Can a commutator be made to produce dc current turning in both directions?

[James Robieson]

Can a commutator be made to produce dc current turning in both directions?

 

[Minder]

It does, if referring to a DC motor/generator.
If wishing to maintain a certain polarity regardless of direction, then a simple bridge rectifier on the output will do it.
M.

 

[James Robieson]

It does, if referring to a DC motor/generator.
If wishing to maintain a certain polarity regardless of direction, then a simple bridge rectifier on the output will do it.
M.

OK Minder,Thank you

 

[daberbaber]

Minder's comment answers your question and gives a great tip for maintaining polarity of the voltage coming from the commutator. And the field is supplied by a PM permanent magnet. In a car system however and in many other motors, the field is supplied by an outside source and this will complicate any attempts to use a motor for a generator/alternator.

 

[James Robieson]

Minder's comment answers your question and gives a great tip for maintaining polarity of the voltage coming from the commutator. And the field is supplied by a PM permanent magnet. In a car system however and in many other motors, the field is supplied by an outside source and this will complicate any attempts to use a motor for a generator/alternator.

Ok daberbaber
Thank you, that clears up a lot things.