control voltage pedal

[Harry Bissell]

IF you do this trick, make sure you put a current limiting resistor
in series with the power supply / ring terminal connection. If not a
mono 1/4" jack will short your supply.  You might forget one day...

H^) harry

DCMagnuson at aol.com wrote:

> In a message dated 8/12/00 9:38:17 PM Eastern Daylight Time,
> skin_job at hotmail.com writes:
>
> > I recently bought a used Morley expression/volume pedal which, when you
> >  input a 5V signal to the input jack, will operate as a c/v pedal.
> >
> >  I've gotten tired of having to connect a long damned cable from my lfo (or
> >  whatever) to "power" the pedal, and am looking for another means of doing
> >  it.
> >
> >  What I've been looking at was possibly getting a 5v wall wort and setting
> it
> >
> >  up to power the pedal. Anyone done this? I can only find the wall worts
> with
> >
> >  a 3.5mm plug. Will a simple 3.5mm to 1/4in connector work? Will my damned
> >  idea work at all? I have no electronics training, but have put together my
> >  share of kits. Trying to do custom stuff now.
> >
> >  Any help or suggestions on this would be appreciated.
>
> You don't mention what you're trying to connect, so this may or may not be
> plausible in this instnace:  Replace the CV input jack on the gear you're
> trying to control.  Change it from a mono (TS) connector to a stereo (TRS)
> jack.  Find a voltage source inside the gear, and put 5V on the ring
> connection, and connect the input to the tip.
>
> Now with a little creative rewiring on your volume pedal you can use a single
> TRS cable to supply the power and return the CV.
>
> Dave Magnuson