Charging issue

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This may be a stupid question, but when you don’t know, well I don’t like guessing.

Does anyone recognize this? Is it a voltage regulator?

 

[Treedy]

This may be a stupid question, but when you don’t know, well I don’t like guessing.

Does anyone recognize this? Is it a voltage regulator?

Maybe an “old school” RF filter?

 

[BobTurner]

Maybe an “old school” RF filter?

It looks like a voltage regulator from 1960.(?). Before solid state electronics a rapidly opening/closing relay was used to regulate the average current going to the field coil.

 

[jabarr]

Starting vibrator for retard points in (typically Bendix) mags.
Its missing its cover.

 

[bjdecker]

…Not-sketchy-at-all…