[sdiy] switch question

Scott Gravenhorst music.maker at gte.net
Wed Dec 6 00:52:04 CET 2006


music.maker at gte.net wrote:
>rude66 <rude66 at gmail.com> wrote:
>>i figured something like that, i've had these kind of 'multiples'
>>before and that's why i referred to it as a 'spst'..
>>
>>okay, in the meantime i've learned that these things will most likely
>>not work, so it's time for plan b.. i've located some spdt's that
>>won't look as good, but i guess they'll have to do..;-)
>>
>
>Try this: the pins appear to be organized in pairs. If it were me 
>designing it, I'd say that each pair is a switch unit, SPST. 
>Without touching the switch button, see if there are any pairs 
>shorted, write those down. Then see if there are any that are 
>open and write those down. If there is a combination of open and 
>closed pairs without touching the button, then it's possible to 
>wire it as at least one SPDT. With 4 like that, it's possible 
>that 2 are on while 2 are off and that the state of the switches 
>reverses when the button is pushed. Or it could just be 4 x SPST, 
>all on or all off. 

Oh yeah, after doing the above, push the button once and see if the shorted ones
open and the open ones become shorted, if they do, then you can make SPDT out of
it...  Sorry, too quick on the send button.

>
>I've given far more than $0.02 here, so I'm all out...
>
>
>-- ScottG
>
>---------------------------------------------------------
>-- Scott Gravenhorst
>-- Xilinx Spartan-3E Based Music Synthesizers
>-- FatMan: home1.gte.net/res0658s/fatman/
>-- NonFatMan: home1.gte.net/res0658s/electronics/
>


-- ScottG

---------------------------------------------------------
-- Scott Gravenhorst
-- Xilinx Spartan-3E Based Music Synthesizers
-- FatMan: home1.gte.net/res0658s/fatman/
-- NonFatMan: home1.gte.net/res0658s/electronics/



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