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N. A. Lukin, L. S. Rubin

A PRECISION LOW-FREQUENCY ANALOG-TO-DIGITAL CONVERTER FOR ADVANCED SYSTEMS OF TECHNICAL DIAGNOSTICS AND NONDESTRUCTIVE TESTING

DOI: 10.17804/2410-9908.2020.5.006-016

The main results of the development of a precision low-current meter based on a nonlinear ADC are presented. It is shown that the application of the method of nonlinear analog-to-digital conversion and a controlled voltage level at the non-inverting input of an integrating operational amplifier allows both high sensitivity and a wide dynamic range with a small spread of output codes. The use of the laboratory sample of the meter for cyclic tensile testing of steel specimens is described.

Keywords: nonlinear analog-to-digital converter, nanoampere current meter, integrating operational amplifier, magnetostriction measurement

References:

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Article reference

Lukin N. A., Rubin L. S. A Precision Low-Frequency Analog-to-Digital Converter for Advanced Systems of Technical Diagnostics and Nondestructive Testing // Diagnostics, Resource and Mechanics of materials and structures. - 2020. - Iss. 5. - P. 6-16. -
DOI: 10.17804/2410-9908.2020.5.006-016. -
URL: http://eng.dream-journal.org/issues/2020-5/2020-5_281.html
(accessed: 12/02/2024).

 

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