[sdiy] using +/-15V supply with +/-12V gear

[matt wilson]

"jh." wrote:

> > i've just taken delivery of an analogue systems joystick; its +/-12v.
> > my only
> > power supply is a blacet which is +/-15V. should i not hook them up?
> > i'm able to successfully drop the +15 down to +12 with a voltage
> > regulator
> > chip if i need to, but the negative voltage is another story.  thanks
> > for the help.
>
> There are negative regulators as well. Cheapest way to do it is using
> a 78L12 and 79L12 pair. (Don't forget the capacitors and backward
> diodes - get a data sheet from www.national.com)
>

thx for all the help on this very simple issue. it works fine off +/-15V
apparently;
the joystick is only supposed to output +/-5V, but i'm getting +/-12V with
the trimmers
wide open! it
doesn't seem to bother my serge modules, which like that kind of voltage.

thx again,

matt


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matt wilson is odyssey sounds
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