| 摘要 |
<p>Disclosed is a portable telephone set which has a power supply in which a secondary cell is employed; a charging detector for detecting whether a charger for charging current into the secondary cell is connected to the power supply, wherein the charging detector outputs a detection signal when it detects that the charger is connected to the power supply; and a power controller which controls to turn on power of the portable telephone set when receives the detection signal from the charging detector. <IMAGE></p> |
