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From: Lasse Langwadt <llc@fonz.dk>
Newsgroups: sci.electronics.design
Subject: Re: 200V at 10mA
Date: Sat, 24 Aug 2024 15:01:03 +0200
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On 8/22/24 11:44, john larkin wrote:
> On Thu, 22 Aug 2024 10:36:27 +0100, piglet <erichpwagner@hotmail.com>
> wrote:
> 
>> 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.
>>
>> 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.
>>
>> UC3843 control chip would be ideal, cheap, reliable, easy to use,
>> multisourced.
>>
>> piglet
> 
> I like the auto-flyback circuit, flyback drive into the center tap of
> a DRQ127. Then maybe a voltage doubler to harvest the p-p swing.
> 
> And LTC3803 rocks.
> 
> https://www.dropbox.com/scl/fi/8jwi35owo41lfmonc8y92/LTC3803.jpg?rlkey=l3thy5h4533sxpd152ve24c26&raw=1
> 


$0.15 for the first 60V, then the rest of the way with doublers

https://jlcpcb.com/partdetail/LegendSi-LGS6302EP/C5280693