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From: Klaus Vestergaard Kragelund <klauskvik@hotmail.com>
Newsgroups: sci.electronics.design
Subject: Re: CCFL transformer
Date: Thu, 25 Apr 2024 10:06:07 +0200
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On 24-04-2024 15:37, legg wrote:
> On Wed, 24 Apr 2024 01:57:36 +0200, Klaus Vestergaard Kragelund
> <klauskvik@hotmail.com> wrote:
> 
>> Hi
>>
>> I need a low distributed capacitance winding transformer, for a HV
>> stepup function (3.5kV)
>>
>> I am zeroing in on similar concept as CCFL transformers with
>> sectionalized bobbin.
>>
>> For example:
>>
>> https://www.coilcraft.com/en-us/products/transformers/power-transformers/ccfl-transformers/fl/
>>
>> Possibly using Triple Insulated Wire to create some distance between the
>> individual turns.
>>
>> Not many sells CCFLs these days.
>>
>> Guess I will keep it alive....
>>
>> Regards
>>
>> Klaus
> 
> When there are a lot of turns, 3xFEP is not the way to
> go. Too bulky. The three layers is basically a trick to
> avoid creepage requirements for pri-sec safety. That's
> not what you need here.
> 
> Anything off the shelf will be a great time saver.
> 

Yes, probably better to just wind it with distance between the turns