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Rejustor-Based Precision MilliOhm Meter

Authored on: Jun 3, 2008 by J. Yannone

Technical Paper

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This paper discusses how to measure resistance in the range of 0.001 to 10 ohm, in 0.001-ohm increments, with a relatively low-cost design. Key to the project is use of Rejustors to allow use of lower-cost components which are then trimmed to higher precision, including the voltage reference, voltage-to-current (V/I) converter, and difference amplifier.

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