[AMPS] t v. pi

[Tom Rauch]

> You can still get non linear enough to screw up the IMD, though, if the flux
> density is too high.

That might be true in some cases. I recently measured IMD on a 73 
material for an antenna question and found heating occured long 
before IMD became a problem.

But if the cicuit is a resonant high Q circuit, the IMD problem is 
worse! That's because the IMD is caused by the non-linearity shifting 
the resonant frequency of the core.

In a broadband transformer or low Q circuit, IMD has never been a 
problem in my experience unless the core gets VERY hot (with the 
exception of low duty cycle and dc bias saturation.)


73, Tom W8JI
w8ji.tom@MCIONE.com

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