USB slot voltage and Current drive specification??

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buts101

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usb voltage specification

Can usb can drive 2 channel speakers? What are the voltage and current drive specification. I see, mp3 player are charged through usb drive.

Best regards,
Buts101
 

usb drive voltage

Hi

According to the specs a USB device can't sink more than 500mA @5V if it's connected on the main hub or self powered hub.

and if the device is connected to a buspowred hub it can sink up to 100mA@5V.

If you neeed more power you must make your USB Device self powred and not Bus powred

you can check the usb specs @
www.usb.org

or for simplicity you can check
http://www.beyondlogic.org/usbnutshell/usb1.htm

and this link may help you too
**broken link removed**

Salam
Hossam Alzomor
www.i-g.org
 

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