Thanks, but that's not exactly what I mean for "clean" ;-)
Thanks also to Rick, I'll give it a chance, but 40mVp-p ripple sounds not
that good... Just FYI: I'm gonna get a certification for the 4-20mA
datalogger I'm building and I'm really scared about CE mark test: it's a
*REAL PAIN* and costs $6000 / shot. :-|

Ale

On Wed, 3 Dec 2003 egnascimento@YAHOO.COM.BR wrote:

> Maxim have a lot of DC-DC converters with this capability.
> Try it if possible.
> I spoke "if possible" because here in Brazil only the MAX232 is reasonable
> easy to find!
>
> Good luck!
>
>
> ----- Original Message -----
> From: "Alessandro Queri" <piclist@TISCALI.IT>
> To: <PICLIST@MITVMA.MIT.EDU>
> Sent: Wednesday, December 03, 2003 11:42 AM
> Subject: [EE:] Dual power supply
>
>
> > Hello folks. I'm looking for a solution to this problem:
> >
> > I have 5v supply (single rail, DC) and I want REALLY CLEAN +/-12v @
> > 50mA. Consider that conversion should not generate noise in 50 KHz+ Band
> > AT ALL!!! Any Idea? Any experience in low freq switching big capacitors?
> > Thanks in advance.
> >
> > Ale
> >
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