Elementary lessons in electricity and magnetism (1906)
Thompson, Silvanus P. (Silvanus Phillips), 1851-1916, Schwetzky, Otto H. L. [from old catalog] · Chicago, Thompson & Thomas · leaf 432
Tig^ 165. a relay. Whenever a current in the line circuit movesthe tongue of the relay it closes the local circuit, andcauses the Morse to record either a dot or a dash uponthe strip of paper. The key K is shown in an. enlarged K … Fig. 164. view in Fig. 164. The line wire is connected with thecentral pivot A. K spring/keeps the front ,en4 of thekey elevated when not in use, so that the line wire is in CHAP. XII.] ELECTRICITY AND MAGNETISM. 407 communication through the rear end of the key with therelay or receiving…
Electricity · Magnetism
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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