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Thread: PSU Wizzards: Adapting a New Fanless ATX PSU to an Old AT Environment - AC Power Switch




  1. #21
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    Default Re: PSU Wizzards: Adapting a New Fanless ATX PSU to an Old AT Environment - AC Power Switch

    Forgot all about replying to this when typing originally.

    Quote Originally Posted by bitSync View Post
    I like being alive.
    You and me both Yea, was referring to your proposed dissection of that PSU. Thanks for understanding.

  2. #22
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    Default Re: PSU Wizzards: Adapting a New Fanless ATX PSU to an Old AT Environment - AC Power Switch

    Check out Power Switches - Power Supply 101: A Reference Of Specifications, page 6
    for AT power switch information near the end of the web page in the PC/XT/AT and LPX Power Switches section.

    From the Tom's Hardware Power Supply 101 tutorial:


    A web search using: at power switch will provide additional information.

    FYI the attached diagrams are from Power Supply Pinouts- ATX and Non-Standard










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    Asus VH242H 24" monitor [1920x1080]
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    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
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  3. #23
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    Default Re: PSU Wizzards: Adapting a New Fanless ATX PSU to an Old AT Environment - AC Power Switch

    The are many different styles of power strips that you can buy at many stores, some for as little as ~ $5 each, with or without minimal surge protection.





    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  4. #24
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    Default Re: PSU Wizzards: Adapting a New Fanless ATX PSU to an Old AT Environment - AC Power Switch

    Here's a tutorial that might be helpful: Convert ATX PSU to Bench Supply to Power Circuits
    With your knowledge and some minor modifications, this should help you power up both power supplies and your motherboard with a single, multi-pole switch.

    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  5. #25
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    Default Re: PSU Wizzards: Adapting a New Fanless ATX PSU to an Old AT Environment - AC Power Switch

    Another "setup' you might want to explore is just how the computer enthusiasts manage to wire two PSU's in one case. One powering the motherboard and the other powering peripherals. Both need turned on, and I believe they do it by the sense wire too.

    That's loosely akin to what you have there with this box on your desk. or at least from this distance where I sit it (w)(c)ould appear as. It's hard to picture, but throw in electricity, and you'll have to pardon my generalities when I'm replying

  6. #26
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    Default Re: PSU Wizzards: Adapting a New Fanless ATX PSU to an Old AT Environment - AC Power Switch

    Quote Originally Posted by - wardog - View Post
    Another "setup' you might want to explore is just how the computer enthusiasts manage to wire two PSU's in one case. One powering the motherboard and the other powering peripherals. Both need turned on, and I believe they do it by the sense wire too.

    That's loosely akin to what you have there with this box on your desk. or at least from this distance where I sit it (w)(c)ould appear as. It's hard to picture, but throw in electricity, and you'll have to pardon my generalities when I'm replying
    Ignore wardog's suggestion, it sounds too easy.

    A web search using: dual power supply adapter will provide useful links.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  7. #27
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    Default Re: PSU Wizzards: Adapting a New Fanless ATX PSU to an Old AT Environment - AC Power Switch

    Thanks guys.

    The chassis won't accommodate more than 1 PSU, there's just not enough room; if you visit the photos link in the d8b database you'll see the chassis is divided into two parts, the CPU side (left) and the PSU side (right), the PSU side is densely populated. The chassis is a 19" rackmount affair so maintenance implies unracking the unit each time I want to pop the top off. The chassis gets its power from a rackmount Furman power conditioner (actually a series of them), which I believe is equivalent to your proposed 'strips power', so I could manage power to the CPU PSU from a switch external to the chassis (from the Furman power switch). Could it be that simple? Could I set the BIOS power options to boot the machine having sensed loss and restoration of power? Just leave the chassis power on and interrupt the AC power to the chassis using the Furman power conditioner? Would there ever be a scenario with the BIOS power setting set that way where I couldn't boot the machine upon supplying power? That is, would I ever need the ability to signal PS_ON (drop in vdc at the PS_ON pins of the 20-pin connector) with a momentary switch?

    It can't be that easy, right? Just swap in the new ATX PSU and set the BIOS to always power up the PSU on restoration of power? I guess you know what my next test will be...

