[GreenKeys] Measuring Electromagnet Saturation?

[Randy or Sherry Guttery]

WA5CAB at cs.com wrote:
> You did.  Although you apparently don't realize it. 

No, I didn't. If you don't understand the difference, and refuse to 
learn the difference, then there is nothing anyone can do to enlighten you.

> The original question 
> was how to determine the saturation current of a DC solenoid.  

THAT is correct.

>There are quite a
> few ways in which to do this, 

Yes.

> none really having anything to do with 
> saturable reactors or mag-amps, 

Wrong, you simply do not understand the principle, or else are a troll.

> unless you just want to try to baffle people with 
> bullshit.  But no engineer who just wanted a quick and relatively accurate answer 
> would use most of them.  

Your opinion.

> As I said earlier, if you know the core material, dimensions and the number 
> of turns in the coil, you could simply use the B-H curve for the material and 
> arrive at a pretty accurate answer in a few minutes without ever getting up 
> from you desk. 

Which isn't the case here.

> If you want to actually measure it, there are two practical 
> methods.  

Depends on the equipment at hand whether as to what's "practical", and 
you're still left one out.

The Gaussmeter

Few average techs are going to have one in their pocket.

> Anyway, who cares what the AC impedance of the solenoid coil is.  Or how you 
> design a magnetic amplifier (not much done since the 50's anyway - pretty much 
> a dead technology). 

Again, you show your ignorance, and arrogance. Magamps and saturable 
reactors are alive and well, and part of some very new technologies and 
products - as an even casual search via Google of the net would show.

> If you want to drain a swamp, use a pump.  If you want 
> to measure flux density, use a Gaussmeter.

Sure, loan him yours. When can he expect it to arrive? If the OP has a 
few common pieces of test equipment that most radio enthusiasts have, 
the method I described will work, and with quite accurate results.

sheesh.
-- 
randy guttery

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