Current Mirror Potentiostat
First Claim
1. A circuit for measuring an electrical current in an electrochemical cell, the circuit comprising:
- a voltage controller coupled to said electrochemical cell that controls a voltage difference between at least two electrode of said electrochemical cell;
a current copier that produces a mirrored current of said electrical current, wherein the current copier is coupled to at least one of said voltage controller and said electrochemical cell; and
a current measurer coupled to said current copier that measures said mirrored current.
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Accused Products
Abstract
Systems, methods, and apparatuses for measuring current flow in an electrochemical cell are disclosed. A system includes a circuit configured to output a mirrored value of an electrical current flowing through an electrochemical cell. The system may also include a voltage controller, coupled to one or more electrodes of the electrochemical cell, for controlling the voltage difference between at least two electrodes of the electrochemical cell. The system may further include a current replication circuit coupled to the voltage controller or the electrochemical cell. The current replication circuit generates a mirrored current of the electrical current flowing in the electrochemical cell. The replicated current may be measured or processed with different circuits and methods to output the current flowing through the electrochemical cell.
31 Citations
20 Claims
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1. A circuit for measuring an electrical current in an electrochemical cell, the circuit comprising:
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a voltage controller coupled to said electrochemical cell that controls a voltage difference between at least two electrode of said electrochemical cell; a current copier that produces a mirrored current of said electrical current, wherein the current copier is coupled to at least one of said voltage controller and said electrochemical cell; and a current measurer coupled to said current copier that measures said mirrored current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for measuring current in an electrochemical cell, the method comprising:
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applying a constant potential to a working electrode and a reference electrode of said electrochemical cell to induce an electrical current through said electrochemical cell; replicating said electrical current to produce a mirrored electrical current; and measuring said mirrored electrical current. - View Dependent Claims (14, 15, 16)
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17. A potentiostat, comprising:
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means for controlling voltage coupled to an electrochemical cell that generates an electrical current through said electrochemical cell; and means for generating a mirrored current of said electrical current for measurement without disturbing said electrical current. - View Dependent Claims (18, 19, 20)
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Specification