1999•IEEE Transactions on Instrumentation and MeasurementRequires access

Error in the thermoresistive sensor-based feedback measurement configuration due to DC amplifier offset voltage

Raimundo C. S. Freire, G.S. Deep

Abstract

Feedback circuits with thermoresistive sensors have been widely used in the measurement of thermal radiation and fluid flow. In general, the operation of these circuits is explained, assuming an ideal operational amplifier used in the feedback configuration. The effect of the operational amplifier offset voltage on the static performance has been analyzed. The error introduced when used as a measuring instrument, due to input offset voltage, is estimated.

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Available abstract

Key concepts: Input offset voltage, Operational amplifier, Operational amplifier applications, Offset (computer science), Amplifier, Direct-coupled amplifier, Electronic circuit, Op amp integrator