Floating battery feed circuit for telephone subscriber line...

Details Floating battery feed circuit for telephone subscriber line... Floating battery feed circuit for telephone subscriber line...

H - Electricity

04

M

379/63

H04M 19/00 (2006.01)

Patent

CA 1201230

FLOATING BATTERY FEED CIRCUIT FOR TELEPHONE SUBSCRIBER LINE INTERFACE ABSTRACT OF THE DISCLOSURE An arrangement for providing a subscriber line with an operating potential. The energy to the line is transferred thereto inductively at a fixed frequency and includes the rectification circuit on the subscriber side of the inductor. The amount of energy transferred to the line is controlled by pulse width. The control pulse width circuit includes a device to decrease the energy transfer above a level at which a subscriber station internal regu- lation would be defeated.

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