Can WiFi signals be converted to energy ?

Discussion in 'General Electronics Chat' started by @hacker, Jan 22, 2015.

  1. @hacker

    Thread Starter New Member

    Nov 30, 2014
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    Hey all, i have a question that can WiFi signals be converted to energy (DC power)? If yes then how?
     
  2. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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  3. alfacliff

    Well-Known Member

    Dec 13, 2013
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    wi fi is low power, and also obeys the square law for power over distance. no useable power there.
     
  4. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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    So I can't power my home by stealing my neighbors Wi-FI.. :p
    Darn.. Guess I'll go back to trying to figure out how to use this "Google" thing everyone talks about.
     
  5. ian field

    Distinguished Member

    Oct 27, 2012
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    If you'd tried it 100 years ago when there was a 400kW spark transmitter up every other street, you might have got away with it.
     
  6. Papabravo

    Expert

    Feb 24, 2006
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    Is there some reason that you feel the need to shout? I find it rude and offensive.
     
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  7. paulktreg

    Distinguished Member

    Jun 2, 2008
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    Chill! ;)
     
  8. shteii01

    AAC Fanatic!

    Feb 19, 2010
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    Yes.
    Not worth doing it.
     
  9. crutschow

    Expert

    Mar 14, 2008
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    NO.
     
  10. takao21203

    Distinguished Member

    Apr 28, 2012
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    There's a list of ineffective cancer treatments, and the list of fictional alternative energy, harvesting or self-supporting machine kinds is almost as long.
     
  11. takao21203

    Distinguished Member

    Apr 28, 2012
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    Here's how the scam works:

    The "scientist" presents a lot of gear, including complicate spinning devices and measuring instruments and perferably, some kind of capacitors.

    Then he's contacted by someone who has funds, and hopes to make more money.

    He will claim he's very close to a breakthrough, the device actually works just cant be mass fabricated now. Some kind of investment is needed. The complicated machines are mainly presented in order to confuse, it may work well on someone who doesnt understand technology.

    At a later stage, eventually some batches of fake devices are actually produced (such as clamp on magnets for fuel pipes).

    there might be large magnets and hidden induction coils under the table (thats how these motors spin for hours from a tiny capacitor).

    Its similar, but its certainly not WIFI.
     
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  12. ian field

    Distinguished Member

    Oct 27, 2012
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    A few years back, one supermarket chain floated the ide of tiling their car parks with piezo elements to harvest energy from the traffic flow.

    AFAIK, the idea sank without trace.
     
  13. cmartinez

    AAC Fanatic!

    Jan 17, 2007
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    I remember those... I still find it hard to believe that lots of people fell for that...
     
  14. cmartinez

    AAC Fanatic!

    Jan 17, 2007
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  15. ian field

    Distinguished Member

    Oct 27, 2012
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    One old favourite was an inline auxiliary spark gap in the HT lead.

    Someone I knew in the 60s bought a set of (allegedly) aircraft spark plugs with 3 non-adjustable side electrodes - the misfire at cruising RPM was abominable!
     
  16. Reloadron

    Active Member

    Jan 15, 2015
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    Absolutely! WiFi signals are energy are they not? All transmitted signals are energy so all we need to do is receive them and convert them back to energy. When I was a kid during the late 50s I strung a 40 meter dipole antenna from a maple tree in front of the house to a cherry tree in the backyard for my first ever short wave receiver. I noticed that if I bumped the antenna wire against ground (copper water pipe) I saw a small spark. Imagine that, at 9 years old I discovered free energy. I pointed my new discovery out to my dad who actually was an EE. He wasn't as excited or amazed as I was but did encourage me to have at my new discovery. His words do still on occasion echo in my head, "Ronald, you can't get something for nothing". I discovered I could not even light a tiny flashlight lamp with my new found source of power. LEDs were not invented yet so I settled for flashlight lamps. :)

    Ron
     
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  17. MagicMatt

    Member

    Sep 30, 2013
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    Summary:
    Can you: Yes.
    Is it worth the effort: No.
    What could you power with it: Very little, if anything.
     
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  18. cmartinez

    AAC Fanatic!

    Jan 17, 2007
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    Well... the signal certainly "powers up" the wi-fi antenna in the receiver... but other than that... it's a waste of time
     
  19. ian field

    Distinguished Member

    Oct 27, 2012
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    If ants developed technology - they could probably run it off our radio waves.
     
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  20. cmartinez

    AAC Fanatic!

    Jan 17, 2007
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    :) now this conversation is diverting to nanotechnology...
     
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