摘要 |
A circuit device contains a main circuit structure for main charging and a setting unit incorporated into the circuit structure for setting a weak current. The charging device includes a power-source for supplying a charging current to a secondary battery, an operational amplifier for controlling the supply of the charging current by the power source, and a power element for controlling the supply of the charging current to the secondary battery. Main charging is performed on the secondary battery by supplying a normal current to the secondary battery as the charging current. Trickle charging is performed on the secondary battery by supplying a weak current to the secondary battery as the charging current.
|