Cyclopedia of applied electricity : a practical guide for electricians, mechanics, engineers, students, telegraph and telephone operators, and all others interested in electricity (1905)
American School (Chicago, Ill.) · Chicago : American School of Correspondence · leaf 345
lso opening it. The Fort Wayne relay might have an N *armature the same as Pittsbui-g, but it was purposely made differ-ent to afford exercise in tracing out the effect of the current. The student should now be master of at least the theory ofthe two forms of the duplex—the original Stearns and the… … >i ; tt 11 • o H < OS M Z u o ^ -^- . ^ 1 >. >;-.- o ■^ o - lO 0 - ^ » n :i z = < o W^k- Jv S Htt^yj ^ Si ^^■KviH r s ^ ^ ! L ^ - P = THE ELECTRIC TELEGRAPH 85 nhi/ wliose action is detenuiiR-tl, not, as in the Stearns, hy Ji tlir-rent attracting the armature in one direction and a…
Electrical engineering
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