A generous friend of mine has gifted me with a number of small, FHP permanent magnet DC motors, unfortunately I have no idea about their ratings. I was wondering if there was any particular relationship between the size of such a motor & its max. rating (voltage rating). Or perhaps I should burn a few of them to rate the others?

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F. S. Ahmed

 

No it bepends on the motors winding.

I have an big mototor that runs at 6 V and an 3 times smaler one that runs up to 20V than i have an liel smaler one that runs on 3 V

So as you see size-voltage have no conection

A lot of motors have a sticker that tels you the part number and the operating voltage.

If you have the part numbers simply serach for an datasheet.

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Il give you shocking experience.

 

Nope, nothing written. Guess I'll have to use them safely or burn a few.

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F. S. Ahmed