#41




That is not a vector diagram.

#42




Well, it is a diagram, and it does display the vector quantities of resistance and reactance, as relates to solenoid operation. Besides, making the points on vectors in a diagram takes too much time.
I'm way out of date on a lot of electronics terminology. Wiki searching showed me the inverse of ohm is now 'siemen', as opposed to 'mho' (a term I always liked, besides being a great scrabble word) 
#43




Did you replace the back panel in the box? I got a few of those through my distributor but only encountered it maybe three times. there was an RB technical bulletin that addressed it thoroughly.
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#44




Quote:
http://physicspages.com/2013/02/19/m...ofasolenoid/ 
#45




Quote:

#46




It doesn't? From link.
A solenoid is a helical coil of wire wound round an insulating cylinder. We can find the magnetic field due to a solenoid carrying a steady current I as follows.Explain how it doesn't relate ... in mathematical terms. 
#47




Not very relevant to measuring 30 ohms DC resistance in a solenoid coil, and then observe it displaying an impedance of 120 ohms with a 60 Hz voltage applied. My homemade diagram showed how the DC resistance and the AC reactance combine to give the total impedance. Feel free to make a superior impedance diagram.

#48




Quote:
Quote:
You mean a phasor diagram? 
#49




Since there isn't any appreciable capacitance in the solenoid circuit, the diagrams and equations can be a lot simpler. I will add some halfpoints to the three vector quantities, and, because it matters not in sprinkler work, I'll leave out the phase angles.

#50




No explanation, and no math.

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