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Thread: Mastero MK-4 ATX PSU with features.

  1. #1
    FLAC Mastero's Avatar
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    Smile Mastero MK-4 ATX PSU with features.

    Hello friends,

    I have just finished the MK-4.

    Specification:~

    +03.3v @ 6amps (max)
    +05.0v @ 12amps (max) not shared
    +12.0v @ 5amps (max)
    +05.0v @ 5amps (max) standby
    -05.0v @ 100 milli amps (max)
    -12.0v @ 100 milli amps (max)

    Features:~
    Built in shut down controller.
    Low battery detection.
    Automaticly activates shut down conroller when battery goes below 11.0vdc.
    Input range 8 ~ 16 vdc.
    Survives Engine crank with no problem.
    Uses all national chips for voltage converting.
    LED indication
    RED (low input battery)
    YELLOW (Stby on)
    GREEN (PSU active)
    Fits normal ATX psu case.
    Powers up EPIA boards (jumper Setting onboard)

    Status:~
    Feild test ongoing.

    Shall post more details like PCB layout, component layout etc soon after testing is done....

    Cheers
    Mastero

  2. #2
    Low Bitrate mscar's Avatar
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    Cool features. Great work man.
    :: MSCAR ::
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  3. #3
    Maximum Bitrate PORTUGAL's Avatar
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    Opus solutions better watch out....
    Here in Portugal we have great weather, lots of brunnets, party a lot,drink a lot....
    http://img138.echo.cx/img138/896/bannerjoshua5dy.jpg

  4. #4
    It ain't easy being a green moderator meddler's Avatar
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    @Mastero. Is there any possibility of a add on board or modification to the circuit to have a higher amp capacity on the 12V line? I thought I would ask while you are still in the design / testing phase.
    Keep up the excellent work!
    Never let the truth get in the way of a good story

  5. #5
    Raw Wave rando's Avatar
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    Wicked cool! I've been combing over all the old sproggy threads this week and just ordered most of the parts for the mk-3.5. I guess I'll hold off on assembly until the new PCB and/or schematic is posted.

    I'm glad to learn that this version doesn't share the +5v as that appeared to be the glaring weekness of the mk-3.5.

    Mastero, were there any changes to the PG signal generation or will the new version use the same circuit?

  6. #6
    Low Bitrate
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    That sounds spectacular, Mastero! Well done!

    Are there any 'special' / hard to get parts that we must start hunting down?

  7. #7
    Low Bitrate
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    too bad it does not have a startup controller.

  8. #8
    MySQL Error MatrixPC's Avatar
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    I been working with Mastero on this for over a month. I am glad the light is on. Yeahhhhhhhhh
    Rando, if you want to see the sproggy 3.5 in action. Come to the Socal meet. My custom sproggy is the combination of Mk3.5 and the new Mk4 (12v section).
    The 12V on MK4 (as on mine) provent to work on 2 WD HD 0.24A each and 2 16X DVD ROM 2A each. All amp listed are for the 12V. Yes I am not crazy to run 2 DVD ROM but that is for testing only.
    As of survial cranking. Well, At 8V during cranking the PSU still running fine, but my Supra can't start at that voltage.
    Those of you who can't wait for Opus, Sproggy is your other option, much cheaper and probably as good as Opus or maybe better.
    2004 Matrix XR A7N8X-VM/400 AMD XP-M 2500+, DS-ATX
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  9. #9
    Constant Bitrate
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    sounds good i will be interested in this one. Which chip are you using for the +12v?

  10. #10
    MySQL Error MatrixPC's Avatar
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    Quote Originally Posted by cheesyhoward
    sounds good i will be interested in this one. Which chip are you using for the +12v?
    Quote Originally Posted by mastero
    Uses all national chips for voltage converting.
    2004 Matrix XR A7N8X-VM/400 AMD XP-M 2500+, DS-ATX
    89 Supra Turbo P3 600E@750/Abit BE6 II, Alpine M-BUS Car2PC.
    Y2K Accord Dell GX150
    RoadRunner is the best FE PERIOD
    EmoRebellion is a SCAMMER

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