Detect Power Failure

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  1. - 13th April 2009, 09:38 #1
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    Great!
    I would try it!
  2. - 13th April 2009, 12:18 #2
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    Will I use a Transistor to detect power on the USB Port?
  3. - 13th April 2009, 12:47 #3
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    Hi,

    If you are going to use a seperate 5v supply say the 5v from the other PC I would strongly recommend using an optocoupler to monitor the 5v.

    Bob
  4. - 13th April 2009, 13:26 #4
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    Thank you!!
  5. - 13th April 2009, 16:17 #5
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    Default Just an idea.

    What happen to the USB power rail if someone reboot the computer or shut it down for a short period of time (if at all possible or allowed)?

    In this case a simple wall-wart transformer would do the job too.
    Steve

    It's not a bug, it's a random feature.
    There's no problem, only learning opportunities.
  6. - 13th April 2009, 16:40 #6
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    Mister_e

    Would I still use the optocoupler if I rather want to use a transformer?

    Thank you

    Koossa
  7. - 13th April 2009, 20:28 #7
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    No real need for an opto-coupler in that case.
    Steve

    It's not a bug, it's a random feature.
    There's no problem, only learning opportunities.
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