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Thermal instability of electrolytic capacitor bank used for gas puff valve

Bellan, P. M. (2002) Thermal instability of electrolytic capacitor bank used for gas puff valve. Review of Scientific Instruments, 73 (8). pp. 2900-2905. ISSN 0034-6748. http://resolver.caltech.edu/CaltechAUTHORS:BELrsi02

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Abstract

It is shown that self-heating of electrolytic capacitors causes the output current of a capacitor bank to increase with successive shots even though the charge voltage is held constant. Self heating of only 10 °C can cause a near tripling in the gas output of the gas puffing valves commonly used in spheromak research. By using metallized polypropylene film capacitors instead of electrolytic capacitors the reproducibility is substantially improved (the shot-to-shot variation in gas output is reduced to be <0.5%).


Item Type:Article
Additional Information:©2002 American Institute of Physics. (Received 12 March 2002; accepted for publication 15 April 2002) The author thanks F.C. Cosso and D.D. Felt for their assistance in constructing the various versions of the capacitor bank. This work was supported by U.S. DOE Grant No. DE-FG03-98ER54461.
Subject Keywords:electrolytic capacitors, plasma toroidal confinement, valves, pulsed power supplies, plasma production
Record Number:CaltechAUTHORS:BELrsi02
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:BELrsi02
Alternative URL:http://dx.doi.org/10.1063/1.1488677
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9326
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:13 Dec 2007
Last Modified:26 Dec 2012 09:47

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