[sdiy] on/on/on DPDT to 3 position switch

[Elby Designs - Laurie Biddulph]

Only some switches operate this way.
Most switches toggle both pairs of contacts in parallel giving you a conventional
2-way switch with centre-off.

Switches like the C&K7211 have a special arrangement that toggles the switch
contacts ina different manne rsulting in set of contacts always being closed when
in the centre-position. This is how you are able to get a 3-way action from the
switch.

Best regards
Laurie Biddulph
www.elby-designs.com

On Thu Dec 18 14:16 , "John Luciani"  sent:

>On Wed, Dec 17, 2008 at 6:37 PM, Derek Holzer derek at umatic.nl> wrote:
>> Hi, thanks for the information. The main question was whether any on-on-on
>> switch could be wired in this way, and not just the C&K7211. Can I assume
>> this is true, or are there different types of on-on-on switches?
>
>I have never heard of other types of on-on-on switches. All of the ones that I
>have seen operate like the 7211.
>
>(* jcl *)
>
>>
>> best!
>> Derek
>>
>> megaohm wrote:
>>>
>>> That is no trick. The C&K7211 needs to be wired to function as a 3
>>> position switch. The info in on their site under "technical data" pdf.
>>>
>>> NKK also make these and others do, too.
>>>
>>> They must be:
>>>
>>> ON/ON/ON
>>>
>>> not
>>>
>>> ON/OFF/ON
>>>
>>>
>>> p.
>>>
>>> On Wed, Dec 17, 2008 at 3:42 PM, Derek Holzer derek at umatic.nl
>>> derek at umatic.nl','','','')">derek at umatic.nl>> wrote:
>>>
>>>    I've read that the C&K 7211 switches can be converted into a 3
>>>    position (triple throw?) switch:
>>>
>>>    http://www.simple-answer.com/3_pos_switch.jpg
>>>
>>>    and that this wiring trick could work with other on/on/on DPDT
>>>    switches, like this one from Banzai:
>>>
>>>
>>> 
http://www.banzaieffects.com/MEC-M-80008-C-chrome-Toggle-on-on-on-DPDT-pr-13719.html
>>>
>>>    Can anyone confirm or deny this rumor?
>>>    --    Derek Holzer
>>>    http://www.umatic.nl
>>>    http://blog.myspace.com/macumbista
>>>    _______________________________________________
>>>    Synth-diy mailing list
>>>    Synth-diy at dropmix.xs4all.nl
Synth-diy at dropmix.xs4all.nl','','','')">Synth-diy at dropmix.xs4all.nl>
>>>    http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>>>
>>>
>>
>> --
>> derek holzer ::: http://www.umatic.nl ::: http://blog.myspace.com/macumbista
>> ---Oblique Strategy # 138:
>> "Retrace your steps"
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>>
>
>
>
>-- 
>http://www.luciani.org
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