| 摘要 |
PROBLEM TO BE SOLVED: To provide a digital camera constituted to extend the battery lifetime by making a normal operating voltage range of the lithium ion batteries coincident by selecting the number of the dry batteries. SOLUTION: In the digital camera with which two or more kinds of DC power sources 2, 3 on the primary side can be connected, the DC power source on the primary side is battery power sources 2, 3, the battery power source 2, 3 can be stored in the same space, the battery power sources 2, 3 are in the different shapes, one of the batteries in the different shapes is only a secondary battery 3, the other is usable by the primary or secondary battery and at least one kind of constant operating voltage range and a constant operating voltage range of only the secondary battery 3 are defined as approximately the same voltage in the primary or secondary battery 3. COPYRIGHT: (C)2004,JPO |
