| 摘要 |
A battery charging circuit according to one embodiment of the present technology includes a charging power source unit which generates an internal power source by using an external power source, a charging unit which includes a plurality of batteries, outputs a measurement signal determined according to the voltage level of each battery, and charges at least one battery in response to a charging control signal, and a control unit which outputs a charging control signal which is previously stored in response to the measurement signal. The charging control signal can be a signal which selects at least one of a first mode of charging one battery to be charged by using one charging battery, a second mode of charging one battery to be charged by using a plurality of charging batteries, and a third mode of partially or entirely charging the batteries by using the internal power source. |
