Design and experimental implementation of a low frequency pulsed magnetic field generator

Prabhu Gaunkar, Neelam, Selvaraj, Jayaprakash, Bauer, Leif, Mina, Mani, Weber, Robert and Jiles, David 2017. Design and experimental implementation of a low frequency pulsed magnetic field generator. IEEE Transactions on Magnetics 53 , 6501004. 10.1109/TMAG.2017.2704081

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Abstract

Pulsed magnetic field generation is a critical aspect of all nuclear magnetic resonance (NMR) experiments. In this paper, a novel design for a low field, low frequency (less than 5 MHz), pulsed magnetic field generation circuit suited for unilateral NMR applications is presented. A pulsed sinusoidal current is generated at an inductive load connected to an FET-based switch. The inductive load resonates at a frequency of approximately 2 MHz, which is also the precession frequency of 1H protons in an external magnetic flux density of 500 G. The designed circuit can be tuned to operate at resonant frequencies of other chemical species as well. In this paper, the design parameters and operation of the prototype pulsed field generator will be discussed.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Engineering
Publisher:	Institute of Electrical and Electronics Engineers
ISSN:	0018-9464
Date of First Compliant Deposit:	20 November 2025
Last Modified:	20 Nov 2025 11:15
URI:	https://orca.cardiff.ac.uk/id/eprint/182530

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