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Re: Solid core inductance
Phil,
We might be able to offer better advice if we know what tools and instruments you have available. Al's suggestion is probably the best approach: (1) wind a test coil (loosely) on the center leg of the E, (2) measure the inductance of that test coil on the core, (3) remove the coil and measure the inductance again in air, and (4) calculate the relative permeability of the EI core as the ratio of the two inductance measurements.
This leaves open the question of how to measure the inductance of your test coil. Again, how best to do that will depend on what tools and instruments you have available.
__________________
Richard Wallace
Mentor since 2011 for FRC 3620 Average Joes (St. Joseph, Michigan)
Mentor 2002-10 for FRC 931 Perpetual Chaos (St. Louis, Missouri)
 since 2003
I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.
(Cosmic Religion : With Other Opinions and Aphorisms (1931) by Albert Einstein, p. 97)
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