| 摘要 |
A switch circuit with independent direct current (DC) power supply is provided. The switch circuit includes a switch unit, a power supply unit of the switch unit, an on/off unit of the power supply unit, and/or an on/off unit of the switch unit, and an on/off control signal transmission unit. Through the switch circuit with independent DC power supply, the problem of a waste of power consumption due to redundant power supply generated by a power supply unit when a switch unit is turned off in a conventional switch circuit sharing a DC power supply source with a control unit is effectively solved. In the provided switch circuit, the control unit and the switch unit respectively have independent power supply units, the power supply unit of the switch unit is turned on only when the switch unit needs to be turned on, and the power supply unit is turned off when the switch unit is turned off. |
