Double-T armature

From KYNNpedia

Double-T armature - Shape of armature used in some motors and generators.<ref name=IOEM>The invention of the electric motor 1856-1893</ref> Two 'T' shapes extending from axis.

Its use in early Siemens dynamos caused a pulsing variable DC output which was improved upon by the Gramme dynamo.<ref name=IOEM/>

Another improvement is the three-pole armature ('triple-T' armature) as in this image :

See also

References

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