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Thread: Mistel Vision fanless PSUs introduced

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    Default Mistel Vision fanless PSUs introduced


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    That aluminum painted orange... man it's been awhile since we've seen that in a PSU.



    Also not a proper fanless design, just under rated units with stricter OPP and OCP most likely.

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    Quote Originally Posted by Tator Tot View Post
    That aluminum painted orange... man it's been awhile since we've seen that in a PSU.



    Also not a proper fanless design, just under rated units with stricter OPP and OCP most likely.
    Given that AFAIK only Enhance has a "true" fanless design and it's SFX-L (Though I wonder how difficult it would be to shove it into an ATX chassis...) that's not a surprise...
    Just some nerd from 'Straya

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    Quote Originally Posted by Tator Tot View Post
    That aluminum painted orange...
    I think it is anodizing, not paint (just a comment, not a criticism)

    I actually put the disassembled parts of a black Maglite flashlight in the oven as the black dye cooks to a bronze color. I attach an example from the Web; in my case the different parts turned different shades of bronze, but I was still happy with the outcome. Be sure to remove all the parts that can't take the heat first.
    Attached Images Attached Images
    Last edited by ashiekh; 08-15-2018 at 01:16 PM.

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    Not convinced this is anything special.

    Unfortunate, really.

    It's so hard to convince engineers to layout a PCB to optimize fanless operation. But there's also the consideration of isolating the primary from the secondary and keeping potential high voltages from energizing the housing if there's a failure.

    A true fanless PSU is possible... but not easy.

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    Quote Originally Posted by jonnyGURU View Post
    A true fanless PSU is possible... but not easy.
    I'd say near impossible... bear with me before you shoot.

    A fan-less power supply is not really fan-less (bear with me...) as it relies upon the air flow generated by the case extraction fans; as such it has little control over the air flow. Further, the flow direction has reversed, so component placement really needs to be re-arranged (as pointed out by Guru)

    NOW you can shoot!


    Quote Originally Posted by jonnyGURU View Post
    It's so hard to convince engineers to layout a PCB to optimize fanless operation.
    Shoot the Engineer

    Then again, as I said above, a fan-less power supply is not really fan-less
    Last edited by ashiekh; 08-15-2018 at 01:20 PM.

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    You're thinking about a "perforated" design like the one in OP. I'm thinking along the lines of a unit that's fully enclosed in a giant aluminum heatsink. Like the Enhance built Silverstone fanless.

    Of course, you still have heat to deal with. As you said, the airflow in the chassis would still have to cool the housing of the PSU.

    Ultimately, the PSU would have to be as efficient as possible so it generates LESS heat. All GaN PSU anyone?

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    Ah, yes you are right; I very much like the enclosed approach as everything stays clean inside.

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    Quote Originally Posted by ashiekh View Post
    I think it is anodizing, not paint (just a comment, not a criticism)

    You are correct, it's technically anodized. Point still stands, we used to see this a lot in the early days of 80+ Standard becoming a thing. Many companies were doing this to make their products seem more premium, along with other goofy cooling "solutions" like having heatpipes connected to the secondary side and go to a fin stack at the rear of the casing.

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    The heatsink is in the shape of an M! :D

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