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Old 3rd May 2020, 8:50 pm   #32
AdrianH
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Join Date: Mar 2020
Location: Blackburn with Darwen, Lancashire, UK.
Posts: 1,567
Default Re: Advice please on winding an audio transformer.

I am slowly building up a few different bits to have another go at it, hopefully soon some more wire will arrive so I should have some basics,
34 AWG 0.16mm
36 SWG 0.19mm
26 SWG 0.45mm
22 SWG 0.71mm all some dual polyester grade 2 wire
I have some polyester high temp tape used for powder coating which is 3 thou think, I used that between primary and secondary windings when I did the audio transformer.

I should ask about putting wire on every layer, but when I stripped the old bobbins down, non of them had any interlayer tape and they were running 240V ac.

It has not been an issue yet on my audio transformer I guess because of the lowish voltages I am using, but I wonder at what voltage the coatings would break down?

OK kalee20 on the cheeks being forced open, I admit I shaved a piece of wood down to fit inside the bobbin with an M10 bolt going through, spin the bolt type thing, I have recently been making a couple of new cones for the new winder. It is all a learning curve as it is for me on valves in general, but it is fun during these times.

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