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How do you NEUTRALIZE a magnetic field from a permanent magnet?
I want to temporarily NEUTRALIZE (not demagnetize) a magnetic field from a permanent magnet.
Basically I want the magnet to work normally until I want to turn it "off" or "neutralize" it. No electricity can be used to power it on, so that means no electromagnets. Electricity may be used to power it off though.
LoL I am not making a perpetual motion machine. I know enough about physics to know that's impossibe...well for now anyways heh.
Your objective appears to be similar to the objective of a magnetic latching relay or a magnetic latching solenoid. Those devices have long been manufactured using a design in which a spring holds the armature in one position and a magnet acting in opposition to the spring holds the armature in the other position. An electromagnet with reversible polarity or two electromagnets or are energized momentarily to switch the position of the armature. In these devices, the mechanical force provided by the permanent magnet is neutralized by the opposing mechanical force of an electromagnet. The permanent magnet is not magnetically neutralized even momentarily because that would eventually permanently demagnetize the magnet.
A magnetically latching solenoid apparatus has also been designed with a mechanism in which a magnet holds the armature in either of two positions with the position change being accomplished through momentary energization of an electromagnet.
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