Positive voltage converter.

[danial stocks]

forget the extra caps, rect bridges.. configre as 1/2 wave doubler.. if the 
caps are big and the trafo vtg is high, no prob with hum after regs.. I seen 
some commercial synths start with double inside.. doepfer 404 for example, I 
think this has doubler inside from mem.. I used them in many of my own stuff 
with no probs..
Cheers,
Dan


>From: jorgen.bergfors at idg.se
>To: sasami at blaze.net.au, synth-diy at node12b53.a2000.nl
>Subject: Re: Positive voltage converter.
>Date: Tue, 9 Jan 2001 12:27:47 +0100
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> >OR Use a second bridge rectifier off the transformer, but connect it to 
>the
> >transformer through some bipolar capacitors. The rest of the circuit 
>would
> >be pretty much as per a standard regulator.
>
>I don't think you need bipolar capacitors. I'm currently working on a 
>project that uses this approach. And I use ordinary electrolytics.
>I took this part of the circuit from Elektor Summer Circuits 1978, and 
>there is no mention of bipolar capacitors in that mag.
>Any other opinions?
>
>/Jorgen

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