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Permanent Magnet Motors: Build One

Inventor: Paul Monus
Year: 1982
Device: Permanent Magnet Motor (single-sided double-action linear motor)
Folder: monus
Original: Open article
Confidence
0.78
Practicability
0.60
Evidence
0.20
Fringe Score
0.30
Risk
0.10
TRL
5

Goal

To create a motor that transforms stored magnetic energy into mechanical work with high efficiency.

Problem

Need for more efficient mechanical energy conversion devices using permanent magnets.

Concept Summary

The author describes a family of permanent-magnet-based motors (linear, tilted-track, oscillating, circular-track) that use the interaction between permanent magnets and ferromagnetic objects to produce motion. The designs rely on magnetic force curves, symmetry considerations, and electronic impulse timing to drive the motor.

Principles

  • Magnetic force and flux density
  • Energy conservation and magnetic energy storage
  • Magnetic reluctance and circuit analogy
  • Impulse timing and electronic switching

Scientific Domains

Physics Electrical Engineering Magnetics

Materials

  • Permanent magnets (any type, e.g., horseshoe or bar magnets)
  • Non-magnetic structural material (e.g., wood, balsa wood)
  • Ferromagnetic objects (iron pieces, metal sleds)

Mechanisms of Action

  • Interaction of permanent magnets with ferromagnetic moving parts
  • Linear attraction/repulsion forces
  • Electronic impulse circuits for timing and drive

Energy Sources

External electrical impulse (from a driver circuit)

Applications

  • Mechanical drive systems
  • Low-speed rotary generators
  • Educational demonstrations of magnetic principles

Claimed Performance

The author states that the motors have been running in his laboratory for a long time and work "perfectly". No quantitative efficiency or power figures are provided.

Experimental Evidence

The author reports personal testing of several motor configurations (linear, tilted-track, oscillating, circular-track) and claims they operate as described, but no data, measurements, or independent verification are presented.

Replication Status

No external replication or independent testing is mentioned in the text.

Limitations

  • Requires precise construction and timing electronics
  • No quantitative performance data
  • Efficiency limited by magnetic hysteresis and friction

Red Flags

  • Lack of experimental data or independent verification
  • Reliance on anecdotal laboratory runs
  • Potential over-statement of "perfect" operation without measurements

Keywords

permanent magnet motor linear motor oscillating motor magnetic track energy conversion efficiency

Related Technologies

Electric motor Linear motor Magnetic levitation Impulse drive circuits

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