[Bubier], Edward Trevert, 1858- [from old catalog] · Lynn, Mass., Bubier pub. co. · leaf 52
hese are either made of coppeiwires bundled together, copper plates, or carbonplates, which are in contact against the com-mutator. There are two types of dynamos—the continuouscurrent and the alternating current. 50 ELECTKICITY AND ITS In the continuous current dvnamo the currentgenerated always… … Figure i. then in the opposite direction. This dynamohaving no commutator, a collector of two metalrings is necessary, on which the brushes rest.The magnets of this machine must have a con- EECENT APPLICATIONS. 51 tinuous current to excite them, and this current isgenerated by another small,…
Electricity
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