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Old 3rd May 2020, 11:23 am   #28
AdrianH
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Join Date: Mar 2020
Location: Blackburn with Darwen, Lancashire, UK.
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Default Re: Advice please on winding an audio transformer.

I am reading a couple or Wolpert articles on transformers, Slowly!

I am wondering if margins are used on windings when using the plastic bobbins, or do the side of the bobbins act as the margins.

Of the couple of small mains transformers I have stripped down to check they are using the full width of the bobbins. OK they are in sections primary is separate to secondary, but when doing an audio transformer in a plastic bobbin would you still have margins?

Last question is there a simple way of determining the material used in the laminations, some are a brown colour some are a clean steel finish?

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