Patent ID: 9548613
Date: 2017-01-17
CPC Classifications: G06F,H02J,H04L

Claim:
1. A system comprising: a rectifier bridge configured to electrically connect to a power over Ethernet (PoE) power sourcing equipment (PSE) for receiving power from the PSE, the rectifier bridge comprising a first input terminal and a second input terminal; and a powered device controller operatively connected to the rectifier bridge and configured to control power supply to a load, the load configured to receive power from the PSE and a second power source, the powered device controller configured to source maintain power signature (MPS) current to the power sourcing equipment using at least one of the first input terminal or the second input terminal of the rectifier bridge when the second power source is furnishing power to the load and the power furnished by the second power source is greater than the power furnished by the PSE, wherein the rectifier bridge electrically isolates the first input terminal and the second input terminal from a ground return of the power sourcing equipment to prevent sourcing of the MPS current through the ground return.