i have an LC100-A inductance meter, the bare board you buy like off ebay, it's not so bad and it seems consistent enough in precision etc... while trying to measure the inductance of a small transformer primary (like ~5Watts) i noticed that the more the winding has parasitic resistance (like 500-2500ohms), the more is the inductance result, the fact is that doing calculations to math-out the turns-per-volt etc. gives way wrong results taking into account the inductance shown, quite likely the resistive factor of the winding alters the measurement, doing the same with large transformers gives predictable outcomes instead

i also noticed another thing (maybe to warn others) measuring the inductance on a low voltage side of an hi-v transformer (a flyback is the perfect example) you can obtain like 0 or varying low results ... i was puzzled at first but then i touched the secondary side and it started to show some value, apparenlty there's an hi-voltage generation on the secondary and this messes up the "apparatus" some way, honestly trying to short the secondary can be a bad idea to have a correct reading, transformers are a mess of mutually influencing parameters... is it true?

the question is (regarding the resistive thing)... is there a formula or something that having values of like...

- apparent inductance

- real parasitic resistance

- frequency of reading (the meter shows that also)

...can calculate the actual inductance?