Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 401
m, figure 227, shows the connections for workingthe lamp. A wire from the machine goes to the smgle block 380 THE ELECTRIC LIGHT. of the switch, and above this two wires are led to the globe,one for each lamp, L, L, a common return being used througha hollow coil, s. By plugging up either the right… … Firj. 227. A core in the hollow coil moves an index arm over a scalegraduated in amperes arrived at by comparison with a Siemenselectro-dynamometer. Should any accident happen to the cir-cuit, this core would drop upon and short circuit the two springsunderneath, which are attached to the two small…
Electrical engineering
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