56
Domestic Patent References:
| JP6070485U | ||||
| JP10126969A | ||||
| JP8237875A | ||||
| JP2002351556A |
Attorney, Agent or Firm:
Yoshihiko Izumi
Shigeru Kobayashi
Shigeru Kobayashi
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