[sdiy] when the going gets weird the weird turn pro (battery power)

[Julian]

http://www.port23.co.uk/synthdiy/a100/with_606.jpg


is what i did (you can see the couple of sealed lead acids lurking in the 
back of the case).  I havent used that setup for, well, years, but i cant 
remember there being issues other than the standard doepfer related ones 
(noisy lfo leds etc)

Those batteries are smaller than those you are proposing, but they worked. 
I cant see any logical reason that there would be any issues with your 
suggestions, but im certainly not one of the smart ones about here : )

Julian




>
> Hallo,
>
> Last week I experienced a PSU failure and am wondering if my wiring is to
> blame?  The unhappy PSU has two +12 / G outputs.  I bridge one of the +12v
> to the ground of the other +12 output and then used the bridged connection
> as ground giving +12 and -12 at both ends with ground on the bridge. This
> worked fine for maybe one month.  Anyway, the supply is no longer
> supplying the necessary current to be useful, however the voltage is
> still there...
>
> Is connecting single sided supplies in series like this and then tapping
> the center as ground a bad recipe?  I'm wondering if in a pinch I could
> use 2 car batteries (fused of course) to get +/-12 and ground?
>
> car batteries at 80amp hours minimum is not bad and i could do 5 or 6
> hours of modular playing in the park without needing to recharge or is
> there something wrong with this picture?
>
> -a
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