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Registered Member #2845
Joined: Mon May 03 2010, 06:40AM
Location:
Posts: 12
Hi Just joined the forum and am working on building a Minibrute kit, which is my first Tesla coil. Just got it soldered together and it passed the smoke test.
I have a question about the enclosure: The coil is going on a piece of metal artwork, and it would be much more optimal as far as aesthetics and construction if the housing at the base was metal. Assuming good precautions against shorting the electronics to the housing were taken, maybe even with some plexiglass under the high voltage boards, could there be any other issues with this?
One other issue I thought of might be the primary causing inductance in the metal housing and heating it up/wasting power, so I guess i'd just cut a gap(like a very thin pie slice) into the housing from the center to the outside and fill it with something nonconductive.
Originally posted in the minibrute thread with this question, but I guess it's more of a general discussion thing, sorry if i double posted. Cheers! Ray
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Ray, I'm not sure if i like the idea of using a metal enclosure. The primary coil sits very close to the top of the enclosure and i would worry about the primary arcing to ground.
Also, i'm not sure what effect (if any) the magnetic field would have on a metallic plate such as that. I know you would want to avoid a circular ring as it acts like a shorted turn. So i'm not sure if a flat plate would have a similar effect.
As far as the primary proximity issue, if you extended everything by maybe an inch (primary supports, secondary, etc...) that would be better.
BTW, please be sure to read my addendum PDF on my miniBrute ordering page. It covers several errors / issues / corrections.
Registered Member #2845
Joined: Mon May 03 2010, 06:40AM
Location:
Posts: 12
Yeah, gotcha on the primary arcing to ground. Maybe what i'll do is have a plexi top but metal sides with a gap in them so there's no ring being made. The base really wants to be round/conical for the art piece, and i think the metal sides/plexi top would work with that design, and still be safe?
Yeah read the addendum and the various gotchas in the minibrute thread, which i'm glad I did because I probably would have missed C101!
Registered Member #2845
Joined: Mon May 03 2010, 06:40AM
Location:
Posts: 12
I will! the art piece will actually have 3 of them once it's done, and people at events where we show it can play music on them. I really want to make a vacuum tube therimin to play on them!
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Metal enclosure for drsstc electronics?
