Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

E,B,V generator

  1. Aug 28, 2004 #1
    Hi all.

    Imagine one negative charged dielectric rod into a copper solenoid, and rounded coaxially by another positive charged dielectric. Then we have an E field radially directed passing through the coil.

    Now put one magnet on top of the coil and another magnet at the bottom of the coil, so we have a B field axially directed passing through the coil.

    The copper coil has electrons inside, and these electrons are not static ones, they have random movements due to ambient heat.

    Now, by virtue of the crossed B and E fields, these electrons will tend to flow with a preferred direction on the coil.

    The E and B fields doesn't increase nor decrease the kinetic energy of the electrons of the coil, but changes direction in a perpendicular force fashion, so no work is added or needed. The resultant effect is "focusing" the random kinetic energy of the electrons to flow on a preferred direction, so we can add all the randomly directed kinetic energy into one preferred direction, and thus a useful kinetic energy appear from zero kinetic energy net resultant.

    Now, if we put a load on the coil ends, the electrons will flow. The load will convert the ordered flow of electrons into random kinetic movements, so power is dissipated again as heat.

    Then, the heat of the environment will go again into the device, because the ordenation of the electrons by E and B fields convert "heat" random movements of the electrons of the coil into kinetic useful work, so the coil goes cold...

    So there are an electric cycle and a heat cycle.

    The device transforms heat into current, (then the device goes cold), and then the load transforms current into heat, and finally the device takes that ambient heat.

    What's the problem with that?
  2. jcsd
  3. Aug 31, 2004 #2
    The physical principle of the device is well known.
    Take a look to this page:

    (if it doesn't work, type:www3.ltu.edu/~s_schneider/physlets/main/cross_eb.shtml)

    you can play with the values, and realyze that it doesn't matter the initial direction of the charges, they finally follow the same direction (so finally, in a properly designed device, charges could create a current or voltage).

    This page talks about the same. I think i have posted it before, but take a look:

    Last edited: Aug 31, 2004
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: E,B,V generator
  1. (v^2/r) >= V*i (Replies: 0)

  2. E-bike with generator (Replies: 18)