Patent ID: 11953964
Assignee: DELTA ELECTRONICS, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 16:
17. A power saving method of controlling an Ethernet power supply, the Ethernet power supply configured to receive a DC voltage, and coupled to a positive end and a negative end of a load device; the Ethernet power supply comprising a first control module, and the first control module configured to receive the DC voltage through a bus positive terminal and a bus negative terminal, and the first control module coupled to the negative end through the bus negative terminal and configured to provide a first control signal through the bus negative terminal to confirm whether the load device is a valid load; the power saving method comprising steps of:
turning on or turning off a path control circuit between a power terminal of the first control module and the bus positive terminal by detecting whether the load device is connected to the Ethernet power supply,
turning on the path control circuit by a first control unit when the negative end is connected to the bus negative terminal,
turning on the path control circuit by a second control unit when the bus negative terminal is grounded, and
turning off the path control circuit when the negative end is disconnected from the bus negative terminal.