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Wireless Charging your Handhelds?

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?

58 of 235 comments (clear)

  1. cool by Joe+the+Lesser · · Score: 4, Funny

    This is definitly better then their first idea, which of course was the 'Jump-to-Conclusions' mat.

    --
    "I only speak the truth"
    Karma: null(Mostly affected by an unassigned variable)
  2. Sounds like a great idea.... by Randolpho · · Score: 3, Funny

    ... until everyone's head explodes from all the radiation. ;)

    --
    "Times have not become more violent. They have just become more televised."
    -Marilyn Manson
    1. Re:Sounds like a great idea.... by fulldecent · · Score: 2, Informative

      magnetism has not yet been directly related to radiation poisioning

      --

      -- I was raised on the command line, bitch

    2. Re:Sounds like a great idea.... by Zathrus · · Score: 4, Informative

      Well that's not likely, but people with pacemakers are likely to fall over dead if they get too close to one of these mats.

      Pacemaker + powerful EM field = powerful EM field + corpse.

      I have no idea how close too close would be though...

    3. Re:Sounds like a great idea.... by TummyX · · Score: 3, Informative

      Um. Hate to tell you this but that monitor you're sitting infront of has an EMF and so does the planet you're sitting on.

    4. Re:Sounds like a great idea.... by hurtta · · Score: 5, Informative
      ... until everyone's head explodes from all the radiation. ;)
      magnetism has not yet been directly related to radiation poisioning
      • Well, also light is radiation.
      • radiation is not necessary same than radioactive
      • variable magnetic field -> variable electrical field == this (combination) is electro-magnetic radiation
      • How about micro wave oven?
      • However; energy levels are probably LOT smaller
    5. Re:Sounds like a great idea.... by Randolpho · · Score: 4, Funny

      What? OMG!

      Turns off compu-

      --
      "Times have not become more violent. They have just become more televised."
      -Marilyn Manson
    6. Re:Sounds like a great idea.... by Anonymous Coward · · Score: 2, Insightful
      I wonder how the cancer rates will look like in 80 years...
      Much lower than today's, probably, as smoking rates will fall and car emissions will be more tightly controlled.

      This assumes you don't live in a country that the US wants to spray with uranium, of course.
    7. Re:Sounds like a great idea.... by sfe_software · · Score: 4, Informative

      ... until everyone's head explodes from all the radiation. ;)

      I know you meant this in humor, but all this basically does is take a standard AC power transformer, and split it into two parts. The "primary" coil is in the charger unit, while the "secondary" coil is in the unit itself. Placing the two cores close to each other will complete the transformer.

      I think it's great. If everyone can standardize on the specs, we can have a single charger for many items. Imagine only having to buy one car charger for all (most) of your portable devices.

      This would NOT be a good idea for something that is magnetically sensitive, as it would effectively erase floppy/hard disks, cassette tapes, etc...

      The "radiation" would be the same that you'd get from any standard "wall wart" plug-in transformer.

      --
      NGWave - Fast Sound Editor for Windows
  3. Are you watching USPTO? by Boss,+Pointy+Haired · · Score: 2, Insightful

    THIS is the sort of thing that is worthy of a patent.

    Not Bezos and his f****** 10 lines of HTML.

    1. Re:Are you watching USPTO? by kenthorvath · · 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?

    2. Re:Are you watching USPTO? by MyGirlFriendsBroken · · Score: 2, Funny

      Similar stuff like this has been done before and is already in the market place. For instance the key fob on new BMW never needs the battery changing as it is recharged by induction when it is in the ignition. I don't know if this would affect a patent on this device though

      --
      If you read a speed reading book, does it take you less time to read the second half?
    3. Re:Are you watching USPTO? by eXtro · · Score: 2, Funny

      Well, I would argue that it either already is patented or it's too late to patent. I have a Panasonic shaver that uses inductive charging. There's no receptacle on my shaver it just sits in a device and charges without wires. This mat is only an expansion of this concept.

    4. Re:Are you watching USPTO? by seanadams.com · · Score: 2, Funny

      THIS is the sort of thing that is worthy of a patent.

