Patent ID: 11940856
Assignee: TRIDONIC GMBH & CO KG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 17:
18. An output load identification method for detecting presence or absence of a load at a first output port selected from a plurality of output ports in a power supply, the power supply comprising the plurality of voltage output ports, a multiple winding transformer, a first diode, and a second diode, the multiple winding transformer comprising a first secondary winding and a second secondary winding for providing a first voltage at a first node and a second voltage at a second node respectively, the method comprising the steps of:
directly or indirectly connecting an anode of the first diode to the first node;
electrically connecting an anode of the second diode to the second node;
electrically connecting a cathode of the first diode to the first output port;
electrically connecting a cathode of the second diode to a second output port selected from the plurality of output ports; and
electrically connecting a bridging circuit between the first and the second output ports;
wherein:
the second voltage is higher than the first voltage such that when the load is not present at the first output port, the bridging circuit pulls up an output voltage at the first output port to reverse bias the first diode, thereby enabling the presence or absence of the load at the first output port to be detectable by detecting the output voltage at the first output port.