Re: Power Supply Design
- From: "J.Koning" <mynamespacedbydots@xxxxxxxxx>
- Date: Tue, 24 Jan 2006 09:29:46 +0100
"Brian" <bcolenj@xxxxxxxxx> wrote in message
news:1138088419.099851.74690@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Hello, I have a need of a 300-350VDC Power Supply. I was wondering what
> the cheapest design solution would be. The power supply will be used
> to charge large capacitors. (I am tired of using a hacked disposable
> camera circuit board which takes forever to charge up the caps.)
> Winding my own transformer is possible although I dont look forward to
> 1000s of turns if thats what it will involve.
>
> Thanks,
> Brian
>From your post I get the feeling it's a one off.
The solution below may not be the cheapest design for multiple
supplies but for a one off the junk box could provide the parts.
Take 3 transformers f.e. 110V/24V with f.e. a 10VA rating .
Serialize the primaries and parallel the secondaries.
Watch out for correct phase.
Take a fourth transformer 110/24V with at least 3x10VA rating.
Connect the lot back-to-back, i.e. connect the 24V winding of
the no.4 transformer to the paralled 24V windings of the triple.
Mains input is on no. 4, a 330V output on the serialized triple.
Give safety a thought, use split bobbin transformers.
Rgds,
Jan.
.
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