While working on a project I noticed something wonky and I don't understand how or why it is happening. Typically if I have an inductor, the presence of a permanent magnet will reduce the inductance according to its distance - however I have started using a type of nanocrystalline core that is showing a marked increase in inductance when at a certain position from a permanent magnets pole. I cant rationalize this - could someone help explain this? I'd be most appreciative, it's been bothering me for some time! I shot a quick video to demonstrate what I'm talking about: Thanks!