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 271
2,362 HAWKINS ELECTRICITY 2. Magnet F attracts end A of the armature; 3. Contact maker closes circuit through demagnetizing coil D, and sin-gle coil S (of magnet G); 4. Demagnetizing coil demagnetizes F, and 5. Magnet G attracts end C of the armature; 6. Contact maker breaks the circuit through… … COM DENSER CONTACT BREAKER Fig. 3.230.—Elementary heavy duty high voltage bell. The figure shows a winding of finerwire and more turns than that of the low voltage bell illustrated in fig. 3,201. Thisindicates higher resistance to keep down the current to proper value, and an increasednumber of…
Electrical engineering
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