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From: "Edward Rawde" <invalid@invalid.invalid>
Newsgroups: sci.electronics.design
Subject: Re: 200V at 10mA
Date: Thu, 22 Aug 2024 11:20:00 -0400
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"piglet" <erichpwagner@hotmail.com> wrote in message news:va70qr$coo9$1@dont-email.me...
> On 21/08/2024 17:39, Edward Rawde wrote:
>> SYMATTR InstName C5
>
> If you want to stick with that way-over-complex design you could look into versapac 6 windings coupled inductors.

Thanks piglet I will.

Perhaps I should have mentioned that it's not for volume production and I already have suitable parts except a transformer.
Having to buy chips would cost more and there's no education in wondering what's inside a chip.

>
> I would not even try that circuit. Better to redesign to use either a single inductor or a dual coupled inductor like DRQ127 
> series. if necessary follow with a cockcroft-walton multiplying rectifier.

I'm sure there are plenty of ways to turn 12V into 200V.

>
> UC3843 control chip would be ideal, cheap, reliable, easy to use, multisourced.
>
> piglet
>