Importance

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Abstract

An Ethernet port is configured with a load circuit that reduces costs compared to the conventional Bob-Smith load circuit when providing Power Over Ethernet (POE). A first centertap from a first transformer is coupled to a first side of a first capacitor. A second centertap from a second transformer is coupled to a first side of a second capacitor. The second side of the first and second capacitors is coupled to a common node. The common node forms an electrical midpoint between the two centertaps. An avalanche diode can be placed between the two centertaps in parallel with the two series connected capacitors and power can be injected on the two centertaps to provide POE. A single resistor can be used to provide load termination before a safety capacitor.

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First Claim