Discussion » Questions » Electronics » Have you heard of wireless charging ? how does that even work ?

Have you heard of wireless charging ? how does that even work ?

Posted - March 28, 2019

Responses


  • 46117
      March 28, 2019 2:06 PM MDT
    2

  • 6023
    It just means your device isn't plugged directly in to anything.
    There are still wires involved.
      March 28, 2019 2:15 PM MDT
    2

  • 44628
    I don't need it. I charge my phone about once a month. I know how it works, but I don't want to bore you with technical electronic stuff.
      March 28, 2019 4:41 PM MDT
    2

  • i have a  wireless charger 

    its nice when im too lazy to roll over and search for the wire 

    it doesn't charge as fast tho 
      March 28, 2019 5:24 PM MDT
    2

  • 17604
    The energy is transferred via electromagnetic field.  That is what I just read.....that is not where my expertise lies.  Everything you use that is wireless is dangerous.  I see no reason on the planet to add a wireless charger to the pile when you can just charge it with a wire.  I don't use WIFI at all, rarely used a mobile or wireless  phone.  

    When 5G becomes a reality the danger will surround everyone...not just wireless users.  It is beyond me why governments would allow this other than it probably means that we will have no privacy regardless of any measure we ourselves take.   For instance, I keep the WIFI turned off at my router.  When 5G gets here is will not matter.  There will be so many towers I can't even imagine.  My understanding is that every tower will have to be no less than 3 football fields (328 yards)  from other towers.  They will have to be  everywhere...on the streets, on buildings, in people's yards, everywhere.    
      March 28, 2019 9:24 PM MDT
    0

  • If induction coils are harmful than anything with a.c. Current running through it is harmfull. The wiring in your house then.  If you loop an extension cord  you're  amplifying it .  The heart of of these things are a couple donut magnets with a wired looped around a few times.

    You come in.contact with way more just being around AC current.
      March 29, 2019 8:07 PM MDT
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  • Its called induction.  The same principle of magnetic fields in shifting flux that cause metal pans to get hit but not your hand on an induction cook top.  AC voltage is ran through a coil at very high frequency and cause a shifting magnetic field from the rapidly shifting back and forth of positive to negative forward voltage.  That's energy.   Another cool pics this changing magnetic flux with another cool that is basically an antenna.   This excites the electrons and produces a current. In the same way a steel string over a guitar pickup works but in opposite.  Instead of the steel string vibrating across a magnetic field,  the magnetic field vibrates across the metal.  The same principle of induction is also how no contact multimeters measure electricity through insulation. This post was edited by Benedict Arnold at March 29, 2019 5:23 AM MDT
      March 29, 2019 5:21 AM MDT
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  • 3719
    High-frequency (i.e. radio frequency, NOT the mains 50Hz) electromagnetic radiation at high power / long exposure at your body (NOT umpteen metres away on top of a transmitting mast!) can be dangerous yes. However, if all electrical fields were as dangerous as some seem to fear, we'd all have fallen over long ago, and no-one could work in the electricity and telecommunications industries, or with powerful electrical equipment.

    The field is a function of both current and conductor length, and yes it is strengthened within the cylinder of a coiled wire, but its intensity is weak from a straight cable, and in all cases falls with the square of distance. At 2 metres from the cable the field strength per unit area is not half but one quarter it is 1m away; at 4m away it's down to one-sixteenth; a portable telephone's transmitting power is very low anyway.


    I wonder how many of those who claim it all so harmful have made themselves utterly dependent on electrical equipment at home? Appliances, heating, lighting, whose radiated fields are at 50Hz and of low power and intensity, yes; but how many are they also grafted onto 'phones, computers, entertainments and hobby equipment....?    


    As for 5G, I do not know if the closeness and numbers of relay aerials will be as Thriftmaid has read or heard; but my concern is political not one of safety at all. I am not afraid of portable telephones - but I do not let mine rule my life and it's switched off far more than on.

    Political because the UK Government seems hell-bent on giving its design, construction and operating profits to the People's Republic of China, despite not only the security fears voiced by many qualified to understand such matters, but also the general point of giving yet more of the nation away abroad to suit a few rather ill-thought political and economic theories. (Both main parties, not just the Conservatives, are guilty of this.) 
      March 31, 2019 2:05 AM MDT
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  • 22891
    never heard of it
      March 31, 2019 5:45 PM MDT
    0