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Some argue with magnetic force only, leaving questions of conservation of energy aside. Some argue that permanent magnets contain stored magnetic energy, which will be consumed by the motor. Such energy that exists is limited to the energy spent during the production of the magnet, which is rather small. Also, this would lead to a rapid ...
This type of system uses a linear motor/generator consisting of a stack of permanent magnets and coils to generate electricity. This system was further developed at Tufts University and has been licensed to Electric Truck, LLC. Preliminary data suggests 20% to 70% of the energy normally lost in the suspension can be recaptured with this system. [2]
A permanent magnet synchronous generator is a generator where the excitation field is provided by a permanent magnet instead of a coil. The term synchronous refers here to the fact that the rotor and magnetic field rotate with the same speed, because the magnetic field is generated through a shaft-mounted permanent magnet mechanism, and current is induced into the stationary armature.
Alnico is a NRE permanent magnetic material used in permanent magnet motor applications such as magnetic speed and flow sensors, electric generators, and consumer goods. These magnets exhibit weaker performance in comparison to NdFeB and SmCo counterparts but still maintain high coercivity and are far cheaper due to their lack of rare earth metals.
The recalled product — sold under the name "Relax 5mm Science Kit, Large Hematite Magnets Magnetic Stones Building Block" — includes 216 multicolored spherical balls measuring 5 millimeters in ...
The sum of kinetic energy and potential energy is always constant (minus energy lost due to friction). The ball never has more energy than it did when first put into position. The magnetostatic field produced by any arrangement of stationary permanent magnets is a conservative field of the magnetic scalar potential. This means any magnetic ...