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Power source regulator for wireline cable system

  • US 6,522,119 B1
  • Filed: 09/11/2001
  • Issued: 02/18/2003
  • Est. Priority Date: 09/11/2001
  • Status: Expired due to Term
First Claim
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1. A voltage control system (150) comprising:

  • a transmission cable (134) having a characteristic impedance Z0 and a load impedance ZH at a distal end of the cable;

    a power source (154) connected to the transmission cable (134) and configured to receive a voltage signal input (157) and to drive a source voltage VS based thereon;

    a feedback unit (155) configured to receive the current (IS) generated by the power source (154) as an input and further configured to generate a feedback voltage signal based thereon;

    a set voltage unit (152) configured to produce a constant set voltage signal; and

    an adder (153) configured to add the set voltage signal to the feedback voltage signal to generate the voltage signal (157) that provides the input to power source (154).

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