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Use USB to provide 3.3V power

Discussion in 'Electronic Design' started by Boki, Jun 2, 2006.

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  1. Boki

    Boki Guest

    Hi All,

    I have a power source - USB from PC.

    My embedded device is battery powerd, I want to remove this battery,
    and use PC USB's power.

    But it seems that USB is 5V -5V device, am I right?

    Should I buy a LDO or ?

    Best regards,
  2. Genome

    Genome Guest

    Well, you might start out by asking your service provider to stop its
    customers trying to use my computer as an e-mail relay.


  3. AZ Nomad

    AZ Nomad Guest

    Agree. I killfile everything from hinet as they cater to spammers.
    The OP should switch providers if getting an answer matters.
  4. Deefoo

    Deefoo Guest

    Take a look at the MAX8881. There is a USB example with it in the datasheet
    of the DS2490.

  5. Boki

    Boki Guest

    Deefoo 寫�:
    Thank you very much!

    Best regards,
  6. Pooh Bear

    Pooh Bear Guest

    Hinet is surely a piece of crap.

  7. I asked to join the linux team just recently, becuase I finished my
    project ahead of them 2 months ahead. But i used a USHORT when i could
    have used an unsigned char. Sigh, i wish my disk drive was faster....
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