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The Holy Trinity has arrived

Discussion in 'Android Devices' started by RaLeX, Dec 17, 2012.

  1. RaLeX

    RaLeX Well-Known Member
    Thread Starter

    I'm SO happy.

    The bumper does make the phone really wide... not sure if I'll use it.

    [​IMG]
     



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  2. Chaco

    Chaco Well-Known Member

    sell me the bumper then... my girl has been trying non stop to get it for xmas and hasnt been able to.

    seriously!
     
  3. hstroph

    hstroph Android Enthusiast

    What's the model of that Energizer Inductive Charger, please? I'm very interested in your impressions of its functionality.
     
  4. NeXuS4

    NeXuS4 Android Enthusiast


    I can't view... Can you post in some other format?
     
  5. RaLeX

    RaLeX Well-Known Member
    Thread Starter

    I don't have any other case and since I've had it for less than 24 hours I might just keep it on and try to get used to it. If in a couple days I find myself not using it at all i'll send you a PM.

    Amazon.com: Energizer Single Position Inductive Charger: Health & Personal Care

    i think i'm going to give my phone a couple normal USB charge cycles before i use it... just to make sure I get my battery working as well as possible.

    Done.
     
  6. hstroph

    hstroph Android Enthusiast

    That seems well-considered.

    The product description of "single position charger" taken in context with some user reviews makes it seem as if phone placement on the charging pad is critical? I don't find the Qi-certification logo anywhere on the Nexus 4 box or included documentation, and wonder if indeed (as rumored) that Google has quietly coerced LG to follow the competing PMA inductive-charging standard (Power Matters Alliance).

    I'll nominate you as a Local Inductive-Charging Expert by virtue of having the charging device.
     
  7. NeXuS4

    NeXuS4 Android Enthusiast


    That's just beautiful...
     
  8. hstroph

    hstroph Android Enthusiast

    Even more so if they all arrived on the same day.
     
  9. RaLeX

    RaLeX Well-Known Member
    Thread Starter

    got the bumper Friday. But I left it at work in a locker. Received the phone and the charging mat today at the same time. It was great.
     
  10. hstroph

    hstroph Android Enthusiast

    Proof-positive that there's a Merciful Mayan somewhere ... :smokingsomb: Hopefully the others will be so fortunate before the end of the world in 4 days.
     
  11. LoyalServant

    LoyalServant Android Expert

    I have charged my phone with a function generator and a coil of wire for giggles. :D

    Whatever "standard" they are using does not mean much if I can do what I was doing.
     
  12. hstroph

    hstroph Android Enthusiast

    Any "standard" is simply that; a baseline measure of performance against which any product can be compared consistent with others. A "standard" doesn't preclude you or any other individual from doing whatever you want.

    How about you take some pictures of your inductive-charging setup and post them with some data concerning the process, please ... enquiring minds want to know.
     
  13. LoyalServant

    LoyalServant Android Expert

    Very well... I suck at pictures so here we are...
    http://imageshack.us/a/img853/193/imag0042u.jpg
    And ...
    http://imageshack.us/a/img152/9428/imag0041as.jpg

    The coil is... well a coil.
    I am feeding this a 900Khz square wave @ 20V peak to peak.
    It charges slowly but it does charge :)

    I did it to see if I could and this was my first attempt and I nailed it .. probably by luck.
     
  14. thebryceee

    thebryceee Android Expert

  15. thebryceee

    thebryceee Android Expert

    I must say, this phone is B.A.
     
  16. hstroph

    hstroph Android Enthusiast

    Very impressive in its simplicity, and your choice of views is helpful. Of course the irregularity of the coil shape will affect the field strength, as will the number of windings (it's the primary coil after all) and especially the amount of current flowing through it as I'm sure you well know.

    I'd be curious to see an ammeter reading in between one end of the coil and the red or black clip connected to it. Also curious about your choice of the other parameters of frequency and voltage ... of course the hardware (wire gauge, connectors et.al.) limits the current.
     
  17. Liamo_210

    Liamo_210 Android Expert

    Love the way that charger has an iphone on the cover ;)
     
  18. 1080p

    1080p Android Enthusiast

  19. LoyalServant

    LoyalServant Android Expert

    Charger Mark II...

    http://img254.imageshack.us/img254/6866/imag0049qa.jpg

    I have to stress the CRUDITY of this...
    I whacked an RF transistor in there and backed the drive down to 1 volt peak to peak.
    At the collector of the transistor it's bumped up to about 70 volts peak to peak.

    It charges somewhat faster... but this is so crude its burning half the power in heat. :D

    Edit: waveform.... I got the peak to peak voltage wrong doh... see image.

    [​IMG]
     
  20. hstroph

    hstroph Android Enthusiast

  21. LoyalServant

    LoyalServant Android Expert

    This is so stupidly crude.. its astonishing that this crude junk works.
    I put no thought into this at all.

    I am thinking a ZVS supply... a real coil.... etc.
    I bet I can make a REAL one that is not total junk and basically a coil with a transistor that's going to pop :D

    I really don't think it needs to run @ 900Khz.
    My understanding is that some real ones only run at 100Khz.

    Or I might just let the blue smoke out of that transistor for fun :)
     

Nexus 4 Forum

The Nexus 4 release date was November 2012. Features and Specs include a 4.7" inch screen, 8MP camera, 2GB RAM, Snapdragon S4 Pro processor, and 2100mAh battery.

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