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Old 29th July 2009, 04:24 AM   #1
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Default Toroid transformer cover?

Anyone know where I can buy toroid transformer covers? It's the one that looks like metal can.

Thanks.
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Old 29th July 2009, 04:48 AM   #2
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I have no idea what they cost but they have std sizes listed...

http://www.deepdrawnenclosures.com/s...und_cases.html

another:

http://hudson.thomasnet.com/viewitem...und?&forward=1
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Old 29th July 2009, 04:49 AM   #3
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Try dollar stores in the pots and pans section. You can find some very attractive covers in those stores. I found some stainless drawn drinking mugs that work nicely as covers for some toroids I have after removing the handles.
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Old 29th July 2009, 04:58 AM   #4
Enzo is offline Enzo  United States
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Be careful not to complete a circuit with the metal parts. For example in a standard flat rack chassis, if you mount a toroid on the floor panel, and run a steel bolt through the center, if that steel bolt contacts the top panel, it completes a "turn" through the toroid. A SHORTED turn.

So one would use a nylon mounting bolt or make sure a steel bolt doesn;t contact the top panel. If you use a metal cover, take the same precautions. Either the cover must have an insulator between the floor and the cover, or the mounting screw through the center must be plastic, or insulated with plastic shoulder washers, or embed a nut in epoxy in the center hole, or something. Whatever method you use, you cannot make a complete metal path through the center and back to the other end
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Old 29th July 2009, 04:33 PM   #5
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rcavictim has the perfect answer:
This small saucepan in pic nicely fits over the toroid. Cut it neatly with a disk or patience with a hacksaw.

richy
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File Type: jpg toroid pan 001.jpg (57.5 KB, 893 views)
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Old 30th July 2009, 01:24 AM   #6
Matt BH is offline Matt BH  United Kingdom
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I found a couple of stainless kitchen things in the local supermarket. I guess I looked a bit weird walking about with a vernier in my hand but hey who cares.
I cut them down, not easy and made a spot welder to weld on some studs.
Cheers Matt.
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Old 30th July 2009, 01:30 AM   #7
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I like tuna cans.
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Old 30th July 2009, 02:41 AM   #8
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Lots of beautiful stainless things can be had inexpensively from east Indian stores
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Old 30th July 2009, 02:58 AM   #9
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I don't know about east Indean stores, but we have Ross Dress for Less here. One time commercial tube amps looked all the same like they were made with pots bought in Ross.
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Old 30th July 2009, 03:19 AM   #10
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PVC pipes cut to size work very well for lots of reasons such as the different dimensions (if you're using different size transformers), available covers etc.. Some need some sanding before you paint them.

Just a thought... Good luck!
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