Abstract: A section of the rotor of an electric motor includes a Neodymium plastic bonded magnetic material annulus having a plurality of permanent magnets having magnetic poles alternately disposed thereon and pressed onto the periphery of a plastic disc. The annulus is magnetized to provide thirty six evenly spaced similar permanent magnets with their north and south poles alternately disposed along the periphery of the rotor section. Five rotor sections are provided to provide the rotor. Each rotor section is coaxially connected to the shaft of the electric motor. A stator of the electric motor preferably has five stator sections with each having thirty two stator coils that each have one end proximal to the periphery of the annulus. Each stator of the electric motor is disposed about a corresponding rotor section and separated therefrom by an air gap.

Abstract: A sound card of a personal computer provides an audio signal that modulates a carrier of an FM transmitter. Radiation from the transmitter is received by an FM receiver.