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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Mon Sep 26, 2011 9:59 pm Post subject: A little OT, USB ports |
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It is for a home theater device so it's not to far off. IT's a audio adapter/decoder that get's it's power through a mini usb connector. The other end of the connector cable is a full size usb connector that plugs into a xbox, ps3 or a pc for power. The question is, are all usb ports created equal? I want to use/connect this to my LG flat screen. The LG does have a full size usb port. Will that port have the 5 vdc that I need for the device? If that doesn't work, I'll have to order a 5 vdc usb wall wart.
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Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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MikeEby
Joined: 24 Jun 2007
Posts: 5237
Location: Osceola, Indiana
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Tue Sep 27, 2011 5:23 am Post subject: |
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Try it and fry it 
Go for a powered USB hub with a 2 amp power supply. I see those cheaper than the 'proper' USB wall warts sometimes.
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Tue Sep 27, 2011 9:36 pm Post subject: |
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Ive assembled some gadgets with USB connections and as far as I am aware most USB ports all have 5vdc. If they didn't keyboards wouldn't work 
Like analog said, try it and see what happens 
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jask
Joined: 17 Mar 2006
Posts: 10187
Location: kamloops BC
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| Posted: Wed Sep 28, 2011 7:12 am Post subject: |
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If it is less than 500mA you should be fine.
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Wed Sep 28, 2011 10:24 am Post subject: |
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The device is a Turtle Beach EarForce DSS. I just looked up the power supply specs and it lists 5 vdc @120mA.
Aftet looking at the specs for various versions of the full size USB connector, they all show the same pin-out (4 pin)
with the outer two pins being power and the inner two being data.
I don't know if construction for these is all the same but a quick glance of the socket tells me you DON'T want to attempt probing for power as the surround for the socket is metal. I doubt you could test it without shorting to the case.
So I gues it will be "turn and burn" or "burn and return" or something like that
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