An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 514
o increase theresistance; this would continueuntil the arc went out. On theother hand, if the voltage in-creased slightly, then the current would increase, causing morecarbon vapor and decreasing the resistance of the arc, and so onuntil the arc would be practically short-circuited. This… … Fig. 322.—Arc lamp with diagram ofits regulating coil and ballasting re-sistance. 460 ELECTRICITY AND MAGNETISM When arc lamps are operated in parallel on a constant-voltage line,the regulating device is very simple. The plunger inside the regulat-ing coil is attached to a friction clutch. When…
Electricity · Magnetism
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