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Pocket knife trick

A little different electric motor

On this motor, the magnet is the rotor
Author: Gilles Charles, Sciences University, Bourges, France
Online since: 22/09/2010, Number of visits: 250683
We already introduced two simple electric motors in our applications: The World's Simplest Electric Motor
The project "Mini Motor" follows the following principle: A copper wire rotor circles over a magnet as a stator. In this experiment it's the other way round: The magnet itself works as a rotor. In this experiment a S-20-05-N disc magnet and a W-12-N cube magnet are used as a rotor.
Diagram of the motor
Diagram of the motor

The following videos show the variations of this motor.
Experiment: Trying to light up an LED through induction


Articles used

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Bestseller icon S-20-05-N
S-20-05-N
Disc magnet Ø 20 mm, height 5 mm, holds approx. 6,4 kg, neodymium, N42, nickel-plated
Bestseller icon S-20-05-N
1 pc. 2,93 EUR ea.*
from 3 pcs. 2,57 EUR ea.*
from 10 pcs. 2,25 EUR ea.*
from 20 pcs. 2,09 EUR ea.*
from 40 pcs. 1,95 EUR ea.*
Ask for a rebate from 350 pcs.
Available: 194 645 pcs.
W-12-N
W-12-N
Cube magnet 12 mm, holds approx. 6,3 kg, neodymium, N48, nickel-plated
W-12-N
1 pc. 4,12 EUR ea.*
from 3 pcs. 3,61 EUR ea.*
from 10 pcs. 3,16 EUR ea.*
from 20 pcs. 2,93 EUR ea.*
from 40 pcs. 2,74 EUR ea.*
Ask for a rebate from 240 pcs.
Available: 57 438 pcs.
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