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External power?

  • lk0001 Tuesday, April 25, 2017 9:35 PM Reply

    http://img.dxcdn.com/productimages/sku_48268_2.jpg

    I see a little hole on a side of this hub. Is it power supply connector? Will 3,5 mm connector jack  fit for this?

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  • sheepish Top 10 Forum Poster Wednesday, April 26, 2017 6:48 AM Reply

    Will 3,5 mm connector jack  fit for this?


    It looks more like a 5.5 mm coaxial DC socket. What sort of connector are you thinking of?

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  • lk0001 Thursday, April 27, 2017 9:31 AM Reply

    Why do You think so? Have You seen this hub alive?
    The connector type isn't very important for me. I can solder anyone myself.
    Is there a power-supply decoupling inside?

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  • sheepish Top 10 Forum Poster Thursday, April 27, 2017 9:49 AM Reply

    I'll defer to @ozOzo and his pixel counting.

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  • Maye_Tao @DX Staff @DX Staff Friday, April 28, 2017 9:37 AM Reply

    Hello @lk0001

    Will 3,5 mm connector jack  fit for this?

    Yes, it will.

    Be happy. ( *^_^* )
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  • ozOzo Top 10 Forum Poster Friday, April 28, 2017 11:42 AM Reply

    @Maye_Tao
    I think some clarification is needed here as to what type of jack this hub has. If I understand lk0001's query correctly, he wants to know if supplementary power can be supplied from a mains adaptor (for instance SKU: 157847) to the hub.

    When speaking of a 3.5mm plug, it usually refers to a TRS or TRRS A/V connector. It is most unlikely that this type of plug would be used for power supply in this situation, if in fact that is the purpose of the jack. The connector usually used for that purpose is a coaxial (Barrel) connector, most commonly 5.5 x 2.1mm.

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  • sheepish Top 10 Forum Poster Friday, April 28, 2017 11:58 AM Reply
    When speaking of a 3.5mm plug, it usually refers to a TRS or TRRS A/V connector.


    Yes, and hence my question in my initial post above. 5.5 x 2.1 mm is by far the most common, but there are smaller ones sometimes used. In the 3.5 mm size I see there are 3.5 x 0.9 mm, 3.5 x 1.1 mm, 3.5 x 1.3 mm, and 3.5 x 1.35 mm. Not all of those will fit.


    If it's a 3.5 mm coaxial socket, which one of those is it? And is it connected for power delivery to the USB sockets?

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  • lk0001 Saturday, April 29, 2017 6:53 AM Reply

    Will this connector fit for the hub? 1,3 х 3,5 х 9 mm.

    https://www.chipdip.ru/product/kls1-dcp-02-1.3a-np-116

    DOC001189626.jpg

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    post edited by lk0001 on 4/29/2017 at 8:16 AM
  • lk0001 Saturday, April 29, 2017 8:03 AM Reply

    I wanna buy some USB hub, with  external power support.
    I already have some power supply units, with 3.5x1.3 male DC connectors, maybe something else. 
    I want to choose a suitable hub.
    A hub with a power-supply decoupling is very preferred for me.

    powered-usb-schematics.png

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    post edited by lk0001 on 4/29/2017 at 8:22 AM
  • ozOzo Top 10 Forum Poster Saturday, April 29, 2017 10:00 AM Reply

    Yes lk0001, I'm aware there are 3.5mm coax connectors but prior to my earlier post, there had been no mention of what type of jack this was. When referring to coax connectors, BOTH diameters are usually given, for the very reason sheepish mentioned. There are at least 3 internal diameters that need to be matched and it's no use guessing that it may fit the size you have. That is why I would await Maye_Tao's reply before buying. I still think the hub most likely has a 5.5mm x 2.1 coax.

    Worldwide 4G bands list:
    http://en.wikipedia.org/
    wiki/List_of_LTE_networks
    Worldwide 3G bands list:
    https://en.wikipedia.org/
    wiki/List_of_UMTS_networks
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    post edited by ozOzo on 4/29/2017 at 10:01 AM
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