| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus capable of operating the electronic apparatus by other external power supplies and exchanging the external power supplies during charging while monitoring charge current, even under such a condition that secondary cells are charged by the external power supplies in the electronic apparatus which can be driven by the integrated secondary cells and the plurality of external power supplies. <P>SOLUTION: In this electronic apparatus which can be driven by the integrated secondary cells and the plurality of external power supplies; the electronic apparatus is constituted of a first connection which can be connected with the first external power supply having constant current restriction or constant energy restriction with constant voltage; a second connection which can be connected with the second external power supply of which the restriction is larger except the first external power supply; and a power supply switching control circuit which recognizes that the charge control circuit for controlling the charge voltage and the charge current at the time of charging the secondary cells with the first external power supply or the second external power supply is connected with the respective power supply voltages, and controls by switching a power supply source for driving the electronic apparatus and a power supply source for charging the secondary cells from the secondary battery, the first external power supply, and the second external power supply. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
