Common supply

[Arthur Harrison]

The single, well regulated 9v supply has been a proven
effective solution for powering a least a dozen FX pedals
simultaneously.  Of course, one must be mindful of correct
load polarity!

-Art

-----Original Message-----
From: Christian Hofmann <chris at scp.de>
To: synth-diy at mailhost.bpa.nl <synth-diy at mailhost.bpa.nl>
Date: Wednesday, January 20, 1999 4:04 AM
Subject: Re: Common supply


>On Wed, 20 Jan 1999 00:39:49 -0800
>Irish <irish at eskimo.com> wrote:
>
>> Crowbar circuit?
>
>That's an overvoltage detector that burns a PSU fuse to protect the gear
>connected. I think it's called crowbar because it's a pretty brutal
>circuit, e.g. triggering a thyristor in parallel to PSU output, i.e.
>simply shortening it. Better to blow up a fuse (or even the PSU) than a
>bunch of synths.
>
>Btw, I'm a bit reluctant to replacing a couple of wws by a single PSU.
>All those warts have separate grounds, this doesn't have to be signal
>ground. Worst case would be a device having the wart's + connected to
>signal ground. Even in other cases there could be a ground loop. And then
>there are AC warts as well...
>Call me nuts, but separate wall warts are part of a healthy ground setup.
>
>cu
>Christian
>
>> On Wed, 20 Jan 1999, you wrote:
>> >No, it's a GOOD idea, IMHO!  Put in a crowbar circuit for overvoltage
>> >protection,
>> >so if the big supply goes awry, it won't ruin everything.
>> >
>> >-Art (thawing out from a five-day power outage)
>> >
>> >-----Original Message-----
>> >From: Irish <irish at eskimo.com>
>> >To: DIY <synth-diy at mailhost.bpa.nl>
>> >Date: Sunday, January 17, 1999 7:01 PM
>> >Subject: Common supply
>> >
>> >
>> >>Like everyone else I'm sure, I am amassing this collection of warts on
my
>> >>wall/floor/etc. Any reason I can't get/make a 9V 3A supply and just
wire
>> >>everything to it? (9V because almost everything I have is 9V)
>> >>Is this a Bad Idea?
>> >>
>> >>Thanks,
>> >>Irish
>