Two permanent magnets are being accelerated by coils (more precisely - Brook´s coils ) and cause spining of the crankshaft. I must admit it is not a revolutionary device :) It serves only to test the principal of magnetic accelerator. The inspiration ( for accelerator schematic) came from http://hawelson.blog.cz/0612/elektronicky-rizene-kyvadlo (the second one without the Hall sensor) I only improved it a bit to manage heavier friction. Function explanation As you can see in the schematic diagram, there is a feedback resistor connecting coil and the basis of NPN transistor. If the magnet is steady, there is no induced current flowing through the resistor and the NPN transistor is closed. While the magnet is approaching the coil, the induced current flows through the diode, and nothing happens. When the magnet starts leaving the coil, the induced current flows in oposite direction and causes opening of NPN transistor. The right PNP transistor also opens and the capacitor 2200uF starts discharging through the coil and keeps NPN opened. This causes repulsion of the magnet. The NPN transistor also closes the left side of the circuit so the capacitor can not be charged in that moment. The capacitor is discharged instantly, so the NPN closes itself. The left side of the circuit is now opened and the capacitor is being charged. Now the circuit waits for another magnet swing.

• published: 06 Feb 2014
• views: 11