Mostly Permanent Magnet Motor with minimal Input Power

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This small PWM can set frequency and pulse width to control the field intensity of the electromagnet and the speed of the oscillation:

My component showed up in my Costa Rica post office, mailed to the wrong address from China, but it arrived anyway. Next I plan to connect it to the PM backed electromagnet and Adam's pulse an axial tube attached to a diametric with a short ferrite rod. This will drive a Kundel rotor.

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Kundel Adams schematic

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The opposition between the permanent backing magnets and the axial piston pushes the connecting rod and diametric tube into the spring pressure switch. This triggers the masking field and an attraction back stroke. The field collapse coupled with the backing magnets punches the Kundel rotor magnets and the switch.

I built a test model and it's performing well.

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Collar bearing cup and magnet sleeve.

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Here's a detail of the two ends. The coil side simply has a sleeve for the axial magnet and the rotor a collar bearing on the switch cap.

Both attach to the frame.

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Sliding rail

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Here we can see the connecting rod attached to the Rail Slider and the magnets, coil and switch cap connected to the frame.

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The SPDT switch can be repositioned behind the axial magnet and a drive shaft run through the switch cap. The switch is easier to reach for adjustment at the end of the shaft. Alternator windings could collect output in this position.