[sdiy] +/- 15v from a wall wart...

[fredw at lmi.net]

http://www.musicfromouterspace.com/analogsynth/WALLWARTSUPPLY/WALLWARTSUPPLY.php

Wall Wart Power Supply (+/9V to +/-15V)

Uses a 9V AC (not DC) wall wart to produce +/1 15V.  It's a bare  
board; you need to populate it yourself.

F.

Quoting Justin Owen <juzowen at googlemail.com>:

> Hey all,
>
> I'm looking for some cheap, simple ways of getting a +/-15 volt   
> supply from a wall wart for a small, portable unit I'm working on.
>
> Has anyone got any advice on the suitability of dual output DC-DC   
> converters like these:
>
> http://www.rapidonline.com/Electrical-Power/Power-Supplies/DC-DC-Converter-ICs/1W-Dual-output-DC-to-DC-converters/72607
>
> Fluctuation from an unregulated DC adapter might be a problem -   
> guess I could back them up with 78XX Vregs?
>
> I know there's a few good schematics out there for supplies running   
> off an AC adapter - but so far I've not had much luck tracking down   
> a cheap 15-18v AC wall wart in the UK - any clues?
>
> Basically I really want to move up to some designs that require a   
> bipolar supply - but I also need the units to be portable and   
> useable with easily accessible power supplies/adapters. Not   
> necessarily after a 'perfect' solution just yet - a reasonably   
> workable one would suffice for the time being.
>
> Thanks much.
>
> J
>
>
>
>
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