Bypass discharge path for a power sourcing equipment

Details Bypass discharge path for a power sourcing equipment Bypass discharge path for a power sourcing equipment

2007-10-09

2007-10-09

Patel, Nitin C. (Department: 2116)

Electrical computers and digital processing systems: support

Computer power control

C713S324000, C713S340000, C370S318000

Reexamination Certificate

active

11045288

ABSTRACT:
A method for preventing an excess voltage from appearing at an output of a power over Ethernet controller, the method comprising: sensing that a powered device has been disconnected from a port; enabling a bypass path around a means for unidirectional current flow operatively connected to the port; and disconnecting power to the port responsive to the sensed disconnect, whereby the bypass path enables a discharge path for an output capacitor present across the port. The invention also provides for a circuit having a bypass path around a means for unidirectional current flow, the bypass path being enabled by a control circuit to prevent an excess voltage from appearing at a sensing input of the control circuit. In an exemplary embodiment the bypass path is enabled approximately simultaneously with disconnecting power from the output port.

REFERENCES:
patent: 4517618 (1985-05-01), Frank
patent: 6473608 (2002-10-01), Lehr et al.
patent: 6643566 (2003-11-01), Lehr et al.
patent: 6803750 (2004-10-01), Zhang
patent: 6853562 (2005-02-01), Zhang
patent: 6928562 (2005-08-01), Cohen et al.
patent: 6952785 (2005-10-01), Diab et al.
patent: 7141958 (2006-11-01), Saitoh
patent: 2005/0132240 (2005-06-01), Stineman et al.
patent: 2006/0049818 (2006-03-01), Montgomery
IEEE 802.3af-2003 Standard—Jun. 18, 2003, IEEE, N.Y.

Affiliated with

Also associated with

Rating

Bypass discharge path for a power sourcing equipment does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bypass discharge path for a power sourcing equipment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bypass discharge path for a power sourcing equipment will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3854536