Elementary treatise on physics, experimental and applied : for the use of colleges and schools (1906)
Ganot, A. (Adolphe), 1804-1887, Atkinson, Edmund, 1831-1901, Reinold, A. W. (Arnold William), 1843-1921 · New York : Wood · leaf 967
; but when thecircuit consists of many miles of wire, the current may be too weak to actupon the electromagnet with suftkicnt force to print a despatch. Hence itis necessary to have recourse to a relay- x\\i\\. is, to an auxiliary electromagnetwhich is still traversed by the current of the line,… … 942 Dynamical Electricity [914- Fig. 928 shows the relay. The current entering the relay by the bindingscrew, L, passes into an electromagnet, E, whence it passes into the earthby the binding screw T. Now, each time that the current of the linepasses into the relay, the electroinagnet attracts an…
Physics
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