Hi,
It is completely normal to occur under load. Outer layers have higher mean turn length and that translates into higher Rdc and higher leakage inductance. Leakage inductance cause will be more apparent at higher frequencies.
However without load and low frequencies, it would not be normal.
It is completely normal to occur under load. Outer layers have higher mean turn length and that translates into higher Rdc and higher leakage inductance. Leakage inductance cause will be more apparent at higher frequencies.
However without load and low frequencies, it would not be normal.