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Thread: Walton USB wall socket

  1. #1

    Default Walton USB wall socket

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    Newly hit the mkt. Priced at 390bdt.
    R these safe to charge expensive smartphones and tabs on? I had read somewhere tht they do not deliver clean power and fluctuations may fry devices.

    So all electros - pls comment.

  2. #2

  3. #3
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    looks quite ok to me.

  4. #4

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    What is safety shutter?

  5. #5

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    Quote Originally Posted by minitt View Post
    looks quite ok to me.
    Can u elaborate some more - ipad, iphone samsung charge e diley ki noshto howar bhoi thakte parey

    - - - Updated - - -

    Quote Originally Posted by newgamer View Post
    What is safety shutter?
    Amar mone hoi oi plate er dui kinarey je shada moto pichhi dhakna ogular kotha bolsey style korey.
    Last edited by REVx; February 27th, 2015 at 00:24.

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    Quote Originally Posted by REVx View Post
    Can u elaborate some more - ipad, iphone samsung charge e diley ki noshto howar bhoi thakte parey

    - - - Updated - - -

    Amar mone hoi oi plate er dui kinarey je shada moto pichhi dhakna ogular kotha bolsey style korey.
    any usb device should work as long as total amp draw is around 1A or less.

    However this outlet won't be able to charge tablets or other devices that draws around 2 to 3A

    If u try to charge USB devices that draws more than 1.5A, the outlet may burn out.

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    My ZenFone 6's charger draws 1600mAh-1800mAh continuously while charging. Thus i find this socket useless.

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    Quote Originally Posted by minitt View Post
    any usb device should work as long as total amp draw is around 1A or less.

    However this outlet won't be able to charge tablets or other devices that draws around 2 to 3A

    If u try to charge USB devices that draws more than 1.5A, the outlet may burn out.
    not necessarily... but the circuit doesn't look that good anyway(component wise)

    - - - Updated - - -

    Quote Originally Posted by VANGUARD View Post
    My ZenFone 6's charger draws 1600mAh-1800mAh continuously while charging. Thus i find this socket useless.
    i thought the charger can only provide 1350mAH and one more thing current draw is measured in just amp not amp hour

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    Quote Originally Posted by redwan hasan View Post

    i thought the charger can only provide 1350mAH and one more thing current draw is measured in just amp not amp hour
    Akta app diye measure korsilam. And yes, you are right about mA

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    Quote Originally Posted by VANGUARD View Post
    Akta app diye measure korsilam. And yes, you are right about mA
    phone er app gular measurement usually oto valo hoy na btw ki name?

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    Quote Originally Posted by redwan hasan View Post
    not necessarily... but the circuit doesn't look that good anyway(component wise)
    Looks like a basic step down transformer with a regulator (can't see the regulator in the picture though.). If it is a linear regulator then it won't be harmful for the gadget but will get really hot. But if it is a switching mode one, like LM317 then the quality will depend mostly on output filtering caps. I don't see any problem with a simple setup like this when the current draw is within specifications.

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    Quote Originally Posted by redwan hasan View Post
    phone er app gular measurement usually oto valo hoy na btw ki name?
    nam vule gesi. Ki jeno, nemesis na blueprint battery, ai type er kisu akta naam.

  13. #13

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    Quote Originally Posted by redwan hasan View Post
    not necessarily... but the circuit doesn't look that good anyway(component wise)
    That.

    - - - Updated - - -

    Quote Originally Posted by VANGUARD View Post
    My ZenFone 6's charger draws 1600mAh-1800mAh continuously while charging. Thus i find this socket useless.
    And that.
    A smartphone like that shud b sucking juice over 1.5A

    - - - Updated - - -

    Quote Originally Posted by redwan hasan View Post
    phone er app gular measurement usually oto valo hoy na btw ki name?
    I used to use one Galaxy charging current lite.

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    Quote Originally Posted by Swapnil View Post
    Looks like a basic step down transformer with a regulator (can't see the regulator in the picture though.). If it is a linear regulator then it won't be harmful for the gadget but will get really hot. But if it is a switching mode one, like LM317 then the quality will depend mostly on output filtering caps. I don't see any problem with a simple setup like this when the current draw is within specifications.
    nope it's not a linear regulator, it definitely is a switching regulator. transformer is too small to be linear. So there is a good chance that it will have huge noise in its output and Nexus/Htc might not have any problem with it but Xperia/symphony won't work properly, pretty sure during charging via this touch won't work properly.

    btw LM317 is usually used as linear regulator not switching ones. Switching power supplies usually don't need a regulator like 317, a reference voltage and the switching transformer and the transistor or mosfet that feed the transformer is enough for achieving regulation.

    btw I agree with the part that even a small circuit designed with a LM317 or 7805 can do this job pretty nicely. Unlike switching ones, linear ones don't need good quality capacitors at the output stage so they will be fine.

    - - - Updated - - -

    Quote Originally Posted by VANGUARD View Post
    nam vule gesi. Ki jeno, nemesis na blueprint battery, ai type er kisu akta naam.
    khuje dekhbone.

  15. #15

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    Quote Originally Posted by redwan hasan View Post
    phone er app gular measurement usually oto valo hoy na btw ki name?
    Battery Monitor by 3c

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    Quote Originally Posted by Aasifz View Post
    Battery Monitor by 3c
    got it.

    Click image for larger version. 

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    its about half the capability of the charger :S pretty sure it's not that accurate.

  17. #17

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    Quote Originally Posted by redwan hasan View Post
    got it.

    Click image for larger version. 

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    its about half the capability of the charger :S pretty sure it's not that accurate.
    it's nearly accurate, but the actual problem is unshielded cables I guess, I have got 200mA flow on a samsung charger rated 0.7a with very flat cables, on the other hand I've got ~950mA on a walton 1A charger with shielded sony data cable, the app shows how much current-flow are you getting into your mobile, your charger maybe also capable but the unshielded cables might be causing the resistance. Just my two cents.

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    Quote Originally Posted by Aasifz View Post
    it's nearly accurate, but the actual problem is unshielded cables I guess, I have got 200mA flow on a samsung charger rated 0.7a with very flat cables, on the other hand I've got ~950mA on a walton 1A charger with shielded sony data cable, the app shows how much current-flow are you getting into your mobile, your charger maybe also capable but the unshielded cables might be causing the resistance. Just my two cents.
    how do u know its nearly accurate?

    and there is absolutely no relationship between wire resistance and shielding what so ever. Moreover USB uses digital means to communicate so it is less prone to noise and thus shielding is not that important anyway.

  19. #19

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    Quote Originally Posted by redwan hasan View Post
    how do u know its nearly accurate?

    and there is absolutely no relationship between wire resistance and shielding what so ever. Moreover USB uses digital means to communicate so it is less prone to noise and thus shielding is not that important anyway.
    I have got a usb cable it can carry over 2A at first then wihtin 1 minute it comes down to 180mA, what could be the cause then?

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    Quote Originally Posted by Aasifz View Post
    I have got a usb cable it can carry over 2A at first then wihtin 1 minute it comes down to 180mA, what could be the cause then?
    u r solely relying on the readings from the app, try a multimeter and see for urself.

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