Posted by
CmdrTaco
on from the now-thats-just-crazy dept.
Flibble writes "The BBC has a story about a uk startup offering a mat for charging all your portable devices via magnetic inductive power transfer. Is this the answer to cutting the mountain of chargers I have to carry all the time?" God wouldn't that be a dream come true?
Please please please
by
91degrees
·
· Score: 5, Insightful
Make these things standard! I an really annoyed by the dozen different types of connectors, 5 different voltage levels, and 2 possible polarities. I want one PSU that can recharge everything.
Re:Dumb Question
by
AlecC
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· Score: 4, Insightful
There is no electrical contact *to* short out. It is using magnetism, not electicity. Pad generates alternating magnetic field above its surface. Put coil tuned to same frequency in field. Conductor in changing magnetic field generates current, so AC generated. Add rectifier, DC generated. I can see that the add-on to the mobile device will be cheap - a coil and 4 diodes. This could work.
One non-green point: How much power is dissipated with no devices on it, or with fully charged devices? But then, how much power is dissipated by plugged in "wall warts".
-- Consciousness is an illusion caused by an excess of self consciousness.
Re:Are you watching USPTO?
by
kenthorvath
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· Score: 5, Insightful
Excuse me, but I think there is definately a PRIOR art on induction. Or believe me - there definately would be patents and a lot of other hoopla. On a side note, my electric toothbrush has been charging wirelessly for about two years now. This is news?
Re:Sounds Great
by
plover
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· Score: 4, Insightful
Actually, I'm wondering if retrofit kits will be available for existing equipment, such as a stickyback pad with a couple of solderable wires or some such. Those of us with old cell phones that are already out of warranty, or are not afraid to void our warranties, would love to use this.
Hey, another patentable feature: put the receiver in a Bluetooth mouse and use the charging pad as a mouse pad. Never EVER needs ANYTHING.
The cool thing is that "compatible" should be a non-issue. Each receiver will probably be fitted with an appropriately valued voltage regulator. The field produced by the mat won't have a "voltage" per se, but rather a "field strength." The receiver side will convert that to a voltage which will then be regulated as needed.
Hmm. I wonder if it'll even make a difference if the pad gets 120 or 220 volts?
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Make these things standard! I an really annoyed by the dozen different types of connectors, 5 different voltage levels, and 2 possible polarities. I want one PSU that can recharge everything.
There is no electrical contact *to* short out. It is using magnetism, not electicity. Pad generates alternating magnetic field above its surface. Put coil tuned to same frequency in field. Conductor in changing magnetic field generates current, so AC generated. Add rectifier, DC generated. I can see that the add-on to the mobile device will be cheap - a coil and 4 diodes. This could work.
One non-green point: How much power is dissipated with no devices on it, or with fully charged devices? But then, how much power is dissipated by plugged in "wall warts".
Consciousness is an illusion caused by an excess of self consciousness.
Excuse me, but I think there is definately a PRIOR art on induction. Or believe me - there definately would be patents and a lot of other hoopla. On a side note, my electric toothbrush has been charging wirelessly for about two years now. This is news?
Hey, another patentable feature: put the receiver in a Bluetooth mouse and use the charging pad as a mouse pad. Never EVER needs ANYTHING.
The cool thing is that "compatible" should be a non-issue. Each receiver will probably be fitted with an appropriately valued voltage regulator. The field produced by the mat won't have a "voltage" per se, but rather a "field strength." The receiver side will convert that to a voltage which will then be regulated as needed.
Hmm. I wonder if it'll even make a difference if the pad gets 120 or 220 volts?
John