Measuring cell and measuring field comprising measuring...

Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters

Reexamination Certificate

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C324S071500

Reexamination Certificate

active

07084641

ABSTRACT:
A measuring cell for recording an electrical potential of an analyte situated on the measuring cell. The measuring cell has a sensor, a layer arranged above the sensor and electrically insulating the analyte from the sensor, and an amplifier circuit connected to the sensor on a substrate and having an input stage containing a field-effect transistor or a bipolar transistor, the sensor being at least indirectly connected to a control terminal of the field-effect transistor or of the bipolar transistor. An operating point of the amplifier circuit is set by means of a voltage or a current applied at the control terminal of the field-effect transistor or of the bipolar transistor of the input stage of the amplifier circuit.

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