THE ACTIVE DC BRIDGE

Boleslaw Tync

Abstract

The paper presents an original circuit of a resistance bridge balanced by means of an active element whose resistance is incorporated into one of the bridge's branches. In this solution the bridge balance condition includes the quotient of products of resistances in the bridge's appropriate arms being equal to the quotient of corresponding time-intervals. This facilitates resistance measurements employing a digital method without the use of an a/d converter.

Keywords

balanced bridge, precise resistance measurements, digital resistance measurements

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IMEKO-WC-2015-TC4-157.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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