[sdiy] 3PDT

[Peter Grenader]

That switch Larry mentioned is a C&K 7211.  There's also an NKK equiv that's
about half the cost.  Go to mouser - I believe they carry both.  Do a search
on C&K 7211 and the NKK will pop up as a second line item.  I actually
prefer the action of the NKK more - I've bought both..

hope this helps,

Peter


J. Larry Hendry 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" -
> 
> 
>