| 摘要 |
PURPOSE:To prevent interruption of power supply to electronic machinery, when a battery is replaced, by controlling a battery switching means based on outputs from latch detecting means and battery detecting means. CONSTITUTION:When power is fed from a battery 11, latches 15, 16 of the batteries 11, 12 are closed. When a battery cover is opened in order to remove the battery 11, a latch detecting section 17 detects opening of the latch 15 and a control section 19 turns a switch SW2 OFF and turns a switch SW3 ON based on the detection results. Subsequent removal of the battery 11 is detected of a battery detecting section 20 and the control section 19 turns a switch SW1 OFF and turns a switch SW4 ON. |
