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Wireless power transfer

Discussion in 'Power Electronics' started by Electric-T, Jan 9, 2018.

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  1. Electric-T

    Electric-T

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    Jun 4, 2017
    So this ia a pretty cool concept. I realise its not brand new but short of a tesla coil i haven't seen it in the world much. (Unless you count wireless headphones. I dont)

    Im thinking of a design. I want to charge a cell phone wirelessly. I dont want to do it tesla style though haha.

    Anyone mess around with WPT before?
     
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Jan 21, 2010
    My toothbrush does.
     
  3. AnalogKid

    AnalogKid

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    Harald Kapp likes this.
  4. Electric-T

    Electric-T

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    Jun 4, 2017
    By tesla style i mean tesla coil style. Arcing visibly through the air to a receiver. Sounds dangerous
     
  5. AnalogKid

    AnalogKid

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    N.o. o.n e. does wireless charging that way.

    ak
     
  6. Electric-T

    Electric-T

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    Jun 4, 2017
    Yeah that wouldnt be too attractive to the people huh haha.
    Well i guess im going to do some research and look at some schematics if i can find some.
     
  7. Audioguru

    Audioguru

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    Sep 24, 2016
    The transmitting coil and the receiving coils must be touching each other or almost touching.
    Wireless headphones transmit infrared or radio signals not power and get the power for their receiver from a battery.
     
  8. Electric-T

    Electric-T

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    Jun 4, 2017
    Well thats unfortunate. But not completely discouraging. And yes i was thinking of radio signals as power. A tiny amount of power
     
  9. Audioguru

    Audioguru

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    A radio picks up a tiny amount of the massive transmitted power. But the radio still needs a battery or power supply to operate its circuit.
     
  10. Electric-T

    Electric-T

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    Jun 4, 2017
    True. Well I guess the tech isnt quite there.
     
  11. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Crystal radios (and their modern equivalent, the RFID tag) are not exactly new tech.

    The problem is what you can do with a small amount of power, or conversely, how you can get an appreciable amount of power wirelessly.
     
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