A dictionary of electrical words, terms and phrases (1898)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W. J. Johnston company · leaf 69
Resistance Coils. thick pieces of brass, E, E, E, Fig. 76. On the in-sertion of the plug-keys, at S, S, the coils are cut-out by short-circuiting. Care should be taken tosee that the plug-keys are firmly inserted and freefrom grease or dirt, as otherwise the coil will not becompletely cut out. As… … Fig- 77- Zn eElectric Balance. the unknown resistance between z and r; the bat-tery is connected tox and z. A convenient pro-portion being taken for the value of the propor-tional coils, resistances are inserted in the arm C,until no deflection is shown by the galvanometerG. The similarity between…
Electricity · Electrical engineering
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