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 311
ults is shown in Fig. 12 whith represents anarrangement of circuits in which one sounder can, by means of aswitch, be worked in connection with three relays. The diagramneeds no description, but the connections should be traced in eachcase; the lever resting on the right, middle, or left points… … Ficr. 1.3. case an extra one with a local circuit of its own is sometimes pro-vided. In Fig. 13 is shown how sucli an additional commonsounder may be used in connection with three different circuits,each sounder having a Ijattery of its own. For local systems of this kind the form of battery most…
Electrical engineering
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