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???
03/06/12 16:36
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#186447 - I would ground the Vee(gnd)
Responding to: ???'s previous message
the button circuit (if you have shown it correctly, is an "any button" circuit.
clearly, if you want the indicators to work, you need to power it with 24V.

I would ground the Vee(gnd) of the micro circuit and use a resistive/OPamp "polarity converter" for both the A/D and the switches

Erik

List of 5 messages in thread
TopicAuthorDate
+Ve Grounded Supply            01/01/70 00:00      
   What else...            01/01/70 00:00      
      yes connected to micro controller            01/01/70 00:00      
         I would ground the Vee(gnd)            01/01/70 00:00      
            not Button it is a limit switch            01/01/70 00:00      

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