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DOE OSTI · 1848275

Precision current regulator for NMR electromagnets

Conradi, Mark S.·Fabich, Hilary T.
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Abstract

When using electromagnets or non-persistent superconducting magnets, the field stability can be directly proportional to the current stability. We present in this report a simple design for a current regulator based upon a high-precision, dc-dc fluxgate transformer. The output current and NMR frequency are stabilized by about a factor of 50, over times of order one hour. The method can be applied to essentially any current supply.

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59 BASIC BIOLOGICAL SCIENCES71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICSBiochemistry & Molecular BiologyCurrent regulationCurrent stabilityDc-dc transformerField regulationField stabilityFluxgatePhysicsSpectroscopy

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Conradi, Mark S., Fabich, Hilary T.. 2020-09-19. Precision current regulator for NMR electromagnets. https://doi.org/10.1016/j.jmr.2020.106830

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