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 118
secondary current is sufficient to overcome this resistance, itflows or jumps across the gap and in so doing, intense heat is pro-duced resulting in a spark. Sometimes the spark is obtained by keeping the primary circuitclosed except during the brief interval necessary for the passage of thespark… … Fig. 3,984.—Diagram of a secondary, vibrator type induction coil. The parts are as follows:A, contact screw; B, battery; C, core; D, vibrator terminal; G, condenser; P, primarywinding; S, secondary winding; W, switch; Y, vibrator. In operation, when theswitch is closed, the following cycle of…
Electrical engineering
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