| 摘要 |
The device automatically transfers the corresponding voltage with a microprocessor and supplies the reference voltage to the load. The device includes a power supply unit (21) for detecting the level of input voltage and supplying power, a level detection unit (22) for detecting AC voltage level, a photo-coupler (23) for interfacing the detected signal, an inverting buffer (24) for inverting and buffering the control signal, a micom (25) for controlling the devices, and an action control unit (28) for driving the relay (RY21) by the output signal of a photo-coupler (27). |
