[Elecraft] [OT} Wireless chargers (or transmission of electrical energy by wireless methods.)

[Sandyb]

Don't forget an ancient experimenter that wanted to transmit energy: 
considerable amounts, by wireless!!!  He wasn't stupid and was deadly 
serious about this quest.  Read his history!

His name was Nikola Tesla who spent untold amounts of money trying to do 
just this!  He wasn't successful except over very short distances and the 
efficiency wasn't good.

So don't get your hopes up.

Tesla revolutionized the AC electric generation and transmission system 
with Westinghouse bankrolling him and made the polyphase AC system the 
cornerstone for all the systems on the "grid" today except for the small 
amount solar and wind power contribute at this time.  There really isn't a 
technology that will outdo steam turbine power generation except perhaps for 
nuclear plants which can become runaway hazards as demonstrated by 6 Mile 
Island and Chernobyl Russia meltdowns plus the tsunami upset nuclear plants 
in Japan!  Engineers and ecologists still haven't found a way to safely 
store spent nuclear fuel rods without them having the possibility of 
becoming toxic and extremely dangerous in the future.

Transmitting megawatts of power versus just a few watts wirelessly are 
horses of two completely different colors in spite of what the "dreamers" 
say.


73,

Sandy W5TVW
-----Original Message----- 
From: Tim Hague
Sent: Wednesday, September 11, 2013 11:30 PM
To: Erik Basilier
Cc: <Elecraft at mailman.qth.net>
Subject: Re: [Elecraft] [OT} Wireless chargers

I can't post on the site but I'd like to ask about the EMC conformance of 
such a device, another PLT saga coming up.

Best regards, Tim Hague
Skype m0afj.Tim
Sent on my iPad


On 11 Sep 2013, at 18:04, "Erik Basilier" <ebasilier at cox.net> wrote:

> Chargers for small electronic devices that use low frequency induction at
> close range are common and harmless.
>
> But how about a device that is said to use many transmitters to focus 
> energy
> at a rate of 1 Watt onto a device that is 30 ft away?
>
> Harmless??
>
>
>
> http://tinyurl.com/oopg7l3
>
>
>
> 73,
>
> Erik K7TV
>
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