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Old March 16, 2017, 05:11 PM   #179
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Join Date: February 27, 2015
Posts: 1,768
Not for this particular application, but I use a LOT of common relays in projects,
Common maintiance men can find a bad relay and replace it, no specalized test equipment or training required.

It's just too easy to add a LED to a relay to show when it's stopped working,
That makes it super easy for the guy doing maintiance to find the fault.

I can't imagine trying to keep up with a relay switching an induction circuit, the switching rate is so fast I can't imagine a relay would last long at all.
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