03-26-2007, 11:35 AM | #1 | |
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Powercast
I saw this in PopSci last night, but they won't let me to a web version of their write up, so here's one at c|net, which is a better write up anyway, and they have a video!
What is it? It's a way to power small electronic devices wirelessly, via RF energy. Quote:
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03-26-2007, 04:09 PM | #2 |
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My my my, time flies, almost April, isn't it?
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03-26-2007, 04:24 PM | #3 |
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Why, so it is. But I only ran across it yesterday, in the April issue of Popular Science, as it happens.
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03-26-2007, 06:16 PM | #4 |
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I saw this talked about by quite a few reporters at this year's CES. The verdict was that it actually works. I imagine that it isn't very efficient, but the convenience is more important in this application.
There was a second company that had something similar but needed more specialized equipment. This one could be retrofitted to existing electronics. |
03-27-2007, 05:02 AM | #5 |
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yeah; sounds hideously wasteful to me; especially all the drives that are being made to conserve electricity at the moment (at least in my country).
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03-27-2007, 10:10 AM | #6 |
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Probably causes cancer in rats!
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03-27-2007, 11:07 AM | #7 |
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Reminds me of Slashpower of whom I haven't heard much in the last two years. However, they have a nice external news page linking to articles on wireless charging: http://www.splashpower.com/Press/News.html
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03-27-2007, 11:26 AM | #8 | |
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Yeah, I was reminded of that too, but I think the SlashPower approach is more of a direct inductive coupling thing (like those Sonicare toothbrush things), whereas this is an actual power transmission approach.
The PopSci article theorized that the approach might one day allow your cell to charge, or just plain run, off of the stray EMF transmissions that are all around us all the time. That would be extremely interesting. Hey, maybe they can make something that runs directly off of cosmic radiation ... or even straight off of radioactivity, so that we could have 'nuclear' power without all that messy fission/fusion bother. Quote:
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03-27-2007, 08:02 PM | #9 |
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Waste in the name of convenience. Inefficient in the extreme with the potential to be left on and running without serving a purpose. What we gain in switching to LED light technology gets canceled by this concept.
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03-27-2007, 08:16 PM | #10 |
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I'm pretty sure it's not the most efficient method, but we don't have any actual numbers, as far as I know. Besides, we have to figure out how to do things at all, before we can figure out how to do them efficiently. For instance, LED's didn't start out as an efficient means of lighting -- look how far we've come from the very first diodes to the current crop of computers, for instance.
For now, I'm willing to reserve judgment, until I know more details, and also to watch it in the future, regardless, to see how far it goes. |
10-07-2007, 12:08 PM | #11 |
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10-08-2007, 12:53 PM | #12 | |
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Quote:
I actually had a radio that used a forerunner of this technology about 20 or 30 years ago. It had two tuners. One you tuned to the most powerful radio station in your area for power and the other you tuned to the radio station you wanted to listen to. Of course it was only earphone capable. Dale |
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