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Biosensor, biosensor chip and biosensor device

  • US 9,074,999 B2
  • Filed: 10/08/2014
  • Issued: 07/07/2015
  • Est. Priority Date: 07/02/2002
  • Status: Expired due to Fees
First Claim
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1. A biosensor device, comprising:

  • a biosensor, comprising;

    a working electrode;

    a counter electrode;

    a working electrode terminal;

    a counter electrode terminal; and

    a reference terminal;

    the working electrode being connected to the working electrode terminal; and

    the counter electrode being connected to the counter electrode terminal and to the reference terminal; and

    a measurement circuit configured to be connected to the biosensor for performing an assay of a fluid to determine the concentration of a substance in the fluid, the measurement circuit comprising;

    a first voltage application section coupled to the working electrode terminal; and

    a second voltage application section coupled to the counter electrode terminal and to the reference terminal;

    wherein the second voltage application section uses a voltage at the reference terminal to control a voltage applied to the counter electrode terminal.

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