Tunzelmann, George William von, 1856- · New York, Scribner & Welford · leaf 88
There arefive simple ways of producing the Magnetic Fieldin which the armature ofthe dynamo rotates. Ofthese methods the onefirst employed consists, ashas already been pointedout, in the use of a perma-nent steel magnet. Fig. 13shows, in a diagrammaticform, a machine of thiskind with its circuit.… … 76 ELECTRICITY IN MODERN LIFE. revolves as indicated by the position of the brushes—viz.,in the direction of the hands of a watch. It will be seenthat this is simply the old magneto-electric machine whichformed the original of the modern dynamo; but as thelatter is now adopted as a generic term for…
Electric industries · Electricity
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