Presumably with an AC mains input....  my choice would be a 18 - 0 - 18
secondary transformer, a bridge rectifier, smoothing caps, and a 7815 & 7915
regulator pair with "wraparound" transistors to increase the current
handling (the ICs are only good for about an Amp).  You can get 3 Amp
versions of the 15 volt regulators, but they tend to be quite expensive.

Chris

----- Original Message -----
From: "A.J. Tufgar" <tufgaraj@MUSS.CIS.MCMASTER.CA>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Thursday, November 28, 2002 4:59 AM
Subject: [EE]: 15, -15V @~3A PSU.


> Hey all,
>         I'm trying to design a switching or non-switching PSU that will
> output -15V and 15V @ 3A.  I tried national semi's online PSU designer
> and had limited success.  Same with a google search.  Can anyone point
> me in the right direction as to where I could find such a design?
>
> Thanks in Advance,
> Aaron
>
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