Hello, I'm investigating this air conditioning fan speed controller unit, which appears to have interesting components.
I'm first year EE stundent and I have no clue what that huge coil and the "sensor"(or another coil?) inside it are supposed to be and how they work. Is is some sort of transformer?
Can someone give me tips on this one? I couldn't find such coil arrangement in any AC speed controller circuits.
Thank you!