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Re: Wireless Electricity
[Re: electure]
#213086
03/19/14 01:01 AM
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Joined: Jun 2004
Posts: 1,273
Member
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I could make a crack about this being old news to Tesla -- Nikola Tesla, that is.
I could reference the fact that getting a B field strong enough to transmit enough energy to brighten the room either costs a ton of copper/ silver -- or the frequency has to be lifted into the microwave range... and our liver is cooked.
What we have here is a big news-hole and dufus journalists who've yet to master a Web search by Google or Bing.
Tesla
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Re: Wireless Electricity
[Re: electure]
#213088
03/19/14 03:08 PM
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Joined: Apr 2002
Posts: 7,237
Member
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Agree with Teslas comments. A slow news day perhaps
John
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Re: Wireless Electricity
[Re: electure]
#213089
03/19/14 09:43 PM
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Joined: Dec 2000
Posts: 4,287
OP
Member
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I agree with both of you. It's a fantasy. Fantasy or not, the mere mention of it is bound to make THESE PEOPLE complain  No wonder CNN has such bad ratings!
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Re: Wireless Electricity
[Re: electure]
#213090
03/20/14 12:07 AM
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Joined: Jun 2004
Posts: 1,273
Member
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There ARE problems with smart meters: they didn't bother to embed digital security into them.
!
Tesla
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Re: Wireless Electricity
[Re: electure]
#213099
03/21/14 09:52 AM
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Joined: Feb 2002
Posts: 2,233
Member
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I don't know about anyone else, but when I was in business, I had several customers who were very worried about EMF and their health. I had to relocate wires and a service for customers that were afraid. The one homeowner had me move the service because the service ran right behind the head board of a bed and I believe someone who slept in that bed died of a brain tumor or something like that.
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Re: Wireless Electricity
[Re: electure]
#213113
03/22/14 02:39 AM
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Joined: Sep 2002
Posts: 908
Member
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I agree with both of you. It's a fantasy. Fantasy or not, the mere mention of it is bound to make THESE PEOPLE complain  No wonder CNN has such bad ratings! CNN (Chicken Noodle Network) has bad ratings because they are biased, & they just suck. 
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Re: Wireless Electricity
[Re: electure]
#213141
03/23/14 01:20 PM
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Joined: Nov 2005
Posts: 824
Member
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I agree that wireless power transmission, in the utility sense, is not practical. But with the lower power consumption and desire to eliminate connectors on portable devices, wireless battery charging will come into its own. The charging frequency will be in the 100s of kHz to more efficiently transfer power over a small air gap/core. I was reading up on a clever Linear Technology design that limits the charging current by detuning the receiver tank circuit. Those interested can go to DigiKey and download the datasheet for the LTC4120. The switching frequencies, close to 1MHz, refer to the battery charger converter. The actual power transfer tank is running at around 130kHz. Joe
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Re: Wireless Electricity
[Re: electure]
#213142
03/23/14 01:40 PM
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Joined: Jan 2005
Posts: 5,316
Cat Servant Member
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For years Greenlee has offered a device for testing HID and fluorescent bulbs. Milwaukee also offers one these days. What are they good for? Well .... I have a nephew, a certified geek with various degrees in physics. He was very concerned about EMF, and decided to get a gauss meter, so he could identify EMF issues in his home. Alas, he decided to do his EMF survey the day I was visiting .... He gets out his meter, and I (quietly) got out mine. Every now and then I'd push my 'test' button, which would send his meter (across the house) off the scales. Before long, I had him critically studying a wastebasket, trying to determine how the simple plastic tub could be the source of so much EMF  He was completely amazed, puzzled, and finally fascinated with my meter. The idea of using EMF to test bulbs had him shaking his head in wonder. What will they think of next? Maybe I'll 'invent' the sundial next 
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