Discussion in 'The Projects Forum' started by William Baker, May 31, 2008.

  1. William Baker

    Thread Starter New Member

    May 30, 2008
    I want to take apart an alternator feed it a PWM pulse to get a square wave ,or am i all washed up how someone please help! I have been working on other things on hydrogen but ,I think it would be interesting to see if there a possibly for this to work! Anyone with a full print of this !
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    Why would disassembling an alternator and "feeding" it a PWM pulse accomplish anything? Alternators produce electricity. You may chop the output (no disassembly required) to make a square wave.

    This must be involved with one of those internet scams that has you producing hydrogen gas to improve gas mileage. Is this the "pure" PWM one, or the one that says there is a magic frequency (varies with each source of water) that produces enormous volumes of hydrogen?

    Are you aware that the laws of thermodynamics tell you that you can't get more energy out of a process than you put into it? If hydrolyzing water at a significant rate does take place, the oxygen produced would constitute an explosion hazard.
  3. SgtWookie


    Jul 17, 2007
    Hydrogen by electrolysis seems to be the "snake oil" of 2008. :rolleyes:

    If you'd like to read some REAL information on hydrogen research from a reputable source, here you go:

    Hydrogen Production Basics:

    If you scan through the various production methods, you'll note that production of hydrogen by grid electrolysis is roughly 27% efficient; basically for every 4 units of energy you put in, you get 1 unit of energy back. If it's done under high temperatures, for (roughly) every 2 units of energy you put in, you get 1 unit of energy back.

    So with the current state of technology, it's still a losing proposition.

    The most efficient method currently is steam methane reforming, at between 70%-80%.