The practical telephone handbook and guide to the telephonic exchange (1906) (14569753877)

Identifier: practicaltelepho00pool (find matches)

Title: The practical telephone handbook and guide to the telephonic exchange

Year: 1906 (1900s)

Authors: Poole, Joseph

Subjects: Telephone

Publisher: New York, Macmillan Co.

Contributing Library: Northeastern University, Snell Library

Digitizing Sponsor: Boston Library Consortium Member Libraries

Text Appearing Before Image:

Fig. 311working currents and currents which circulate in the armature 3o8 PRACTICAL TELEPHONE HANDBOOK or rotor coils, wliich latter currents are wholly due to the inductive action of the magnetic field of the field magnets,or stator. The rotor coils are complete in themselves,

Text Appearing After Image:

Fig. 312 and except for starting purposes would not need to beextended from the rotor itself. By a special startingwinding of the field magnets, and a special connection ofthe armature coils, these machines are made self-starting,even when a load is left on the machine. The Heyland Motor.—This is the form of induction motor STATOR

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1906

Northeastern University, Snell Library

http://commons.wikimedia.org/

public domain