https://www.brucedepalma.com/
The DePalma generator is essentiallya simple magnetized flywheel.His astonishing claim is that the present version of the N machine can generate up to five times more power than it consumes. This, of course, defies the basic law of the conservation of energy, which says that the output of energy cannot be more than the input. Most physicists simply refuse to look at DePalma’s findings and dismiss his theories out of hand.
Yet "proof of principle" for his invention was apparently provided when a large N machine, dubbed the Sunburst, was built in 1978 in Santa Barbara California. The Sunburst machine was independently tested by Dr. Robert Kincheloe, professor emeritus of electrical engineering at Stanford University. In his 1986 report (presented to the Society for Scientific Exploration, San Francisco, 6/21/86), Kincheloe noted that the drag of the rotating magnetized gyroscope is only 13 to 20 percent of a conventional generator operating at an ideal 100 percent efficiency.The DePalma N machine therefore could produce electricity at around 500 percent efficiency.
In Kincheloe’s cautious summary: "DePalma may have been right in that there is indeed a situation here whereby energy is being obtained from a previously unknown and unexplained source. This is a conclusion that most scientists and engineers would reject out of hand as being a violation of accepted laws of physics and if true has incredible implications."