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Temperature compensated current measurement device

  • US 6,028,426 A
  • Filed: 08/19/1997
  • Issued: 02/22/2000
  • Est. Priority Date: 08/19/1997
  • Status: Expired due to Term
First Claim
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1. An apparatus for measuring current, the apparatus comprising:

  • a) a conductive shunt for developing a voltage drop due to current flow therethrough;

    b) a low noise input network connected to said conductive shunt;

    c) a fixed gain amplifier connected to said low noise input network to amplify said voltage drop to produce a current signal representing current flow through said conductive shunt; and

    d) an attenuator connected to said amplifier to attenuate said current signal, said attenuator including a temperature sensor for sensing temperature of said shunt and connected to said fixed gain amplifier such that said current signal is attenuated by an amount dependent upon temperature of said shunt.

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