| 摘要 |
<p>PURPOSE:To easily charge a second-order battery by using the second-order battery for a power source for cursor and switching a normal measuring mode and the charging mode of the second-order battery by a time division system. CONSTITUTION:In the measuring mode, mode changeover switches (MS) 18 and 19 are connected to an upper contact, the voltage of a second-order battery 23 is supplied to loads 12-15, a signal frequency current amplified by an amplifier circuit 15 is supplied to a cursor coil (KC) 10, and a current to flow to the KC 10 is increased by tuning a capacitor 16. Then, by executing the signal processing of a voltage induced at the X winding coil or Y winding coil of a grid plate, a coordinate position is decided. In the charging mode, the MS 18 is connected to a lower contact, a power supply frequency AC voltage induced at the KC 10 is boosted by tuning a capacitor 17 and impressed to a rectifier circuit, and the second-order battery 23 is charged.</p> |
