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Thread: What Keypower uses...

  1. #1
    Variable Bitrate
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    Post What Keypower uses...

    I was checking the website of SPS-House (www.sps-house.com) the company that actually makes the SPS-DX250H power supply (marketed by Keypower in the US) and found out in their specification page that they use the following main components:

    MAIN COMPONENTS:
    MOSFET IRFP064N x 2
    SCHOTTKY DIODE ESAD83-004 (60A 40V) x 4 FOR +3.3V, +5V OUTPUT.
    FAST DIODE C16P20F (16A 200V) FOR +12V OUTPUT
    7905 FOR -5V @ 1A

    I already have one of these PSUs, but now that we know what they are using, I was wondering...
    How easy obtainable are these components, and if anybody out there has the knowledge to design schematics for this PSU and willing to post them.
    It would be nice to have a cheaper alternative with these specs.
    Or even build a smaller-chopped version (with less Amps per rail) for those with bookPCs etc...

    Regards,
    Dimitris

    [ 11-30-2001: Message edited by: Dimitris1976 ]

  2. #2
    FLAC
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    Post

    Originally posted by Dimitris1976:
    <STRONG>
    It would be nice to have a cheaper alternative with these specs.
    Or even build a smaller-chopped version (with less Amps per rail) for those with bookPCs etc...
    [ 11-30-2001: Message edited by: Dimitris1976 ]</STRONG>
    I think the only real main component that you left out here and the only one that really matters is the transformer. See if you can find out what it uses for a transformer and see if you can find out who makes it. The Fets and Diodes are easy to find.
    MPEGBOX - Plexiglass Computer
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  3. #3
    Variable Bitrate
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    Post

    Originally posted by Jeff Mucha:
    <STRONG>

    I think the only real main component that you left out here and the only one that really matters is the transformer. See if you can find out what it uses for a transformer and see if you can find out who makes it. The Fets and Diodes are easy to find.</STRONG>
    Excuse my ignorants since I'm a newbie to electronics, but what is a Fet?
    24 y/o w/ Silver/Red
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    http://www.squeezer.net

  4. #4
    Constant Bitrate
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    Post

    MAIN COMPONENTS:
    MOSFET IRFP064N x 2
    The Fets or Fet = Mosfet

  5. #5
    FLAC Mastero's Avatar
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    Post

    Hey guys i spoke the people and they gave me a cool price for the PSU ... really cool

    below is wat they mailed me

    XXXXXXX
    We are very pleased to hear from you. Can you tell me how you find us?

    We can offer sample price for you if you will order sample for testing. The price for 100-500 you mean annual right?

    The price offer as below base on the every shipment:
    SPS-DX250H(ATX)
    Sample 150usd.
    10 PCs 110usd.
    50 PCs 105usd.
    100 PCs 100usd.

    SPS-DX100Q (AT)
    Sample 90usd.
    10 PCs 75usd.

    If you have any question please feel free to contact with us.

    Kind Regards,
    B.F.


    I like the price so i guess if you guys gonna for bulk order i can ask them to reduce the price.

  6. #6
    Raw Wave Rob Withey's Avatar
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    Post

    Originally posted by Squeezer:
    <STRONG>

    Excuse my ignorants since I'm a newbie to electronics, but what is a Fet?</STRONG>
    FET = Field Effect Transistor. MOSFET = Metal Oxide Semiconductor Field Effect Transistor. Works on a different principle to bipolar transistors, and requires very little gate current to operate (much higher gains, meaning high switching currents for little gate current, and very little power dissipation also).


    Rob
    Old Systems retired due to new car
    New system at design/prototype stage on BeagleBoard.

  7. #7
    Variable Bitrate
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    Question

    If I open up my PSU and post some pictures of the inside of it, could you tell what I have to look for?
    I know what at a transformer looks like but, do they have part numbers on them (so that we find transformers with the same winding as parts) or you think they are custom made for this particular application by SPS-House?

    Mastero:
    You e-mailed SPS-House?

  8. #8
    FLAC PatO's Avatar
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    Post

    And to think we just spent weeks trying to get a group buy together for these things at $165!
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