Question

who convert the ac current to dc

Answer 1

Hey friend
here is your answer

Our mobile battery is convert AC to DC
and any batteries convert AC to DC

And
Call is convrt AC to DC

thanks
hope it helps you

Answer 2

Hola Friend ✋✋✋

Split Ring Commutator converts Alternating current to Direct current in the case of electric motor and generator.

With the arrangement of split Ring type commutator, one brush is at all times in contact with a moving up in the field and the other is in the contact with the are moving down.

Hope it helps