Input voltage sense circuit in a line powered network element

Details Input voltage sense circuit in a line powered network element Input voltage sense circuit in a line powered network element

2005-11-22

2005-11-22

Tweel, Jr., John (Department: 2636)

Communications: electrical

Condition responsive indicating system

Specific condition

C363S020000, C307S031000

Reexamination Certificate

active

06967585

ABSTRACT:
Methods and systems of monitoring voltage input to network elements are provided. One method includes receiving an input voltage for a line-powered network element, applying the input voltage across a primary winding of a flyback power converter during an on-time of a primary switch, and transferring the input voltage from the primary winding to a secondary winding of the flyback power converter during an off-time of the primary switch. The method further includes sensing the voltage of the secondary winding during the on-time of the primary switch; and drawing minimal current from the flyback power converter.

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