Contactor coil: 50 Hz vs. 60 Hz

I have IR equipment, I just thought that most people that work in this field would at least have a small hand held unit. When doing quick checks between induction and DC R it's a quick and dirty way to determine the operating range of AC coil in a DC environment.

Most AC coil design i've seen try to balance between DC R and induction, for obvious reasons.

We use one of the Humphrey solenoid valve series at work that employs a single DIODE in series to operate the coil from the 120AC control voltage in many different applications.

I suppose it's possible those units actually have a 240 AC coil in them and that is done for 120 volt operation. Or say that it could be done to help keep the valve from sticking, thus allowing it to buzz just a little how ever, these unit runs perfectly quiet and if they're buzzing I can't hear or feel it? Depends on the hysteresis in the core I guess.

Have a good day.

Jamie

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YES JAMIE TAKE YOUR HUMPHREYS BABY PILLS... YOU ARE HYSTERICAL...BOOWAHAHAHAHA!

THE HYSTERISIS CURVE IS A CHARACTERISTIC OF A WAVE FORM., NOT INSIDE THE CORE BUT THE INPUT/OUTPUT SIGNAL.......

TRY AND HAVE A NICE WEEK PATTYCAKE TGITM

BOOWAHAHAHAHAHAHA !

Go learn some magnetics theory (if you're capable).

You might learn to spell "Hysteresis" as well.

PLEASE MR. FLINTSTONE, THIS IS NOT AN ENLIISH GRAMMAR GROUP. GO TO ALT.ENGLISH.GRAMMAR.FREAKS FOR THAT. THANK YOU VERY MUCH. PATECUM TGITM

BOOWAHAHAHAHAHAHAHAHA !