DPDT???

Matthew

Hello. I recently purchased these DPDT switches from www.allelectronics.com. These to be exact:

http://www.allelectronics.com/cgi-bin/category.cgi?category=700325&item=PB-94&type=store

I was hoping it would close or open a ciruit based on its position (up or down). Unfortunetley it's not working as expected. Anyone know what's wrong?

Thanks.

KenM

What exactly is the switch supposed to "switch"

I suspect there is a simple wiring error?

Ken

Paul Baker

A DPDT has the following configuration (you may know this)

A ___
·····\
····· \___ C
······ :
B ___· :
·······:
D ___· :
·····\·:
····· \___ F

E ___

the dotted line ([noparse]:)[/noparse]·signifies that the switching elements (represented by \) move in unison. A multimeter will confirm this.

typically the pins will be organized like this (using terminal·letters from above)

A C B

D F E

Again by testing the resistance with a multimeter will verify if this is the case. The resistance between any of the top·pin and a bottom pin will be near infinite and vice versa, the resistance between·A and B, as well as D and E will also be near infinite. C with A or B will depend on the switch state, the same holds true for F with D or E.

Paul

Matthew

Okay, got it working, thanks guys!

Chris Savage

I was going to mention, I don't think the pins are set up as you might expect...Incidentally, I got the same switches from:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=58166&item=3866868406&tc=photo

10 PCS for $.99 ...Not a bad deal...



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Chris Savage

Knight Designs
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P.O. Box 97
Montour Falls, NY 14865
(607) 535-6777

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