Adrian,
You want to make sure you hold the magnet wire taught when rewinding it. Then
the end connections will hold it pretty much in place. Afterwards, get a spray
can of polyurathane varnish and spray on an even coat. About 2-3 coats would be
good for thickness, just allow it to air dry between coats. You dont want
anything thicker than this because of heat dissapation. Anything that can trap
heat into the wire derates its power capability. Make sure to use a wire gage
to see what size wire the choke was originally wound with.
Best,
Will
>
> Hi all
> We have an LK 500 Amplifier (the pair of 3-500Z's model) that started to
> spark and arc quite badly last weekend when we tested it ready for IOTA.
>
> We've had a look at the amp, and it appears that the varnish on the anode
> choke has come off, and there are signs of tracking.
>
> Given that it'll need re-winding, what you boys suggest I coat the choke in,
> to stop it from unravelling ?
>
> Any other comments ?
>
> Adrian (M1LCR)
>
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