      Yes, I can see it now... "method and device for transmitting power by means of inductive coupling".

      Here's a clue: the transformer been around for about as long as we've known about electricity.

      ALso, the idea of using a transformer as the coupling for a charger base has been around for as long as I can remember. As a kid I had an electric toothbrush that did this. It's a great idea for something like a toothbrush, because it's harder to waterproof an electrical contact.

    5. Re:Are you watching USPTO? by rzbx · · Score: 2, Informative

      "The technology developed by SplashPower is based on the principle of magnetic inductive power transfer.

      Inductive charging systems are already used in products like rechargeable electric toothbrushes."

      They based it on a principle they did not discover. The technology already exists and all they did was make a slight improvement. So they deserve to own the rights to the technology all of a sudden?

      Personally I'm against all patents (Based on many many many many hours of reading about the subject). Yet, I know most people do not agree with that. Still, what is so new that they did here to get a patent if you really believe in it? Slight improvement? If you did some reading on the legal side of patents you'd see that for one they would be infringing on a patent if one existed for the technology already. Second, if they did receive one, due to the way lawyers seem to do things, they could charge royalties on all those previous products similar to theirs. Don't think so? The companies that have to pay royalties have two choices. One is pay up in royalties, or second is pay up in legal fees to fight the patent, which will cost many times more than the royalties themselves. The rate at which companies spend on legal fees is increasing constantly. Less is put into technology investment due to this, or the cost is just passed to the customers.

      How much do you really know about patents to make such a statement as you did?

      --
      Question everything.
  4. Sounds Great by Martok7 · · Score: 4, Interesting

    Sounds great, but I wonder how slow the charge time is and how compatible it is.

    --
    I never liked you
    1. Re:Sounds Great by CynicTheHedgehog · · Score: 2, Informative

      The article says that devices will have to install a module (less than a millimeter thick, and costing about $0.25) in order to make use of the pad. And as long as I get a day of use out of my device, I don't care if it takes all night to charge.

      This is an awesome innovation and just the excuse I've been looking for to upgrade my cellphone :)

    2. Re:Sounds Great by plover · · 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?

      --
      John
  5. Dumb Question by boatboy · · Score: 5, Interesting

    OK, Dumb Question: Why doesn't it short out easily?

    1. Re:Dumb Question by Anonymous Coward · · Score: 3, Informative

      Duh! There are no exposed wires TO short out! The mat sets up an alternating magnetic field and the device being recharged converts that magnetic field back into whatever voltage it needs for its batteries. It's an over-glorified transformer without an iron core!

    2. Re:Dumb Question by 0x4B · · Score: 2, Informative

      maybe I'm missing your point, but placing objects on the mat doesn't complete a circuit. the mat produces a magnetic field, objects in the field are irradiated and recieve energy.

    3. Re:Dumb Question by cdrudge · · Score: 4, Informative

      Um...not quite sure what you are asking. There is nothing to short out...well, actually there is internally, but you just lay your device on it and it charges it inductively assuming that you have the SplashModule "receiver" inside your device to "receive wireless power".

      Are you confusing conductive with inductive? Inductive is using EMF to transfer the power. I'm starting to see more and more things use inductive recharging systems. I've had a razor that used it as well as many electric cars use it I believe.

    4. Re:Dumb Question by Glen+Ponda · · Score: 4, Funny

      OK, Dumb Question: Why doesn't it short out easily?

      Uh, it like, uses technology, or something.

    5. Re:Dumb Question by AlecC · · 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.
    6. Re:Dumb Question by Smallpond · · Score: 4, Interesting


      Not a dumb question. Magnetic circuits can be shorted just like electrical circuits. In fact, proximity sensors work because any metallic object absorbs enough energy to be detectable by its electronics. In this case, I assume they have done their homework and made the energy field low enough not to fry your hand if you are wearing a wedding ring, say.

    7. Re:Dumb Question by brakk · · Score: 3, Informative

      The principal is the same thing that makes the current charger for your phone or power supply for your laptop work. They all have a transformer inside to step down the voltage coming from the wall. 110VAC goes through one coil in the transformer which is held close to another coil that is wrapped different so you get a lower AC voltage out the other side. There is no electrical connection, but since it's AC power, it creates a magnetic field that is picked up by the second coil. Then, it's just run through a rectifier and a filter to convert it to DC voltage to plug into your phone.

