Method of and circuit for ohmmeter calibration

Details Method of and circuit for ohmmeter calibration Method of and circuit for ohmmeter calibration

G - Physics

01

R

324/4

G01R 27/02 (2006.01) G01R 35/00 (2006.01)

Patent

CA 1283445

METHOD OF AND CIRCUIT FOR OHMMETER CALIBRATION Abstract of the Disclosure The calibrator of an ohmmeter is compensated to eliminate any error as a result of the resistance of leads interconnecting terminals of the ohmmeter and a reference resistance to which the ohmmeter is connected during calibration. In accordance with one aspect of the invention, ohmmeter current flowing through a buffer amplifier biased by a floating power supply bypasses the ohmmeter leads. In accordance with another aspect, a current equal in magnitude but opposite in direction to the ohmmeter current is applied to the leads.

572865

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