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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 101
ransmitting battery;28, operators set or apparatus connected in the cord circuits; 29, cable to operators set;30, operators transmitter; 31, conductors to operators transmitter; 32 and 33, kzysfor ringing and listening by the operator; 34, breast transmitter; 35, signal conne-t ons to the night… … £ TC| ^ co ct3 -M ct3d S MS- bt>^- o ^ <d o a) co w d -M ^ ?a d,d Q< .* *-> d P. *^o .2 ^S-tf.Si d m£.w a> J3*d • d .. <0 !fl [fl a) to CO-H CD ,,,-H ,VH Cflrrj ^d^ .d. -£ bo^^i:^ .got*H ©i? g o g „£ s-gg CM .3r-T.S Vh O w O do ft ^ g w o «-£_, cu+> d o£ CO CO oj.—… Electrical engineering
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