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How to Build a Joseph Newman Motor

A Joseph Newman motor is constructed of an assembly free of ferromagnetic materials, setting it aside from a regular DC electric motor. The rotation of the system's magnet rather than its coil promotes system efficiency, and those with an interest in electrical power will enjoy examining the functional properties of this construction as they create their own Joseph Newman motor at home or for a school project.

Things You'll Need

Ferrite loudspeaker magnets
Nonmetallic tube
50-lb. spool copper wire, between 8- and 32-gauge
Solenoid coil
Zinc can
Carbon rod
Ammonium chloride
Manganese dioxide
Battery terminals
Lead wires

Instructions

- 1
  Assemble the ferrite loudspeaker magnets inside a nonmetallic tube to construct the magnetic armature. The tube should be approximately 11 inches long.
- 2
  Wrap copper wire onto the entire coil at a rate of 15 turns per inch. Place the magnet inside the wired coil.
- 3
  Build a battery by mixing a paste of even parts ammonium chloride and manganese dioxide. Place the paste inside a zinc can and insert a carbon rod.
- 4
  Attach a positive terminal to the carbon rod and mount the negative terminal on the wall of the zinc can.
- 5
  Connect lead wires to the battery terminals and ends of the coil to power the motor.

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