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Old 20th October 2012, 10:02 AM   #1
diyAudio Member
Join Date: Jan 2012
Location: Bloemfontein
Default toroidal transformer

Gooday all,
I need some help here from the knollegeable people plse !
I got a toroidal transformer and the plastic coating covering the transformer has been removed. I have tested it and it still ok. Some of the secondary windings is a bit loose and I think they might buzz or vibrate when it has to deliver current. How do I fix that ? Paint the transformer with varnish or can I use resin( used for cable joints) to cover it. I' m just afraid that the resin might keep the heat inside and cause it overheat. Any suggestions plse.

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Old 20th October 2012, 11:17 AM   #2
AndrewT is online now AndrewT  Scotland
diyAudio Member
Join Date: Jul 2004
Location: Scottish Borders
dip it in electrical varnish let all the bubbles come out
take it out to dry.
repeat a few times until the whole transformer is completely full of dried varnish.

To do this properly you should use a vac/vac impregnation procedure, but that requires resources.

Search for similar topics and you will find lots of suggestions.
regards Andrew T.
Sent from my desktop computer using a keyboard
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Old 20th October 2012, 12:04 PM   #3
diyAudio Member
Join Date: Jan 2012
Location: Bloemfontein
Hallo AndrewT,
Will search a bit more.

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