"The electricity is fed into a number of large capacitors, one for each metal sheet. An automatic switch, adjustable in timing by the pilot, closes, and as the electricity jumps across the switch, back and forth, it raises it's own frequency; a switch being used for each capacitor.
The electricity goes into a Tesla transformer; again, one transformer for each capacitor."
https://nexusnewsfeed.com/article/science-futures/nikola-tesla-s-flying-saucer-electromagnetic-field-lift-experiments/
"A mass energy machine is arranged on the cabin body, and comprises a flywheel shaft, a flywheel and air cylinders, wherein the flywheel shaft is connected with the cabin body; the flywheel shaft is provided with the flywheel; a linear particle generating chamber is arranged on the flywheel, and the middle part of the linear particle generating chamber is provided with an air inlet hole; the air cylinders are arranged on the periphery of the flywheel; the end of the air cylinder near the flywheel shaft, is provided with an air inlet of the air cylinder; the air inlet of the air cylinder is communicated with the periphery of the linear particle generating chamber; an igniter is arranged on the air cylinder; the included angle between the air jet direction of the air cylinders and the radius of the flywheel is phi1; and the included angle between the air jet direction of the air cylinders and flywheel plane vertical to the flywheel shaft is phi2."
https://patents.google.com/patent/CN101797980A/en
"An electromagnetic coil is an electrical conductor such as a wire in the shape of a coil (spiral or helix).[1][2] Electromagnetic coils are used in electrical engineering, in applications where electric currents interact with magnetic fields, in devices such as electric motors, generators, inductors, electromagnets, transformers, and sensor coils. Either an electric current is passed through the wire of the coil to generate a magnetic field, or conversely, an external time-varying magnetic field through the interior of the coil generates an EMF (voltage) in the conductor"
https://en.wikipedia.org/wiki/Electromagnetic_coil