      This is also the same concept that makes security badges at the last two companies I've worked for function. You get a sealed plastic badge that you just hold up next to (within about 5 inches) a "block" on the wall and it reads the data off it. The badge doesn't have a battery in it but is still able to transmit and never runs down. It works because the "block" is transmitting a low frequency radiation that is picked up by a coil in the badge which supplies power to it. That activates the circuit built into it (that has a number hard coded into it) and a tiny radio transmitter that transmits the number back to the "block" on a higher frequency. Both the badge and the "block" are encased in plastic and have no electrical connection to each other.

  6. Re:Emf? by aallan · · Score: 3, Informative

    Still, I wonder if this "pad" comes with a warning not to leave credit cards, etc. near it?

    If you'd taken the time to read the article, you'd have seen that it says that the pad "...will not even wipe credit cards if you accidentally put one on the pad".

    Al.
    --
    The Daily ACK - Eclectic posts by yet another hacker
  7. 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.

  8. Works for my toothbrush, why not? by Enry · · Score: 5, Informative

    Sonicare toothbrushes (teethbrushes?) can already do this, and there are a few other bathroom-type things (elec. razors) that have this capability. This allows the items themselves to be sealed, so you can drop it in the sink, etc. without destroying it.

    1. Re:Works for my toothbrush, why not? by cswiii · · Score: 4, Funny

      Oh, we all know that /.'ers never leave the computer anyway... so why not just use a USB toothbrush instead?

  9. damage by Anonymous Coward · · Score: 2, Interesting

    Could the elctro magnetic field not cause damage to sensitive electronics, especially things like flash memory?

  10. Emf? Not a problem, apparently by mooZENDog · · Score: 2, Interesting

    Still, I wonder if this "pad" comes with a warning not to leave credit cards, etc. near it?

    Having read the website, they're saying that it's no trouble for credit cards. If they have to keep the power levels low, then it may hamper the device's usefulness. Perhaps they could have variable speeds, perhaps you could crank it right up and fry eggs on it! Toasty :)

    --

    ---
    "An eye for an eye leaves the whole world blind" - Gandhi
  11. Re:Emf? by aminorex · · Score: 5, Funny

    The article actually addresses this very issue.
    Using actual words. They were in English too,
    amazingly, so that anyone who read the /. article
    could also read those informative little squiggles.

    --
    -I like my women like I like my tea: green-
  12. I don't know by 2names · · Score: 3, Funny

    If it is strong enough to charge power sources through the case, wouldn't the plate in my head cause me to be stuck to the thing?

    --
    "I'm just here to regulate funkiness."
  13. Cool by codeonezero · · Score: 3, Interesting

    I've been waiting for something like this since I was in my Physics lab class playing with magnets flux and copper coil.

    If true this could be awesome :)

    Wouldnt there be a problem with devices with magnetic drives though? I'm guessing either those devices have to be shielded, or they have to be devices not using magnetic drives (say compactflash cards, or optical drives...) ?

    --

    ....
    int main (void) { ... }

  14. Finally, the future is here by Harald+Paulsen · · Score: 3, Insightful

    One step closer to eliminating all those wires clogging up my desk. A laptop-PSU, a cell-charger, a charger for my Jornada 720, a charger for my wireless mouse. All could be replaced by a mat.

    I imagine this would be useful in a car as well.

    --
    Harald
  15. Big Deal. by Lumpy · · Score: 4, Informative

    I've had one of these for a tablet PC for over 10 years now. Toshiba released one for doctors for their tablet PC's back in the mid 90's

    Got it with an auction I won that had 20 of those 486 tablet Pc's that used wacom tablets behind the screens for the pointer. Neat device.

    --
    Do not look at laser with remaining good eye.
  16. not very efficient by hottoh · · Score: 2, Interesting

    Yeah it is a cool idea. Long ago I had a rechargeable electric toothbrush that had a induction field charger. So the concept is not 'new' to the marketplace.

