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    Seems these things already exist

    Seems these things already exist
  2. Thread: LLC

    by ashiekh
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    I assume any patents have expired

    I assume any patents have expired
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    Counter rotating fans

    I recall Howard Hughes and some Russian planes use counter rotating props and some planes use single bladed props. I believe both approaches are more efficient and was wondering if there were any...
  4. Thread: LLC

    by ashiekh
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    LLC

    LLC seems somewhat recent; why is that? The idea didn't exist till recently or the necessary technology? Or perhaps there was little motivation till the drive for efficiency.

    This document...
  5. High failure components in power supplies.

    Cascade failure

    https://youtu.be/8gpFMn2G4fE

    "Often times a bad capacitor would cause a diode to fail, and this would often cause your main switching transistor to also fail."
  6. Yes and no, sometimes more than one thing hangs...

    Yes and no, sometimes more than one thing hangs off a single cable.
  7. Would solve the burnt connector issue people are...

    Would solve the burnt connector issue people are seeing.
  8. That's an interesting set of connectors, how much...

    That's an interesting set of connectors, how much current can those carry?
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    OK

    OK
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    How come murder rates dropped when Australia...

    How come murder rates dropped when Australia tightened their gun laws?
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    Now you're talkin`

    Now you're talkin`
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    True, except for the one point of contact, that...

    True, except for the one point of contact, that can be avoided.
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    I wonder if anyone will ever develop...

    I wonder if anyone will ever develop aerodynamical bearings at such a small scale.

    Perhaps the fan itself could be self centering, so negating the need for a bearing...
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    Phew, then I am safe.

    Phew, then I am safe.
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    For me friction is not so much the issue as...

    For me friction is not so much the issue as longevity; I assume maglev bearings have long MTTF?

    Did I just use an acronym? Shame on me.
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    Are you remotely serious?

    Are you remotely serious?
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    Gotta admit I'd be concerned to see 110C, then...

    Gotta admit I'd be concerned to see 110C, then again my car engine probably runs up to 105C without problem.
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    Oops

    Oops
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    I think you are right. I've always wondered if...

    I think you are right.

    I've always wondered if a large wad of porous material might be enough for a long life fan with a lot of oil being held in the wad.
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    My neighbor once argued that one can kill someone...

    My neighbor once argued that one can kill someone with a butter knife to somehow justify owning guns.
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    In order to qualify as a rifle bearing I assume...

    In order to qualify as a rifle bearing I assume the grooves must be helical?
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    What mess; I was born a Londoner so this is sad...

    What mess; I was born a Londoner so this is sad to learn.
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    Oops, I lost the thread; sorry about that.

    Oops, I lost the thread; sorry about that.
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    How about a bad ground, or just simply because...

    How about a bad ground, or just simply because the speaker wires are not twisted and so act like an antenna.
  25. I agree, but it is a little like the story of...

    I agree, but it is a little like the story of losing ones car keys at night... one looks under each street lamp, not because it is most likely to be there but because that is where one could most...
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