Sujet : Re: CCFL transformer
De : legg (at) *nospam* nospam.magma.ca (legg)
Groupes : sci.electronics.designDate : 25. Apr 2024, 16:52:51
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <66rk2jl35lbgd2tnqc6jjoqsd70ig9d485@4ax.com>
References : 1
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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
Stress between turns is limited by v/n limit of core. It's layer
stress and section stress that you have to deal with.
That's what the multisection bobbin and pancake windings do.
If the CCFL transformer will allow only 1600V, imagine the
precautions required for 3x that stress. I'm not sure you
can avoid vacuum impregnation / potting in anything 'small'.
RL