AW: [sdiy] freq generator and lab power supply

[Scott Bernardi]

I wouldn't recommend a computer power supply, because it would be a switcher which
has all kinds of high frequency  noise on it.
www.mjpa.com iis offering a great deal on a fixed +/-15v linear supply.
You could always make one using the LM317 and LM337 adjustable regulators. Use a
potentiometer in place of the gain setting resistor and you'll have a regulated
linear supply that is continuously variable from 1.25v to 15v.

Ullrich Peter wrote:

> Hi!
>
> >during all this DIY-ing I realized I still don't have a
> >decent symmetric power supply for my breadbording experiments. I'm using
> >this little DC wall wart that outputs +6, +9, +12 etc. Can anyone
> >recommend an affordable power supply with voltages like
> >+3,-3,+5,-5,+12,-12,+15,-15 etc?
> >a DIY power supply might also be an option ...
>
> You could use an old PC power supply that deliver +5V and +12V / -12V...
>
> Ciao
> Peter
>
>         \|/
>        (o o)
> --oOOO--(_)--OOOo------------------------------------------------------
>                    Ing. Peter Ullrich   mailto:peter.ullrich at kapsch.net
>                    Homepage: www.ullrich.at.tt , http://come.to/ullrich
>                    As of 1st of February there are new numbers:
>                    Phone: +43 (0)50 811 2265   Fax: +43 (0)-50 811 2209
>                    eFax:  +43 (0)50 811 992265
>    .oooO           Hardware & Software Developer /  Electronic Musician
>    (   )   Oooo.   Kapsch TrafficCom AG                 Vienna / Austria
>     \ (    (   )   http://www.kapsch-trafficcom.com/
> -----\_)----) /--------------------------------------------------------
>            (_/
>
> This e-mail and any attachment and the included information are confidential,
> protected by copyright and intended solely for the use of the named
> recipient(s). If you are not the named recipient any disclosure, copying,
> distribution or retention of this e-mail is prohibited and may be unlawful. If
> you are not the intended recipient, please inform us immediately, delete this
> e-mail and all attachments from your system, and refrain from taking any other
> action in reliance to this e-mail.