can permanent magnet motors run without electricity.i mean that can we make a motor run only permanent magnet?

Question

can we make a running motor without using any energy.using permanet magnets. this is possible or not.

Answer 1

The reason that a permanent magnet motor spins is because the electrical current running through the rotating area is somehow being pulsed. If this electricity was replaced with another permanent magnet, the rotor would rotate into alignment with the stationary magnet and then stop.

Look at this from the perspective of classical mechanics. Energy cannot be created...ever. If you had a motor that ran on permanent magnets,, no energy would be entering the system, but kinetic energy would be exiting the system.

You cannot get something from nothing; you cannot create energy, only convert it. In a conventional motor, electrical energy is converted into mechanical energy (and heat), but the net input energy and net output are still equal.

Answer 2

No, permanent magnet motors are DC motors that use direct current to have the other part of the motor interacting with the permanent magnet. So you have coils for the electromagnetic field. A motor has a stator and a rotor. On a permanent magnet motor, either the stator OR the rotor consists of a permanent magnet. The other part is a switchable coil-electromagnet.
There is no "free-energy" out of a permanent magnet to make a motor run on its own.

Answer 3

If you look at a dc motor, you will see brushes and commutator. What these do is reverse the current and so the polarity of the electromagnet as the motor turns. Permanent magnets have no way to reverse the polarity so it wouldn't turn. There are some newer dc motors that don't have brushes and commutator but they contain sensors and have electronic controls to do the same thing but without the maintenance issues of brushes etc.

Answer 4

Friction would create heat which would eventually rob the motor of any ability to create energy for work. So a motor using permanent magnets would eventually run down (sooner, rather than later).

Answer 5

if u want get motor running by magnet, than you can add n and s magnet and than motor will start and you can use this input in Permanent Magnetic Generator.

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Answer 6

Yes

do a google video search for ( Perendev Magnet Motor )

you will have lots of interesting discoveries to make there.
Click the below link to take you there.
http://video.google.com/videoplay?docid=2724514424792268654&q=permanent+magnet+motor&total=76&start=20&num=10&so=0&type=search&plindex=5

have fun and enjoy , there are many amazing videos to watch...

Answer 7

yes ,of course

permanent magnet can produce AC how much ever because
the magnet property wont go off in a permanent magnet

Answer 8

You can't get energy out without putting energy in.