| 摘要 |
PURPOSE:To save the operation of application of power by turning on the power source of a starter and a display device in interlocking with the operation of a selector switch to keep the on-state until the power supply is turned off. CONSTITUTION:Selectors 11-20 have a contactor (a) inputting selecting information to a selection digital circuit 2 and also contactors b, c connecting the power supply 4 to the starter 3 and the display device 5, and the power is turned on by depressing the selector switches. Although the contactor (b) is disconnected by releasing the push button, a switch 7 becomes conductive by the application of power to its relay coil to ensure the power supply to the starter 3. The power application to the relay is interrupted by depressing the off-switch for the stop of operation to interrupt the power supply. Since the off-switch is formed as self-returning type, the off-switch is restored automatically after the operation of the device is stopped for preparing the next start. |
