[GreenKeys] Loop supply voltage

[steve bennett]

GKs,
   Yet another M15 question.Please check my math. I'll be really embarrassed if I screwed up ohms law.My selector magnets are in series and reading a total of about 200 ohms.This means to get 60mA I need to apply 12V?
I thought loop supply voltage was way higher than that, like up near 100vAm I confused? Wouldn't be the first time.
-Steve
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