obrien135
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I have some toroid transformer cores that got mixed together. They are unmarked and the same size, and I don't have any record of the part numbers from when I bought them. Is there any way to determine the AL factor of them without having an LCR meter? I guess I could put some turns of a winding on it and put it in series with another component of known value and measure the ac voltage drop at more than one known frequency. I could then repeat the same procedure with a different number of turns. Then I could calculate the AL factor. I know that sometimes the AL factor is based on the square of the number of turns (n^2) and sometimes not , so I probably have to repeat the procedure a few times to get an accurate set of data with which to perform the calculations. Is there an easier way?