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On 2024-04-25, legg <legg@nospam.magma.ca> 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
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'.
I see trandformers claimed for 15kV with 6 sections of loose wound
magnet wire. This is however Chinese consumer marketing kilovolts.
>
https://www.aliexpress.com/item/1005002225061453.html
>
Given the ~2mm spark gap it suggests something less than 15kV
Date | Sujet | # | Auteur | |
24 Apr 24 | CCFL transformer | 46 | Klaus Vestergaard Kragelund | |
24 Apr 24 | Re: CCFL transformer | 14 | John Larkin | |
24 Apr 24 | Re: CCFL transformer | 12 | Bill Sloman | |
25 Apr 24 | Re: CCFL transformer | 8 | Bill Sloman | |
25 Apr 24 | Re: CCFL transformer | 1 | Klaus Vestergaard Kragelund | |
27 Apr 24 | Re: CCFL transformer | 6 | Klaus Vestergaard Kragelund | |
27 Apr 24 | Re: CCFL transformer | 2 | John Larkin | |
27 Apr 24 | Re: CCFL transformer | 1 | Bill Sloman | |
27 Apr 24 | Re: CCFL transformer | 3 | Bill Sloman | |
27 Apr 24 | Re: CCFL transformer | 2 | Klaus Vestergaard Kragelund | |
28 Apr 24 | Re: CCFL transformer | 1 | Bill Sloman | |
25 Apr 24 | Re: CCFL transformer | 3 | Klaus Vestergaard Kragelund | |
25 Apr 24 | Re: CCFL transformer | 1 | Bill Sloman | |
27 Apr 24 | Re: CCFL transformer | 1 | John Larkin | |
24 Apr 24 | Re: CCFL transformer | 1 | Arie de Muijnck | |
24 Apr 24 | Re: CCFL transformer | 9 | legg | |
24 Apr 24 | Re: CCFL transformer | 7 | John Larkin | |
25 Apr 24 | Re: CCFL transformer | 6 | Klaus Vestergaard Kragelund | |
25 Apr 24 | Re: CCFL transformer | 5 | John Larkin | |
25 Apr 24 | Re: CCFL transformer | 4 | Klaus Vestergaard Kragelund | |
25 Apr 24 | Re: CCFL transformer | 3 | John Larkin | |
26 Apr 24 | Re: CCFL transformer | 2 | Klaus Vestergaard Kragelund | |
26 Apr 24 | Re: CCFL transformer | 1 | John Larkin | |
25 Apr 24 | Re: CCFL transformer | 1 | Klaus Vestergaard Kragelund | |
24 Apr 24 | Re: CCFL transformer | 2 | Joe Gwinn | |
25 Apr 24 | Re: CCFL transformer | 1 | Klaus Vestergaard Kragelund | |
24 Apr 24 | Re: CCFL transformer | 1 | Martin Rid | |
25 Apr 24 | Re: CCFL transformer | 17 | legg | |
25 Apr 24 | Re: CCFL transformer | 11 | Bill Sloman | |
25 Apr 24 | Re: CCFL transformer | 1 | Klaus Vestergaard Kragelund | |
26 Apr 24 | Re: CCFL transformer | 8 | legg | |
26 Apr 24 | Re: CCFL transformer | 6 | Bill Sloman | |
27 Apr 24 | Re: CCFL transformer | 5 | legg | |
27 Apr 24 | Re: CCFL transformer | 3 | Klaus Vestergaard Kragelund | |
28 Apr 24 | Re: CCFL transformer | 2 | John Larkin | |
28 Apr 24 | Re: CCFL transformer | 1 | Bill Sloman | |
28 Apr 24 | Re: CCFL transformer | 1 | Bill Sloman | |
27 Apr 24 | Re: CCFL transformer | 1 | legg | |
26 Apr 24 | Re: CCFL transformer | 1 | legg | |
25 Apr 24 | Re: CCFL transformer | 2 | Klaus Vestergaard Kragelund | |
26 Apr 24 | Re: CCFL transformer | 1 | legg | |
25 Apr 24 | Re: CCFL transformer | 2 | John Larkin | |
26 Apr 24 | Re: CCFL transformer | 1 | Bill Sloman | |
26 Apr 24 | Re: CCFL transformer | 1 | legg | |
1 May 24 | Re: CCFL transformer | 2 | Mike Monett VE3BTI | |
2 May 24 | Re: CCFL transformer | 1 | Klaus Vestergaard Kragelund |
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