Switching of dual polarity rails...

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Dr.EM

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Hi. This is a bizzarrely simple question, but how do you switch a dual polarity rail on and off? I assume there is a way of doing it without using 2 switches (ie, one for -9, one for +9 or whatever). Is it a DPDT switch? If so, could anyone show me how to wire one up, i've never had to use them before, cheers.
 

DPST would do (although you could use a DPDT and wire it as DPST), it's just two switches in a single casing - there's nothing to show about wiring it up!.
 
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