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Gadget Freak Case #216: Wirelessly Charged Indestructible LED Lantern
6/11/2012

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The lantern can be made almost totally indestructible if you use extra epoxy before adding the second cap.
The lantern can be made almost totally indestructible if you use extra epoxy before adding the second cap.

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DRGONZO
User Rank
Iron
Good work
DRGONZO   6/11/2012 9:15:39 AM
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Well done, look forward to more projects from this young man.

tekochip
User Rank
Platinum
Very Nice
tekochip   6/11/2012 9:49:10 AM
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I really like wireless charging applications.

Nancy Golden
User Rank
Platinum
Re: Good work
Nancy Golden   6/11/2012 10:37:29 AM
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I agree, DRGONZO. It was certainly exciting to see this young man present his project and to see the next generation of engineers at work. I particular appreciated his desire to be innovative by looking for ways to improve the project.

John Duffy
User Rank
Gold
Re: Good work
John Duffy   6/11/2012 2:52:17 PM
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Thank you.  I have many more projects and I plan to submit some of them this summer.   

John Duffy
User Rank
Gold
Re: Very Nice
John Duffy   6/11/2012 2:57:43 PM
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Thanks.  The wireless charger and coils I used delivered about 12V, so you could charge almost anything.  The current, however, is pretty low, so it takes a long time to charge batteries.  If you have any improvements to the power output capability or efficency of the design, I'd love to see them. 

Cadman-LT
User Rank
Platinum
Cool gadget
Cadman-LT   6/11/2012 4:31:34 PM
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Very cool gadget! Nice to see young people interested in engineering these days!

Charles Murray
User Rank
Blogger
Re: Very Nice
Charles Murray   6/11/2012 6:29:31 PM
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Great job, John. In the next few years, the world's going to need a lot of engineers, like yourself, who are comfortable with LED technology. Very impressive!

TJ McDermott
User Rank
Blogger
Re: Very Nice
TJ McDermott   6/11/2012 10:24:07 PM
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Mr. Duffy, it is up to YOU to discover that breakthrough for fast charging.  I hope you do; you could be the person who finally gets all-electric vehicles into the mainstream.  Nothing we've seen to date has done a good job of this.

It would be nice to say "we saw him here first!"

John Duffy
User Rank
Gold
Re: Very Nice
John Duffy   6/11/2012 10:48:18 PM
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Thanks!

John Duffy
User Rank
Gold
Re: Very Nice
John Duffy   6/11/2012 10:53:01 PM
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I have gotten a slightly more powerful version (as in the video) but the main problem is that the coil's inductive resistence is high enough that no matter how much current I make avaliable, the current used is still usually below a few amps.  The secondary coil is just a few miliamps. 

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