Wiring a 3pdt as a spdt?

Started by fender182g, May 29, 2014, 05:35:57 PM

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fender182g

Hi i am a newbie when it comes to wiring a 3pdt and was just wondering if any of you guys could help me out.
I was wondering if i could wire up a 3pdt as a spdt ir spst and if so could someone tell me how?

Thanks ;D

pappasmurfsharem

#1
SPDT and SPST dont differ much.

SPDT have a 3rd Lug.

So if you start on the far left picture and use the left most SPDT column. The Use the first and second lug for SPST and leave the 3rd lug empty.



But to understand better. SKIP ALL OF THE ABOVE AND READ THIS.

http://www.diystompboxes.com/smfforum/index.php?topic=970.0
"I want to build a delay, but I don't have the time."

induction

A 3PDT is just three SPDT's that get thrown simultaneously. Looking at this image:



If you only use lugs 1, 2 and 3, and leave the rest disconnected, you get an SPDT. (Lugs 1, 2, and 3 for 'a pole'. Likewise lugs 4, 5, and 6 form a separate pole, and so do lugs 7, 8 and 9.)

If you only use lugs 1 and 2, you get an SPST. (Or lugs 2 and 3, 4 and 5, 5 and 6, 7 and 8, or 8 and 9.)

Edit: ninjas everywhere.

pappasmurfsharem

Quote from: induction on May 29, 2014, 06:08:13 PM
Edit: ninjas everywhere.
He he he  :icon_twisted:

@OP
Now keep in mind. While you can get 3 SPDT's or SPST's they can not be switched separately.
"I want to build a delay, but I don't have the time."

fender182g


R.G.

The zen answer is to get out your ohmmeter, a pencil and paper.
R.G.

In response to the questions in the forum - PCB Layout for Musical Effects is available from The Book Patch. Search "PCB Layout" and it ought to appear.