Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 76
Fig. 62. Simple Electric Bell, and Connections. 61 52 ELECTRICITY AND MAGNETISM The strength of an electromagnet can be very greatly increasedby giving it such form that the magnetic lines can remain in ironthroughout their entire length instead of emerging into air, as theydo in Fig. 59. For this… … E-lectroMagnet Armature ^ContactPoints irtVi Fig. 63. Illustrating the Principle of the Electric Telegraph. through which a complete iron path for the lines of force is estab-lished, as shown in Fig. 61. The strength of such a magnet dependschiefly upon the number of ampere-turns which encircle it,…
Electrical engineering
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
