Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 230
oTSMlf J2 5?3 r- C <P « o z^£ > c 3 rt-gJoo ^.S 2 o t< ™r oah 5jj . WIRELESS TELEGRAPHY 2,321 wing to the ground. Then connect a storage battery and rheo-stat in series with the filament terminals. Thus, the circuitsin which the oscillations are to be detected are joined in serieswith… … Pig. 3,175.—Electro air cooled rheostat. This consists of a wire spring set in a groovein a wood base. One end is connected to a binding post and the other end is free. Alever connected to a second binding post varies the spring wire resistance when moveqover its surface. Ques. Describe the De…
Electrical engineering
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