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Methods and apparatus for simulating resistive loads

  • US 8,134,303 B2
  • Filed: 08/09/2007
  • Issued: 03/13/2012
  • Est. Priority Date: 01/05/2007
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • at least one load having a nonlinear or variable current-to-voltage characteristic; and

    a converter circuit coupled to the at least one load and configured such that the apparatus has a substantially linear current-to-voltage characteristic over at least some range of operation,wherein a first current conducted by the apparatus when the apparatus draws power from a power source is independent of a second current conducted by the load; and

    wherein the apparatus has a terminal voltage VT and conducts a terminal current IT when the apparatus draws power from a power source, and wherein the converter circuit is configured such that the apparatus has an effective resistance of between approximately 0.1 (VT/IT) to 10.0(VT/IT) at least at a nominal operating point VT=Vnom in the at least some range of operation.

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