    Lastly they technology is not very efficient. I recall that it is less than half as efficient as a transformer [aka, adapter].

  17. Lights on ThinkGeek have this by Bander · · Score: 5, Informative

    Charging by magnetic induction. They say, "like magic or something"... Har har. Kinda cool:

    http://www.thinkgeek.com/gadgets/lights/5cf5/

    (I'm not trying to sell you these, I'm not affiliated with ThinkGeek, yadda yadda...)

    -- Bander

  18. Along these lines... by xXunderdogXx · · Score: 4, Interesting
    One thing I always dreamed about when I was studying EM radiation in first year chemistry was how awesome it would be to somehow grab power out of directed EM radiation. Just imagine all the useful things that would come out of such a technology:
    • No more power lines
    • No more batteries
    • Completely wireless monitors (without recharging)
    On a side note, I've always wanted wireless headphones that could be used for a walkman. So you'd just have to put tiny earbuds in your ears and leave your mobile audio device in your pocket.. I always figured this isn't feasible because of the power requirements.
    1. Re:Along these lines... by eXtro · · Score: 4, Informative

      Nikola Tesla proposed this around 1890 or so.

  19. Easier solution... by ryanvm · · Score: 3, Funny

    Just put your Palm Pilot in the microwave for 30 seconds. Works for me.

    Oh wait - I didn't say turn it on!

  20. It Works for Great Toothbrushes by Schlemphfer · · Score: 4, Interesting
    I bought an Interplak toothbrush about five years ago, that I think uses the same kind of technology seen here. It worked great, and I was able to use that toothbrush every day until I dropped it on the floor last week. This kind of charging solution is ideal for something like a toothbrush, which is likely to get wet and be a supreme electrocution hazard if plugged directly into a wall.

    Anyway, this technology worked so well that I'd think this is almost an obvious idea for recharging electronic items, especially if it's not going to screw up hard drives and electronic media. So the question is, why haven't other companies taken this technology beyond toothbrushes?

    Overall, I was disappointed by the BBC article. It would have been great if the author had sought out an EE authority, and had her/him mention the disadvantages of this charging approach. I have a feeling that this charging solution is likely incredibly wasteful of electricity. But maybe this waste doesn't matter much if you're talking about minor charging needs like cellphones. Anyway, surely there's somebody on here with a EE background who can speak to whatever shortcomings are inherent in this technology.

    --
    I'm generally "Interesting," "Insightful," and even "Funny" here. What the hell happens to me at parties?
  21. Integrate this with seat warmers by FuzzyDaddy · · Score: 4, Funny
    Volvo's come with seat warmers. Add one of these, and charge your cell phone as you drive!

    Of course, as long as you don't mind putting your future progeny's genetic material on and induction coil...

    Hmm. Nevermind.

    --
    It's not wasting time, I'm educating myself.
    1. Re:Integrate this with seat warmers by swillden · · Score: 2, Funny

      Of course, as long as you don't mind putting your future progeny's genetic material on and induction coil...

      Not a problem. Given the way I feel right now about my four "past progeny", there ain't gonna be no future progeny, no way, no how.

      Yes, the two year-old got into my books and CDs. Again. But now he knows how to open the shampoo bottle. And after the yesterday's incident with my wife's computer and the peanut butter...

      --
      Note to ACs: I usually delete AC replies without reading them. If you want to talk to me, log in.
  22. Similar Product by johnkoer · · Score: 5, Informative

    MobileWise has a similar product.

    I saw both of these reviewed on TechTV because they were at the CES show a couple of months back.

    They seem pretty cool but I really do not want to see the pricetag.

  23. Re:What would this do to portable fuel cells? by Oculus+Habent · · Score: 4, Informative

    I'd be much happier carrying around ink cartridge (pen, not printer) sized plastic tubes of alcohol or hydrogen, as long as there are standard sizes. We've had AA, AAA, C, D and more for decades. I inderstand that portable devicees have their own special shape issues, but a single style of fuel cell would be a huge help.

    Motorola developed an alcohol-based battery replacement in early 2000, but no word since then.

