DPDT???

Comments

• KenM Posts: 657

  2005-01-15 05:43 edited 2005-01-15 05:43

  What exactly is the switch supposed to "switch"
  
  I suspect there is a simple wiring error?
  
  Ken
• Paul Baker Posts: 6,351

  2005-01-15 06:33 edited 2005-01-15 06:33

  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 Posts: 200

  2005-01-15 07:26 edited 2005-01-15 07:26

  Okay, got it working, thanks guys!
• Chris Savage Parallax Engineering Posts: 14,406

  2005-01-16 03:29 edited 2005-01-16 03:29

  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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