Controller for on-off switching of power supplies

A controller for on-off switching of one or more power supplies, comprising:

• a microprocessor;
• a power supply interface and reset circuit connected to the microprocessor;
• a communication interface connected to the microprocessor, for converting voltage signals between the microprocessor and an outside communication interface;
• an on-off control circuit which is connected to the microprocessor, comprising at least one relay for controlling on-off switching of the power supplies, and an amplifying circuit for driving said relay;
• a feedback portion connected between the microprocessor and the on-off control circuit, for feeding on-off states of the power supplies to the microprocessor;
• a memory connected to the microprocessor, for storing the data processed by the microprocessor;
• and
• a voltage converter for providing steady voltage to the power supply interface and reset circuit, the communication interface, and the on-off control circuit.