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Published on Jan 11, 2010
Sunburst test video starts 4:11 in. This machine has an electromagnet in the rotor rather than permanent. This would be around 1980. There was jubilation at the time as the 3-phase drive motor shows virtually no increased load when power is extracted from the machine. At this point they believed the machine could be 20 to 50 times over-unity. However later test by Stanford professor emeritus Robert Kincheloe using a DC drive motor showed only a 5 to 1 efficiency - 500% over-unity. This is still the record for a publically tested N-machine. Most other N-machines including DePalma's subsequent models, Tewari and Trombly machines were 145% - 300%.
On 18/5/2013 I took down episodes 7 - 9 (half of the DePalma Tesla Symposium lecture) due to a copyright claim. If you want the whole video of that particular lecture (originally episodes 4 - 10) plus much more on a 2 hr DVD go to: