Midspan powering without the use of data transformers in a...

Details Midspan powering without the use of data transformers in a... Midspan powering without the use of data transformers in a...

2007-09-25

2010-12-14

Deberadinis, Robert L. (Department: 2836)

Electrical transmission or interconnection systems

Superimposed unlike currents

Ac and dc sources

Reexamination Certificate

active

07851938

ABSTRACT:
A midspan power sourcing equipment (PSE) for operation with power over Ethernet (PoE). The midspan PSE provides powering over wire pairs that are also used for data communication. To reduce costs by the midspan manufacturer, the midspans can be designed without the use of data transformers. Rather, midspans can include transmit/receive couplers that have blocking capacitors and divider trees for the insertion of power.

REFERENCES:
patent: 7057899 (2006-06-01), AbuGhazaleh et al.
patent: WO 2006/052360 (2006-05-01), None
David Law and Wael William Diab, “100BASE-T normative 350uH inductance specification and IEEE P802.3at,” IEEE P802.3at DTE Power Enhancements Task Force, Jul. 16-19, 2007.

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