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  2. Newman's energy machine - Wikipedia

    en.wikipedia.org/wiki/Newman's_energy_machine

    Newman's Energy Machine was a DC motor which the inventor, Joseph Newman, claimed to produce mechanical power exceeding the electrical power being supplied to it. In 1979, Newman attempted to patent the device, but it was rejected by the United States Patent Office as being a perpetual motion machine . [ 1 ]

  3. Free energy suppression conspiracy theory - Wikipedia

    en.wikipedia.org/wiki/Free_energy_suppression...

    The claim that devices exist which are capable of extracting significant and usable power from pre-existing unconventional energy reservoirs, such as the quantum vacuum zero point energy, for little or no cost, but are being suppressed. [12] [13] [14] The claim that related patents have been bought up, such as those for 100 mpg carburetors. [15 ...

  4. Electric generator - Wikipedia

    en.wikipedia.org/wiki/Electric_generator

    The magnetic field of the dynamo or alternator can be provided by either wire windings called field coils or permanent magnets. Electrically-excited generators include an excitation system to produce the field flux. A generator using permanent magnets (PMs) is sometimes called a magneto, or a permanent magnet synchronous generator (PMSG).

  5. Magnet motor - Wikipedia

    en.wikipedia.org/wiki/Magnet_motor

    A magnet motor or magnetic motor is a type of perpetual motion machine, which is intended to generate a rotation by means of permanent magnets in stator and rotor without external energy supply. Such a motor is theoretically as well as practically not realizable.

  6. Excitation (magnetic) - Wikipedia

    en.wikipedia.org/wiki/Excitation_(magnetic)

    An electric generator or electric motor consists of a rotor spinning in a magnetic field. The magnetic field may be produced by permanent magnets or by field coils. In the case of a machine with field coils, a current must flow in the coils to generate (excite) the field, otherwise no

  7. History of perpetual motion machines - Wikipedia

    en.wikipedia.org/wiki/History_of_perpetual...

    Following the example of Villard, Peter of Maricourt designed a magnetic globe which, if it were mounted without friction parallel to the celestial axis, would rotate once a day. It was intended to serve as an automatic armillary sphere. [2] Leonardo da Vinci made a number of drawings of devices he hoped would make free energy. Leonardo da ...

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  9. Linear alternator - Wikipedia

    en.wikipedia.org/wiki/Linear_alternator

    When the appliance is shaken back and forth, the magnet oscillates through the coil and induces an electric current. This current is used to charge a capacitor , thus storing energy for later use. The appliance can then produce light, typically from a light-emitting diode , until the capacitor is discharged.