Magnetech opposite pole electromagnets
(magnetic pole on each end) can repel a permanent magnet
with pole on each end. Size the diameter of a permanent magnet as same as the
diameter of the pole of an opposite pole electromagnet, not the outer diameter.
Because there is a magnetic field cancellation, adjust the air gap between the
electromagnet and permanent magnet so that one of them cannot overcome the
other. Usually, the electromagnet has to operate at very low duty cycle or
pulsed voltage in order to output strong magnetic field without overheating.
Magnetech standard round electromagnets can repel a certain permanent magnet
which is in a shape of think disc with magnetic poles on each side (only single
pole per side not multiple poles) and smaller diameter than a round
electromagnet.
