Wish
DX  » Community » Forums
«See all threads (in Product Forum)
Product Forum

7.4 x 5.0mm MALE???

  • matrix-neo Moderator Thursday, October 4, 2018 1:00 PM Reply

    @sheepish, that Dell connector accepts a pin on inner contact, so that makes it female?

    Resistance is futile-give in to DX gadget craving!
    also a voluntary mod-be nice please!
    Have an enquiry? https://cs.dx.com/ticket/index


    Posts(11989) | Reviews | Tip post

  • sheepish Top 10 Forum Poster Thursday, October 4, 2018 5:03 PM Reply

    It looks like it. It's definitely not a standard DC barrel socket (which is male!).


    But that means this is female on both ends, which presents a curious question. Power is almost always transmitted from female to male, whether it's a mains wall socket or low voltage DC barrel connectors. It's for safety. Why would Dell use a male to female transfer of power?

    Remembering 30 years.
    Posts(24945) | Reviews | Tip post

  • ozOzo Top 10 Forum Poster Friday, October 5, 2018 7:03 AM Reply


    @psilhan, My apologies. It was I who did not look carefully at the third photo of SKU: 339274 and did not notice the small hole in the centre. Although this could be described as a “coaxial” connector, it is, as sheepish pointed out, a generic proprietary type and not a regular coaxial or barrel connector as described in Wikipedia.

    I have not seen one of these fittings but if indeed that small hole in the centre is there to receive a pin which completes the DC circuit, that would certainly make this a female/female fitting. My only remaining doubt is that, because the diameters are shown as 7.4*5.0mm, there may be a metal sleeve on the outside of that inner plastic cylinder. If the pin that fits into that small hole is the conductor and not just there for stability, I would expect the size to be shown as7.5*1.6mm (or whatever the pin diameter is).

    Perhaps I am just clutching at straws though, in an attempt to justify an embarrassing mistake.  

    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
    Posts(7310) | Reviews | Tip post

    post edited by ozOzo on 10/5/2018 at 1:52 PM
  • sheepish Top 10 Forum Poster Friday, October 5, 2018 8:05 AM Reply

    it is, as sheepish pointed out, a generic type


    Far from generic, I would call it a proprietary Dell connector. It's somewhat similar to an RF connector, not a DC power connector. It's strange.


    I hate the lack of proper editing controls in the Stupid New Forum Interface. Like undo when the forum decides it's going to paste over everything instead of just what's selected.

    Remembering 30 years.
    Posts(24945) | Reviews | Tip post

  • matrix-neo Moderator Friday, October 5, 2018 9:53 AM Reply

    out of interest, does someone have a clear photo of mating connector? if it has a recess in middle, can the first photo of connector be considered both male and female since the inside connector probably has both male and female attributes? i've seen my fair share of faulty and loose dc laptop power connectors, any mechanical strain relief is always welcome, but from experience IBM/Lenovo seem to make the most reliable connectors

    Resistance is futile-give in to DX gadget craving!
    also a voluntary mod-be nice please!
    Have an enquiry? https://cs.dx.com/ticket/index


    Posts(11989) | Reviews | Tip post

  • sheepish Top 10 Forum Poster Friday, October 5, 2018 10:05 AM Reply

    does someone have a clear photo of mating connector?


    I tried to find one but failed. I did come across a poor quality photo that might have been it. There wasn't any sign of a central pin, which might imply this connector is a male with a urethra. Maybe that's taking the gender analogy too far.

    Remembering 30 years.
    Posts(24945) | Reviews | Tip post

  • ozOzo Top 10 Forum Poster Saturday, October 6, 2018 4:53 AM Reply

    Oh bugger- I did say generic didn't I... corrected that.

    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
    Posts(7310) | Reviews | Tip post

Page 2 of 2
Go to Page:
«Reply to this thread (in Product Forum)
Product Forum

Reply

Subject:

* 50 characters max

Message:

Please note: HTML codes are not allowed anywhere on this page (otherwise you will see an error).

Please note that DealExtreme Forums are not a sales or product support board. While we do constantly participate in this forum, please contact us via support ticket for a guaranteed fast response. We make every effort to make the quickest replies.

DX Everywhere