DC motor as generator

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kchriste said:
You get pulsating DC.
Click to expand...

Yup. THe same split- ring commutators in a DC motor that turn the DC current into AC (so the motor can actually spin and not lock-up) have the reverse effect on the AC generated when you spin the motor to make it behave like a generator.
 
dknguyen said:
Yup. THe same split- ring commutators in a DC motor that turn the DC current into AC (so the motor can actually spin and not lock-up) have the reverse effect on the AC generated when you spin the motor to make it behave like a generator.
Click to expand...

Yes, the commutator and brushes form a mechanical rectifier - for those old enough to remember vibrator power supplys (used to power valve radios in cars), you could buy them with or without extra contacts for mechanical rectification of the HV output.
 
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