Comparing a 4038 internal transformer core to Magnetec Nanoperm

The Magnetec M-059 which is so what thicker and bigger appeared to have an inductance index about 5 times bigger that the ring core from a Coles 4038.


The measurment was done with the usual Escort ELC-120 LCR meter.


One of the terminal measuring wires was passed through each core.


12μH was the reading with the Mumetal? core from the Coles 4038.


55μH was the inductance reading from the Magnetc Nanoperm ring core.