[sdiy] 3PDT

[mark s]

thanks larry, i think i'm going to have to go with a rotary switch because 
the SP3T's are too pricey for me ($13? no thanks)

cheers
mark

At 10:01 PM 5/24/2004, you wrote:
>SP3T switches are indeed available.  They feel like a SPDT with center off,
>but the center off position is not off. These switches actually have 2
>poles.  They switch like this:
>pole 1 (center to top/bottom)
>ON / OFF
>ON / OFF
>OFF /ON
>
>pole 2
>ON / OFF
>OFF / ON
>OFF / ON
>
>They "look" like DPDT switches from the back, but they are not.  You have to
>connect a jumper from the one pole to the other to get 1P3T operation.
>
>See small attached graphic file.
>
>Larry Hendry
>
>
>----- Original Message -----
>From: mark s <djarum11 at mindspring.com>
>To: <synth-diy at dropmix.xs4all.nl>
>Sent: Monday, May 24, 2004 8:41 PM
>Subject: Re: [sdiy] 3PDT
>
>
>ah yes
>
>was thinking of three throws (SP3T etc) but there are only two.
>
>thanks
>m
>
>At 09:07 PM 5/24/2004, you wrote:
> >On Mon, May 24, 2004 at 09:01:28PM -0400, mark s wrote:
> > > hi list
> > >
> > > would a 3PDT on/off/on allow me to select between 3 outputs, or just two
> > > (with the middle position non-conducting) ?
> >
> >3PDT has 3 poles, but two positions.  You're thinking of 2PDT Center Off,
>or
> >2PTT or whatever its called properly with 3 seperate selection
> >points.  Guitars
> >commonly have these although I dont know if you'd find one applicable to
>your
> >application.
> >
> >--
> >  ------------------------------------------------------------------------
> >  - Tom Arnold -       When I was small, I was in love,                  -
> >  - Sysabend   -       In love with everything.                          -
> >  - CareTaker  -       And now there's only you...                       -
> >  --------------         -- Thomas Dolby, "Cloudburst At Shingle Street" -
>
>