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The DC Generator<br />

The simple ac generator<br />

can be converted to a dc<br />

generator by using a single<br />

split-ring commutator to<br />

reverse connections twice<br />

per revolution.<br />

Commutator<br />

E<br />

t<br />

DC Generator<br />

For the dc generator: The emf fluctuates in magnitude,<br />

but always has the same direction (polarity).

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