Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 448
rough the agency of the lever THE WOOD ARC LAMP. 427 y, as shown in fig. 256, will produce a separation of the carbons.The magnets h h, in the shunt circuit around the arc, have avery high resistance, so that when the carbons are together,practically no current flows through hh; but the instant… … Fig. 251, proportion will increase as the carbons are consumed, until thearc becomes of normal length. When this occurs, the attractiveforce of both magnets is balanced. If the arc increases inlength, the attractive force of the magnets h h will preponderate,attracting the armature i in that…
Electrical engineering
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