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 151
home polar relay areeliminated. This condition is termed the electrostatic balance. 6. Instruct distant station to send dots with polar key and wordswith neutral key. While this is being done, alternately open and closeboth keys at the home station. If both sets of signal from distantstation come… … Ml IVDUIlilV —|o ooooooj-^ «o <*« ,, <y ^ <S 2 S <D V u rt C •> ** 5 *> « o°-Ss^2t:^-Q 9-CJ3 ssff fulfill & 09 *» O « 5i mt3 C > c „ fli in S £ c O • n3 * o ,a****S*
Electrical engineering
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