> Indeed it does. Hi Terry, for another opinion Stephen could have a look at the controversy you and I had about this some time ago, I had found what looked very much like a large error in input current measurement by analysing the Mosfet's voltage waveform and applying Ohm's low to it knowing it's ON resistance (search for Sprain in the list archive).
Michel ----- Original Message ----- From: "Terry Blanton" <[EMAIL PROTECTED]> To: <vortex-l@eskimo.com> Sent: Tuesday, November 28, 2006 1:21 AM Subject: Re: [Vo]: Re: Interesting News About Steorn > On 11/27/06, Stephen A. Lawrence <[EMAIL PROTECTED]> wrote: > >> An example might be an electric motor which produced more mechanical >> energy than the electrical energy it consumed -- to close the loop you >> need to convert the mechanical energy back into electrical energy, which >> introduces losses which may eat up your OU. The result would be >> something that was in reality an amazing breakthrough, but which still >> wouldn't convince Bob Parks. (Does this describe the Sprain motor? I >> haven't been following that one.) > > Indeed it does. The Sprain Magmo uses a spiral magnetic gradient to > produce torque. An electromagnet is used to kick the rotor past the > sticky spot. The energy consumed by the electromagnet is less than > the mechanical energy produced by the gradient. > > The problem with self running has been the waveform of the energy > produced by the PM generator. The voltage from the permanent mag gen > ramps from 13 V to 28 V. 20 V is required to fire the EM. The min V > is produced after the firing (when the torque is at a minimum). I > have tried trigger circuits which don't draw from the magmo torque > until the V exceeds 20 V; but, we have had no success since this > eliminates a large part of the energy produced. > > The gradient of the field of the present configuration is 0.8 G per > degree. We have a new magnet which will produce a gradient of 20 G > per degree. We lack the enthusiasm to pursue a self-runner when you > know that the new mag will ship soon. > > Now our limiting factor seems to be the inductance of the EM. The new > EM weighs 45 lbs but only doubles the inductance. We will not achieve > the theorized 4500 RPM; but, we will far exceed the current 90 RPM. I > have no doubts this new mag will let us self-run. > > Stay tuned. > > Terry >
