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Tech Musings


Beaty, Bill, Untried Homopolar Generator Experiments Online at http://www.eskimo.com/~billb/freenrg/n-mach.html. Becker, Richard, Electromagnetic Fields and Interactions, Dover 1982. Sections 87 & 88 Cantor, Gooding, & James, Michael Faraday, Humanities Press, NJ 1996. Faraday, Michael, Experimental Reseraches in Electricity, Britannica Great Books, vol 45, 1952. Feynman, Richard, The Feynman Lectures on Physics, Addison Wesley, 1989. Hide, A study of two self-exciting single-disk homopolar dynamos, Proc R soc London A v452 pp1369-95. McAllister, Friction on a rotating disk in a magnetic field Online http://www2.hawaii.edu/suremath/jdisk1.html Miller, Aurthur I., Albert Einstein’s Special Theory of Relativity, Addison Wesley 1981. Moroz, On self-excited coupled double disk homopolar dynamos driving series motors, Psysica D, 1997. Valverde, Principal of relativity as applied to motional electromagnetic induction, Am J Phys, v63 #3, p228. Valone, Thomas, Homopolar Handbook, Integretity Institute Press 1994, Washington DC.

and make closing the flux path a lot harder. While not otherwise changing the outcome in any useful way.

Thus, there is no compelling use for a spinning magnet Faraday disk. At least none that I can think of.

Beyond "gee whiz" demos. No matter whether its mag field rotates or not, all of the homopolar generators and all Faraday disks must obey the same laws of conservation of energy that other generators do.

While counter emfs and counter torque mechanisms are not obvious, they most certainly do exist. More on this in the superb Untried Homopolar Experiments shown in the listing.

There is no magic here. Nor any way I see that any "overunity" or any "free energy" or "zero point" energy device can possibly ever result. All attempts to do otherwise to date have failed. Ludicrously and miserably. The usual problems are the inability to properly measure true ac power, inept failures to comprehend counter emfs or torques, plus outrageously absurd "not even wrong" theories.

After my much closer look, I now sure can understand how any "free energy" enthusiast could get severely mislead with such a counterintuitive and unobvious way of generating a plain old dc current.

Thanks to Bill Beatty, to Clarence Green, and John Vanco for all their considerable input on this topic. Let me know if you have any more "real science" references for me here. An Incredible Secret Money Machine II for your thoughts.

Let’s hear from you.

A Homopolar Motor

A new homopolar motor intended for electric vehicles has newly been announced by the University of Texas Center for Electromechanics. The motor operates at 5000 amps peak from a 48 volt source. The claimed maximum power efficiency is a very surprisingly high 87 percent.

The appeal of a homopolar traction motor lies in its high current and low voltage. Needing fewer series cells in an electric vehicle.

But on the other hand, the higher currents raise the controller costs and increase wiring losses. And ultra high current brushes or slip rings do not sound like all that great a thing to purposely design into a car.

While certainly a real interesting development, I’d bet upon switched reluctance ac as the "best" solution to hybrid electric vehicles. I also do feel that the optimum number of motors per car might end up something like 4000 to 40,000 millimotors instead of just using four humongous ones. The


Phone or write all your US Tech Musings questions to:

Don Lancaster Synergetics Box 809-EN Thatcher, AZ, 85552 (520) 428-4073

US email: don@tinaja.com Web page: www.tinaja.com

same distributed way a dollar power FET is really half a million devices working together in parallel.

Surplus Update

The Feds have recently cleaned up their surplus website. Find this one at www.drms.dla.gov It’s nicer arranged and far easier to use than before.

But military surplus doesn’t seem all that great these days. You’ll find much better bargains at downsizing research labs and commercial firms. And one often overlooked source for incredible test instrument buys are outlying community colleges. Many of whom seem to be sharply cutting back on electronics programs.

Two auction houses I have found interesting are Bentley Auctioneers in Alburquerque (mostly Los Alamos stuff) and B&B Auctions in Phoenix (mostly Intel). One guide to general surplus and distress merchandise is Closeout News. Another trade journal with lots of mechanical and electrical items: Industrial Marketplace.

I’ve got a new surplus and auction story up as RESBN73.PDF For some surplus bargains of my own, check into www.tinaja.com/barg01.html.

New Tech Lit

A new MAX126 chip from Maxim. This ic is a switchable four channel, 14 bit A/D converter that is able to simultaneously sample all its inputs. Which ends up super important for real power measurement. Especially when strange waveforms or nonlinear loads are involved. The device appears able to handle exceptionally


Copyright c 1998 by Don Lancaster and Synergetics (520) 428-4073 www.tinaja.com All commercial rights and all electronic media rights fully reserved. Reposting is expressly forbidden.

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