Method and apparatus for reducing power dissipation in dc...

Details Method and apparatus for reducing power dissipation in dc... Method and apparatus for reducing power dissipation in dc...

G - Physics

05

F

G05F 1/46 (2006.01) H02J 1/04 (2006.01) H04B 3/02 (2006.01) H04M 1/738 (2006.01) H04M 1/76 (2006.01) H04M 19/00 (2006.01) H04Q 3/42 (2006.01)

Patent

CA 2250958

A DC termination device particularly adapted for use in a device coupled to a two wire telecommunications system. The termination device controls the tip-to-ring current through the telecommunications device by means of a voltage controlled current source. The control voltage for the voltage controlled current source is provided by digital signal processing of the tip-to-ring voltage such that the tip-to-ring current is linearly proportional to the tip-to-ring voltage when the voltage is below a specified threshold level, but is maintained constant when the tip-to-ring voltage is over the threshold voltage. Preferably, the constant current is the minimum adequate current needed for operation.

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