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wireless power transfer

 
 
Reply Mon 18 Jan, 2016 04:57 am
i would like to make the wireless power transfer via resonance coupling. how to make it long range between coil? how the circuit?
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Type: Question • Score: 1 • Views: 717 • Replies: 9
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dalehileman
 
  1  
Reply Mon 18 Jan, 2016 11:38 am
@zulsafwan,
Good Q, Zula. do consult Google. For what it's worth, However, surging up from my past,

Quote:
how to make it long range between coil?
Higher frequency but preferably assembly means to direct beam; for instance a reflector behind the coil. Both ends, I'd guess

Quote:
how the circuit?
Well how about it
Just kidding Zula. You'll probably haft find a suitable oscillator and a power amplifier

Let's hope we hear from Eng or other such participant much smarter than your Everyday Dimwit (me)
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Leadfoot
 
  1  
Reply Mon 18 Jan, 2016 12:40 pm
@zulsafwan,
What's wrong with a wire? Or magnetic field if you must go wireless? My toothbrush recharger works fine wireless.

If you have to go wireless at longer distance, try microwave or optical (ie, solar power.)
dalehileman
 
  1  
Reply Mon 18 Jan, 2016 02:11 pm
@Leadfoot,
Quote:
Or magnetic field
Of course foot, Zul's "resonance coupling" is precisely that
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Tes yeux noirs
 
  1  
Reply Mon 18 Jan, 2016 02:35 pm
The inverse square law makes wireless power transfer impractical for just about all purposes over distances greater than a few millimetres
Leadfoot
 
  1  
Reply Mon 18 Jan, 2016 03:53 pm
@Tes yeux noirs,
Quote:
The inverse square law makes wireless power transfer impractical for just about all purposes over distances greater than a few millimetres
The source does not have to be Omni-directional.
Think laser.
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dalehileman
 
  1  
Reply Mon 18 Jan, 2016 05:46 pm
@Tes yeux noirs,
Quote:
wireless power transfer impractical....over distances greater than a few millimetres
To the contrary Tes. Today huge amounts of power can be transmitted wirelessly for long distances, per Foot above. Doubtless we'll hear from others who are up on this sort of thing
Tes yeux noirs
 
  1  
Reply Tue 19 Jan, 2016 10:44 am
@dalehileman,
Example please.
Leadfoot
 
  1  
Reply Tue 19 Jan, 2016 11:05 am
@Tes yeux noirs,
It has been proposed that we could capture solar energy (electrical) and relay it down to earth using microwave energy. Would make solar good 24/7 this way. No reason this would not work but some people freaked at the thought of the beam diverting from the receiving antenna array and frying anyone in its path.

Your kitchen microwave is another example but just converting to heat instead of electricity. You could easily build a simple collector to gather it as electricity.
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dalehileman
 
  1  
Reply Tue 19 Jan, 2016 11:22 am
@Tes yeux noirs,
https://www.google.com/?gws_rd=ssl#q=wireless+power+transmission
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