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Electrostatic motor

 

 
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Electrostatic motor
 
 
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An electrostatic motor or capacitor motor is a type of electric motor
Electric motor

An electric motor uses electrical energy to produce mechanical energy, nearly always by the interaction of magnetic fields and current-carrying conductors....
 based on the attraction and repulsion of electric charge
Electric charge

Electric charge is a fundamental conserved property of some subatomic particles, which determines their electromagnetic interaction. Electrically charged matter is influenced by, and produces, electromagnetic fields....
. Usually, electrostatic motors are the dual
Dual (electronics)

For other meanings of the word not related to electricity and magnetism, see duality.In physics, the electromagnetic dual concept is based on the idea that, in the static case, electromagnetism has two separate facets: electric fields and magnetic fields....
 of conventional coil-based motors. They typically require a high voltage power supply, although very small motors employ lower voltages. Conventional electric motors instead employ magnetic attraction and repulsion, and require high current at low voltages.






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An electrostatic motor or capacitor motor is a type of electric motor
Electric motor

An electric motor uses electrical energy to produce mechanical energy, nearly always by the interaction of magnetic fields and current-carrying conductors....
 based on the attraction and repulsion of electric charge
Electric charge

Electric charge is a fundamental conserved property of some subatomic particles, which determines their electromagnetic interaction. Electrically charged matter is influenced by, and produces, electromagnetic fields....
. Usually, electrostatic motors are the dual
Dual (electronics)

For other meanings of the word not related to electricity and magnetism, see duality.In physics, the electromagnetic dual concept is based on the idea that, in the static case, electromagnetism has two separate facets: electric fields and magnetic fields....
 of conventional coil-based motors. They typically require a high voltage power supply, although very small motors employ lower voltages. Conventional electric motors instead employ magnetic attraction and repulsion, and require high current at low voltages. In the 1750s, the first electrostatic motors were developed by Benjamin Franklin
Benjamin Franklin

Benjamin Franklin was one of the Founding Fathers of the United States of the United States. A noted polymath, Franklin was a leading author and Printer , Satire, list of political philosophers, politician, scientist, inventor, activism, statesman, and diplomacy....
 and Andrew Gordon. Today the electrostatic motor finds frequent use in micro-mechanical (MEMS) systems where their drive voltages are below 100 volts, and where moving charged plates are far easier to fabricate than coils and iron cores. Also, the molecular machinery which runs living cells is often based on linear and rotary electrostatic motors.

The prime classifications of electrostatic motors by the USPTO are:
  • Class 310 ELECTRICAL GENERATOR OR MOTOR STRUCTURE
    • 300 NON-DYNAMOELECTRIC
      • 308 Charge accumulating
      • 309 Electrostatic


Patents

  • ' -- J. Gallegos -- "Static electric Machine"
  • ' -- E. Thomson
    Elihu Thomson

    Elihu Thomson was an electrical engineering and inventor who was instrumental in the founding of major electricity companies in the United States, United Kingdom and France....
      -- "Electrostatic motor"
  • ' -- Harold B. Smith -- "Apparatus for transforming electrical energy into mechanical energy"
  • ' -- W. G. Cady -- "Electromechanical System"
  • ' —- T. T. Brown
    Thomas Townsend Brown

    Thomas Townsend Brown was an United States physicist....
     -- "Electrostatic motor" (1934-09-25)
  • ' -- B. Bollee -- "Electrostatic Motor" (ed. Electrostatics from Atmospheric Electricity
    Atmospheric electricity

    Atmospheric electricity is the regular Diurnal phase shift variations of the Earth's Earth's atmosphere Electromagnetism electrical network . The Continent, the ionosphere, and the atmosphere is known as the global atmospheric electrical circuit....
    )
  • ' -- B. Bollee -- "Electrostatic Motor"
  • ' -- MITSUBISHI CHEM CORP -- "Electrostatic actuator"
  • ' -- Robert, et al. -- "Electrostatic Motor"


See also

  • Electrostatic generator
    Electrostatic generator

    An electrostatic generator, or electrostatic machine, is a mechanical device that produces static electricity, or electricity at high voltage and low continuous current....


External articles and further reading

O. Jefimenko, "Electrostatic Motors", Electret Scientific Co., 1973 de Queiroz, Antonio Carlos M., "". 24 January 2002. C.L. Stong, "", October 1974. William J. Beaty, "". "". tm.net. Fast and Flexible Electrostatic Motors at Univ. Tokyo"". Heavy Lifting Electrostatic Motors at Univ. Tokyo"".