Dynamo Electric Machine, 19th Century
Dynamo Electric Machine. A dynamo is an electrical generator that produces direct current with the use of a commutator. Dynamos were the first electrical generators capable of delivering power for industry, and the foundation upon which many other later electric-power conversion devices were based, including the electric motor, the alternating-current alternator, and the rotary converter. Today, the simpler alternator dominates large scale power generation, for efficiency, reliability and cost reasons. A dynamo has the disadvantages of a mechanical commutator. Also, converting alternating to direct current using power rectification devices (vacuum tube or more recently solid state) is effective and usually economical
Picture No
13346788
Media ID
47790564
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3789px x 2954px
(3.7MB)
Credit
© NYPL / Science Source / Mary Evans Picture Library
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