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 254
starts to revolve, thestrength of the current flowing through it may be slightly increasedwithout danger. As the strength of the current increases so does thespeed of the armature, and w^th each increase of speed other sectionsof resistance are successively cut out of the circuit until the… … rig. 125. Back View of Control BoardCourtesy of Otis Elevator Company 221 17:2 ELEVATORS TYPES OF CONTROLLERS Functions. A controller differs from the ordinary motorstarter in that it performs several other functions besides that ofsimply starting the motor. It controls the energizing or cutting…
Electrical engineering
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