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 177
gnetism reaches its full strength (which may take several sec-onds) before the armature is connected. In the arrangement shown in Fig. 24, the release magnet hasits coils in series with the field. As long as the motor is in opera-tion, the core is energized and the arm S is held in the… … FIELD
Electrical engineering
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