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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 59

An illustration from 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, leaf 59
valve makes and breaks the control circuit.Fig. 28 shows a self-starter operated by a float switch. Thisswitch, when closed, energizes the solenoid of the main switch shownabove the motor in the diagram. Closing the main switch alsoenergizes the solenoid on the rheostat arm, and the arm rises,… … Fig. 28. Self-Starter Used with Motor-Driven Pump. Cutler-Hammer Mfg. Co., Milwaukee, Wis. 46 DIRECT-CURRENT MOTORS 37 to hold the arm in place. The motion of the arm also inserts a lampresistance in the circuit of the main switch solenoid, as a safety device.For if the main switch is opened, and…

Electrical engineering

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