Power source regulator for wireline cable system

Details Power source regulator for wireline cable system Power source regulator for wireline cable system

2005-01-11

2005-01-11

Han, Jessica (Department: 2838)

Electricity: power supply or regulation systems

External or operator controlled

Phase controlled switching using electronic tube or a three...

C379S413000

Reexamination Certificate

active

06841984

ABSTRACT:
A system (150) for controlling voltage supplied to a transmission line system. System (150) includes a transmission cable (134) having a characteristic impedance and a load impedance connected at its distal end. A power source (154) is connected to transmission cable (134). Power source (154) is configured to receive a voltage signal input (157) and to drive a source voltage VSbased thereon. A feedback unit (155) is configured to receive the power source current (IS) as an input and further configured to generate a feedback voltage (VF) that varies with IS. A set voltage unit (152) is configured to produce a substantially constant voltage (Vset) and an adder (153) is configured to add the set voltage (Vset) to the feedback voltage to generate the voltage signal (157) that provides the input to power source (154). The feedback unit (155) may include an impedance element (156) comprising a digital signal processor or other suitable circuit that models the short circuit impedance of the transmission line.

REFERENCES:
patent: 5081411 (1992-01-01), Walker
patent: 5237264 (1993-08-01), Moseley et al.
patent: 5530748 (1996-06-01), Ohmori
patent: 6522119 (2003-02-01), Hernandez

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