    --
    That what was all this school was for... to teach us how to solve our own problems. -- janeowit
  24. Why not just build this into the carpeting? by BreadMan · · Score: 3, Funny

    Then you could get conductive shoes, socks, pants and just charge the devices as you carry them around! You'd be sterile, but that's a _small_ price to pay for not having to cradle your phone.

    1. Re:Why not just build this into the carpeting? by Quill_28 · · Score: 4, Funny

      > You'd be sterile

      And that would matter around here why?

      Just a joke. Move along.

  25. Gadgets with frickin' "laser beams" by irving47 · · Score: 2, Interesting

    It's a pipedream, but I always thought it would be interesting to put together a cordless mouse that has a few small solar cells in it that you could aim a laser (or maybe a focussed, white LED) at from it's little USB receiver and charge the batteries wirelessly that way. Problem is, solar cells are so inefficient, it would probably take a week or two just to get one charge...

    --
    I had a sucky sig.
  26. Six months in the future..... by hplasm · · Score: 4, Funny

    "Aargh! My charging mat has attracted the steel plate in my skull! Someone get this thing off of me!!!"

    --
    ...and he grinned, like a fox eating shit out of a wire brush.
  27. Dream on. by twitter · · Score: 2, Interesting

    Do you think the makers of those devices are going to use this? They could be using standard battery sizes if they wanted to eliminate all those wires. It's a backward concept anyway. Devices should not be good devices not battery chargers. I've tried very hard to avoid silly devices that use non-standard batteries but I now own four and feel like I'm going backward in time.

    --

    Friends don't help friends install M$ junk.

  28. Use as mousepad by sjonke · · Score: 4, Funny

    You can also use it as a kind of "holistic mousepad". Improves tracking and cures wrist pain at the same time.

    --
    --- What?
  29. Tesla by luzrek · · Score: 2, Informative

    This sounds quite a bit like Tesla's original idea for the distribution of electricity, but at a more practical level. Tesla's idea was that a huge tesla coil would sit in the middle of a town and all electronic devices would be powered off of the very high frequency EM pulses from it. The two major problems (ok, three if you count the tesla coil) were that there was no way to meter usage, and the 1 of distance squared fall off in intensity once you got a resonalbe distance from the coil. The charging pad solves these problems. However, I think it will waste a bit of electricity. It would be better to have a charging "box" so less energy gets wasted.

    --

    Galium Arsenide is the material of the future, and always will be.

  30. The whole thing's a con by Perianwyr+Stormcrow · · Score: 2, Funny

    The only way to solve the patent problem is to remove the patent office's requirement to be self-funding. That way, there's no incentive for them to accept bad patents just because it pays.

    Nothing else in patent reform matters before that is resolved.

    --

    What we call folk wisdom is often no more than a kind of expedient stupidity.-Edward Abbey

  31. Re:Panasonic wireless DECT system phones by troc · · Score: 2, Informative

    Yep - and my Braun electric toothbrush is as well.

    The idea isn't inventive (so stop all the patent whinging now ;)

    Troc

    --
    Troc's dubious podcast and blog: http://www.trocnet.net
  32. The barrier isn't technological... by cgenman · · Score: 3, Interesting

    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?

    The reason there are so many different chargers is intentional incompatibility. Splash Charge themselves shows evidence of this, as they intend to charge "between 25 and 50 dollars" when this ships. How much does a replacement AC adapter cost you? About 10 - 20 dollars in a normal device. How much does it cost the company? Pennies.

    Besides voltage settings (12 volts would be pretty even), there is no reason why device manufacturers couldn't have standardized on an 4-mm sized center positive 1.0 Amp plug by now. The ability to charge multiple devices at once is interesting, though one has to wonder how strong such a device could be with a reasonably sized wall wart.

    The technology is very cool and I look forward to using it someday. But I expect once that day comes, it will be a propreitary charging pad, able to fit only a specific device thanks to some unnecessary plastic tabs.

  33. re: magnetically sensitive by benjamindees · · Score: 3, Interesting

    Is that why laptops have an external transformer "brick", or is that just for convenience?

    --
    "I assumed blithely that there were no elves out there in the darkness"