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Proceedings Paper

The Effect Of Repetition Rate On Electrode Material Performance In High Current Switches
Author(s): A. L. Donaldson; M. Kristiansen
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Paper Abstract

Many applications of high current switches require operation in the burst mode or at high repetition rates. Under these conditions, it has been observed that electrode erosion rates increase signifi-cantly. An analytical solution to the heat conduction equation is discussed which determines the onset of the bulk surface erosion mode as a function of peak current, pulse width, rep-rate and material properties. The solution indicates that materials with lower thermal diffusivities can operate at higher rep-rates before gross melting of the electrode surface occurs. The overall effect of increasing rep-rate is to shift the point of transition on the standard electrode erosion graph to lower values of peak current or charge transfer.

Paper Details

Date Published: 6 April 1988
PDF: 2 pages
Proc. SPIE 0871, Space Structures, Power, and Power Conditioning, (6 April 1988); doi: 10.1117/12.943675
Show Author Affiliations
A. L. Donaldson, Texas Tech University (United States)
M. Kristiansen, Texas Tech University (United States)

Published in SPIE Proceedings Vol. 0871:
Space Structures, Power, and Power Conditioning
Raymond F. Askew, Editor(s)

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