| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery power supply device which is made small, efficient and with a low current consumption. SOLUTION: The battery power supply device is constituted of chargeable cells 101a and 101b with the supply voltage 3.6 V, a resistor R actuating as a voltage regulating part, and a LC filter 103 actuating as a noise removal circuit. The sum of the supply voltage of the cell 101a and the one 101b, that is 7.2 V, is supplied to a 7.2 V system circuit comprising a PA module, or the like. While a voltage of 3.3 V is supplied to the 3.3 V system circuit (the control parts, the small signal parts, and the like), to which an ample voltage can be supplied by the supply voltage of one cell, from the cell 101b on the ground side via the resistor R and the LC filter 103. |
