Monday, November 7, 2011

HVAC more about SPST, SPDT and SPNO-SPNC relays

I discuss more about SPST, SPDT and SPNO-SPNC relays.

Posted by double pole double throw switch reviews at 12:18 AM
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1 comment:

dave said...

A good video of relays used in HVAC. Barber Colman relays.

December 4, 2011 at 11:43 PM

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