Sujet : Re: CCFL transformer
De : klauskvik (at) *nospam* hotmail.com (Klaus Vestergaard Kragelund)
Groupes : sci.electronics.designDate : 25. Apr 2024, 09:56:21
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <v0d2b5$2stdr$1@dont-email.me>
References : 1 2 3
User-Agent : Mozilla Thunderbird
On 24-04-2024 07:10, Bill Sloman wrote:
On 24/04/2024 12:25 pm, John Larkin 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
step-up function (3.5kV)
>
I am zeroing in on similar concept as CCFL transformers with
sectionalized bobbin.
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For example:
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https://www.coilcraft.com/en-us/products/transformers/power-transformers/ccfl-transformers/fl/
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Possibly using Triple Insulated Wire to create some distance between the
individual turns.
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Not many sells CCFLs these days.
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Guess I will keep it alive....
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Can you use a C-W multiplier?
>
For low current, you can do resonant tricks too.
It's easier to use a voltage doubler or tripler that it is to find a multi-section former off-the shelf. The occasional high voltage power supply that I've dismantled clearly used proprietary formers, as do the Coilcraft parts
I am using it for pulse generation, so cannot use a capacitive doubler
I suppose one could use self-bonding wire to make a series of self-supporting pancake windings, but I've never heard of anybody doing it.
Yeah, sounds like difficult to do in production