| US 7,525,282 B2 | ||
| Battery-operated equipment including a microcomputer | ||
| Takafumi Oba, Kusatsu (Japan); and Mikihiro Yamashita, Echi-gun (Japan) | ||
| Assigned to Matsushita Electric Works, Ltd, Osaka (Japan) | ||
| Filed on Feb. 23, 2006, as Appl. No. 11/359,389. | ||
| Claims priority of application No. 2005-054250 (JP), filed on Feb. 28, 2005. | ||
| Prior Publication US 2006/0192532 A1, Aug. 31, 2006 | ||
| Int. Cl. H01M 10/46 (2006.01) | ||
| U.S. Cl. 320—107 | 8 Claims |
| 1. A battery-operated equipment comprising:
a battery;
a constant voltage power source that derives a constant voltage from a battery voltage across said battery; and
a microcomputer that incorporates at least an A/D converter and has terminals for the A/D converter and a power input terminal,
said microcomputer being connected with said battery via said power input terminal to use said battery voltage as a power
source voltage,
said A/D converter being connected with said constant voltage power source via a specific terminal of said terminals for the
A/D converter to use said constant voltage as a voltage for the A/D converter, and
said A/D converter being connected with said constant voltage power source via a reference voltage input terminal of the A/D
converter as said specific terminal to use said constant voltage as a reference voltage for the A/D conversion.
|