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USB question

Discussion in 'Electronic Basics' started by aman, Apr 26, 2005.

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  1. aman

    aman Guest

    I know USB supplies 500mA at 5V. But somehow I need more current. I
    need USB to provide current to a logitech webcam and 12 LED's. I need
    a little more current. Any recommendations ? Can I drop the voltage
    somehow to 3V and draw more current at that voltage ?
     
  2. Lord Garth

    Lord Garth Guest

    Your LED array should use external power to gain the required current.
     
  3. John Bokma

    John Bokma Guest

    Lemme guess: IR LEDs?
     
  4. Don

    Don Guest

    One simple approach is to use a second USB port for the additional power.

    I recently bought a case with electronics to fit a small 40G drive into; it
    came with a Y at the computer end for plugging into two ports so it can be
    used with early USB ports that do not provide 500mA. If the computer is up
    to it, you should be able to draw 500mA from each.

    Don
     
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