    I still need to be able to get 115vac to the other non-CPU power supply componenents...
    Subject System d8b: A circa 1999 purpose-built CPU/PSU controller for the Mackie Digital 8 Bus (d8b) digital audio mixer (d8b Database). The CPU/PSU chassis houses both a microprocessor-based contoller system and a number of power supply components that supply various DC voltages to a remotely located audio mixer control surface. Comms between the control surface and the CPU/PSU are by way of a parallel data cable. DC is supplied to the mixer control surface from the CPU/PSU chassis by way of a separate multiconductor cable. CPU/PSU features -

    • Itox CB50-BX motherboard 100 MHz FSB (link)
    • Intel 440BX AGPset chipset
    • Award BIOS v4.51PC - Windows (R) 95/98 Plug and Play Compatible
    • Celeron CPU Socket 370 at 300A MHz
    • 256 MB PC-100 SDRAM (upgraded from as-built 32 MB PC-100 SDRAM)
    • ATI Rage 128 MB AGP video adapter
    • Ethernet card - generic
    • MIDI card - Winman Midiman 1x1 ISA
    • 4 GB Compact Flash in IDE-to-Compact Flash adapter boot drive (upgraded from as-built IDE Maxtor 20 GB HDD)
    • 1.44 MB Floppy Drive
    • 1 AGP slot, 3 PCI slots, 1 16-bit ISA slot, 1 shared ISA/PCI slot
    • PSU - Sparkle SPI-250G 250 watt AT with front panel AC switching (link)
    • OS - custom realtime OS wrapped around a Win98 kernel (i.e., Windows is not accessible)

  8. #28
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    Default Re: PSU Wizzards: Adapting a New Fanless ATX PSU to an Old AT Environment - AC Power Switch

    To save yourself some possible grief, I suggest connecting a momentary ON switch to the appropriate motherboard pins (if available) or using the 20-pin connector's Power_On# and ground connectors.

    In your motherboard user manual:
    page 42, section 3.1.4
    Power Management Setup

    The Power Management Setup allows you to configure your system to
    most effectively save energy. If you like to use the soft power down
    feature of Windows‚ 95/98, you must enable the Power Management
    below. Select Min. Power, Max. Power or User Defined. Either one can
    be used as long as it is NOT disabled.

    page 45
    PWR Lost Resume State

    Keep Off
    When power returns after an AC power failure, the
    systemís power is off. You must press the Power
    button to power-on the system.
    Turn On
    When power returns after an AC power failure, the
    system will automatically power-on.
    Last State
    When power returns after an AC power failure, the
    system will return to the state where you left off
    before power failure occurs. If the systemís power is
    off when AC power failure occurs, it will remain off
    when power returns. If the systemís power is on
    when AC power failure occurs, the system will power on
    when power returns.

    Try it, you might like it!

    I suggest that you search the pdf user manual using: power on
    where you might find some other options, such as section 2.6 Jumper Settings for Wake-On-Keyboard/Wake-On-Mouse (ATX power supply only)
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  9. #29
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    Default Re: PSU Wizzards: Adapting a New Fanless ATX PSU to an Old AT Environment - AC Power Switch

    Quote Originally Posted by bitSync View Post
    Would there ever be a scenario with the BIOS power setting set that way where I couldn't boot the machine upon supplying power? That is, would I ever need the ability to signal PS_ON (drop in vdc at the PS_ON pins of the 20-pin connector) with a momentary switch?
    Splitting those two up.
    1.
    Quote Originally Posted by bitSync View Post
    Would there ever be a scenario with the BIOS power setting set that way where I couldn't boot the machine upon supplying power?
    If there was, clearing/resetting the BIOS would cure it by reverting this change back to default. PITA though in a rack.

    2.
    Quote Originally Posted by bitSync View Post
    That is, would I ever need the ability to signal PS_ON (drop in vdc at the PS_ON pins of the 20-pin connector) with a momentary switch?
    If I read this one right, no, as the switch will now be the Furman PDU itself. .... Did I read that q right in my answer there?? I think that's where you were going.

    Quote Originally Posted by bitSync View Post
    It can't be that easy, right? Just swap in the new ATX PSU and set the BIOS to always power up the PSU on restoration of power? I guess you know what my next test will be...
    Ahh, they or something akin is in that BIOS section then?

    Quote Originally Posted by bitSync View Post
    I still need to be able to get 115vac to the other non-CPU power supply componenents...
    That's where I was going in touching upon how the 'hard core' do it with two psu's. But if the PSU side has a separate externally mounted power plugging into the back(looks as it does, pics aren't that obvious) this too could and probably already is connected to the Furman PDU too.

    Having spent some time perusing the sonido-7 site, your original idea, what I read detailed with "1. Silent Power Supply (By Steve Hammond) is interesting. Nothing like having one of 'em before ones own eyes to visualize it instead of via forum talk. Did you ever PM him for a better understanding/walk through of his "madness' with the Sparkle? It doesn't appear(ha!) too awfully hard, only express caution near electricity.

  10. #30
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    Default Re: PSU Wizzards: Adapting a New Fanless ATX PSU to an Old AT Environment - AC Power Switch

    How is the PSU side "triggered'? That's a q from me.

    And the more I read there at sonido seemingly the more confused and bewildered I become. Steve Hammond in his piece there mentions "the 5V sparkle ps". Why this 5V specific wording? Is that all the computer psu supplies is 5v? I'm guessing it, this 5V psu, also supplies the MB with it's other voltages, right? Meaning the isolated PSU(not CPU, yes, I now recognized the diff) side doesn't supply the MB its req voltages?

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