To highly precisely measure a current value of wiring which is installed on a vehicle and through which a relatively heavy current flows and a current value of wiring through which a relatively light current flows according to a relatively simple method.
A charging circuit (100) comprises: a first circuit which is installed on a vehicle (1) equipped with a battery (11) and is a circuit that allows electric power to be supplied to the battery; a second circuit through which a heavier current than that of the first circuit flows and is a circuit that allows electric power to be supplied to the battery; switching means (14, 15, 16) that can mutually switch between the first circuit and the second circuit; and a current sensor (13) that has a measurement section capable of measuring each current value of the first circuit and the second circuit. The first current has amplification means that amplifies a current value measured by the measurement section.
HAYASHI TAKASHI
| JP2002257866A | 2002-09-11 | |||
| JP2010035280A | 2010-02-12 | |||
| JP2005037323A | 2005-02-10 | |||
| JPH10304501A | 1998-11-13 | |||
| JP2004294306A | 2004-10-21 |
Koji Yamamoto
Satoshi Nakamura