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 255
heirattractive force. The armature is then carried hack to its originalposition liy tin- sjtrinj^ K. inakiiiji; contact at I). and the process isrepeated. The haninier will tlins vibrate and the bell continue torini£ as loun as the circuit is closed. The type of bell described above is the one most…
Electrical engineering
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