 Brushed rotary spark gap
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LD LANGER
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Wed Apr 20 2011, 08:44PM
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Registered Member #3824
Joined: Sun Apr 10 2011, 08:29PM
Location: Edmonton, Alberta, Canada
Posts: 54
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Has anyone tried using brushes on the stationary electrodes for a rotary spark gap? I was thinking maybe using light copper ribbon for brushes on the two stationary electrodes or something equivalent that can take the arc. I guess this is just intuition but to me it seems like you can decrease the spark gap loss if for at least a percentage of the conduction period was a direct connection.
This scenario would only be beneficial if power loss is linear (ie. if power loss is minimal once the arc is struck then this would be deemed irrelevant).
Daniel
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James
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Registered Member #3610
Joined: Thu Jan 13 2011, 03:29AM
Location: Seattle, WA
Posts: 506
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I think you would have problems with the brushes deteriorating really quickly. It's hard to transfer a lot of current through brushes, this is one reason cars switched to alternators since the brushes then only have to carry the rotor excitation current.
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