| 摘要 |
A micro mobile phone battery charger includes a casing 1, a rotary concealable charger plug 2, and an internal charger circuit. The charger plug 2 is disposed on the rear side of the casing and is rotatable about ninety degrees from a housed position to a position in which the plug can be inserted into a mains supply socket. A battery 4 may be mounted on the front side of the charger housing for charging. The charging circuit includes an ac input with overvoltage protection, electromagnetic interference filter, voltage stabilization, and ac rectification, a dc input circuit, a battery charging circuit, charging and fully charged indicating circuits, and overcharge prevention circuit. |
