Power Supply Coatings

[Ken Pachkowsky]

Hi Guys, Can someone tell me what is used to coat power supply windings. It appears to look like a dried plastic like glue thats been painted black.

Also, what is the reason for it?

I am asking because some of it has dried out and become brittle on my HRX power supply. Some has chipped off and the windings are bare in a few places. Should I re-coat this with something? If so, what?

Thanks

Ken

[Don C]

Look for some stuff called Glyptal. That stuff won't come off though, so be careful where you put it.

[Ken Pachkowsky]

Thanks for the help. Can you also tell me the reason for its application?

Ken

[Donald]

I believe for electrical insulation and for anti-vibration.