Direct
current (DC) generators
An
AC generator can be modified to produce direct current (DC) electricity also.
This change requires a commutator. A commutator is simply a slip ring that has
been cut in half, with both halves insulated from each other. The brushes
attached to each half of the commutator are arranged so that at the moment the
direction of the current in the coil reverses, they slip from one half of the
commutator to the other. The current that flows into the external circuit,
therefore, is always traveling in the same direction. This results in a
steadier current.
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