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Wind some turn on it and measure what the inductance is, then from the cross sectional area and number of turns you can find out the relative permeability.
Frank
Hi mshh
There are some solutions for your problem
One : if name of the core is marked on it , refer to the datasheet which presented by the manufacturer .
two : measure inductance instead of one or two turn , ferrite cores must deliver more inductance in compare with iron powder .
Break a spare one in half and leave it exposed to humid
air; ferrite is nearly inert (black oxide), powdered iron
will rust somewhat on the freshly broken faces.
Break a spare one in half and leave it exposed to humid
air; ferrite is nearly inert (black oxide), powdered iron
will rust somewhat on the freshly broken faces.
Hi dick free bird !
Interesting methodology . i didn't know it , but do you think that he/she has some of these cores ? it seems that he/she has one of those inductors and if he/she break it then then he/she can understand what it made from but no profit because there will be no intact core available . isn't it ? :wink:
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