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High-voltage low-wattage computer -- any advantages?

Discussion in 'Electronic Basics' started by Radium, Jul 20, 2006.

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  1. Radium

    Radium Guest


    Would a computer designed to use high-voltage [around 10,000 volts],
    low-wattage [around 0.000001 watt] have any advantage over conventional
    computers? In this high-volt, low-watt PC, all of the components
    [motherboard, cpu, memory, video system (including the monitor), sound
    system (including the speakers)] rely on the high-voltage, low-power
    electricity. Speakers and monitor are purely digital and also use the
    high-voltage, low-power digital electricity. Speakers do not contain
    any diaphragm, instead they rely on "electrifying" the air to produce
    sound. The electric current directly causes the air molecules to
    vibrate and produce sound -- this makes it easy to reproduce
    high-frequency sounds than using a conventional speaker.

    In this system, the voltage is high but the amperage is *extremely*


  2. No.
  3. Mark Fortune

    Mark Fortune Guest

    Quite the opposite in fact, given that most, if not all insulators have
    a breakdown voltage - IE electricity will start to flow across them once
    the voltage reaches a certain level, sometimes over quite large
    distances, coupled with the fact that the distance between conductors on
    motherboards alone is often quite small. couple that with the fact that
    the distance between conductors on high density IC's such as processors
    is uncreadibly small... you will see problems.

    CPU's typically run at low voltages (say 1.5v - 3v) for this reason - to
    avoid electrical leakage between components on the chip.

    I'm not saying it's not possible to build a computer that uses high
    voltages, but it would have to be huge. The higher the voltage, the
    larger the distance you need between individual components (specifically
    thinking of IC's here). In a world where manufacturers are trying to
    sqeeze as much into a small a space as possible...

    There is also the safety issue to think of. Being a technican, I like to
    work inside computers, sometimes changing floppy drives whilst the
    computers still running, and fans etc. I would not be happy with working
    on a computer that ran at 10,000 volts, even if it was switched off (oh
    btw the capacitors would have to be huge too)

    I like this idea of 'electrifying the air' to produce sound... is this a
    thought process ofshot or is it something you know exists? I would be
    interested to hear any theories/products that do this.

  4. Bob Myers

    Bob Myers Guest

    Please don't feed the trolls. Move along, now,
    everyone, there's nothing to see here....

    Bob M.
  5. Lets reduce the complexity of that computer to a single gate, and see
    how fast it could switch at that power level and voltage swing.

    ..000001 watt from 10,000 volts implies a supply current of no more
    than 10^-10 amperes. extremely low, as you say.

    Charging a 10 pF node through 10,000 volts (one logic signal
    transition) with that current (from I = C*(dv/dt)) would take about
    1000 seconds. Reduce that total current so that a million or so gates
    could be involved in the computer, and that time per transition goes
    up by a factor of a million (if they all must share the same uA). In
    other words, all 1 million gates could change state once every 32 years.

    And people think it takes a long time for Windows to boot up now!
  6. Eeyore

    Eeyore Guest

    Christ, you're clueless.

  7. That's the perfect computer for this troll. It would take a few
    millennium for it to boot.

    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida

  8. Yes, I think we should nominate him for the "Sloman Award" with the
    "Allison Endorsement".

    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
  9. Bob Myers

    Bob Myers Guest

    Well, at least he IS consistent in that...

    Bob M.
  10. Steve

    Steve Guest

    I think you have have amperage and wattage confussed. probably from
    confusing ohm's law.

    let's say we have a cuircut that uses 10 watts, we could use a power
    supply that outputs 10 volts at 1 amp (10 x 1 = 10); or 100 volts at .1
    amp (100 x .1 = 10 watts); but, a power supply that output only .000001
    watt wouldn't have enough power to drive one LED, let olone a computer.
  11. Mark Fortune

    Mark Fortune Guest

    Windows millenium?
  12. Puckdropper

    Puckdropper Guest

    He is at least posting in the correct group. It is
    sci.electronics.basics, not sci.electronics.advanced.headspinning

  13. Radium

    Radium Guest

    Thanks for the info. I know realize how disadvantageous this
    nearly-wattless design of a PC is.

  14. No, his messages belong in

    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
  15. redbelly

    redbelly Guest

    Who knows, maybe that Skybuck guy could keep busy trying to invent such
    a machine ...

  16. jasen

    jasen Guest

    It'd be much more resistant to electrostatic damage, but at one microwatt
    probably not very fast.
    so low that thermal expansion changing its capacitance would cause problems.

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