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Thread: WHAT DO I DO WHAT DO I DO WHAT DO I DO WHAT DO I DO WHAT DO I DO Power Good

  1. #1
    Newbie
    Join Date
    Jul 2001
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    4

    Question WHAT DO I DO WHAT DO I DO WHAT DO I DO WHAT DO I DO WHAT DO I DO Power Good

    How do I get the power good line???
    my mobo needs it...

  2. #2
    Newbie
    Join Date
    Jul 2001
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    4

    Post

    HELP

  3. #3
    Newbie
    Join Date
    Jul 2001
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    Post

    HELP!!!!

  4. #4
    FLAC
    Join Date
    Jan 2001
    Posts
    1,612

    Post

    first: be patient, it's a friday night/saturday morning and some of us actually have lives

    second: the power good line is +5volts.


    try and be a little mor epatiwent next time

  5. #5
    Newbie
    Join Date
    Jul 2001
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    4

    Post

    Sorry for being inpatient...
    Umm...
    that is not so...
    The power good line is a 100-500milisecond pulse of five volts...
    I think, well, that's what this website said....
    just conecting 5volts doesn't work....

  6. #6
    FLAC
    Join Date
    Apr 2001
    Location
    Portland OR
    Posts
    1,244

    Post

    Step A:
    Try 5 volts and see if it works,

    Step B:
    use a cap and a resistor with the resistor tied to +5 and the minus side of cap tied to ground and the middle of them is the power good signal.


    Step C:
    use a buffer chip or 2 inverters with the R and C in the same manner.

    Remember, T = R*C
    Thats time equals Resistance times capacitance. wooo hooo!


    Jeff_
    MPEGBOX - Plexiglass Computer
    www.mpegbox.com

  7. #7
    Newbie
    Join Date
    Jul 2001
    Posts
    4

    Thumbs down

    I will try STEP B, but I don't think it will work......
    Hmm...
    any more ideas??

  8. #8
    Newbie
    Join Date
    Apr 2001
    Location
    NJ
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    40

    Post

    Hi Again SKINNY,
    The cap and resistor work just fine. That is what I have. Use a 1MEG resistor and a 1uF cap for a TC of 1 second.
    mike

  9. #9
    Constant Bitrate
    Join Date
    May 2001
    Location
    Australia
    Posts
    183

    Post

    Hey give the kid a break. My mobo didnt work even with a resistor+cap. In the end I needed to use and opamp to square up the pulse.

    Somebody else asked for the circuit. I'll post the diagram when I get back home after this weekend.

  10. #10
    Newbie
    Join Date
    Jul 2001
    Posts
    4

    Post

    How does a resistor and a capatitor give a pulse????

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