Flat dc electric machine

An axial flux flat dc electric machine comprising:

• radial electrical conductors carrying currents flowing in the same directions, (radially inward or outward) on both sides of an annular rotor disc which may be made of ferromagnetic or non-ferromagnetic material and electrically insulated from the radial conductors;
• said radial conductors may be implemented as spokes of electrically conductive ferromagnetic or non-ferromagnetic wheel, which would be especially convenient for a stacked multi-rotor electrical machine;
• a stator, in close proximity to said rotor that would provide axial flux, may be a disc or annular disc permanent magnet or electromagnet which may be on one or both sides of said rotor;
• a relatively low voltage power source connected to the two bared ends of said radial conductors of said rotor by using brushes requiring no commutation;
• said power source may reside on or off said rotor and if it resides on said rotor then said terminals of said power source can make direct electrical connection to the two ends of said radial conductors thereby eliminating the need for a brush;
• a ball bearing, located in the center, facilitating rotation of said rotor about a shaft passing through it.