Robison's Manual of radio telegraphy and telephony for the use of naval electricians (1918)
Robison, S. S. (Samuel Shelburne), b. 1867, United States Naval Institute, Todd, David Wooster, Hooper, Stanford Caldwell · Annapolis, Md. : The United States Naval Institute · leaf 129
ly to the arc,usually 500 volts direct current. Choke coils are inserted in the power leads to protect the latter from highfrequency current. A starting resistance is provided to take care of the momentary shortcircuiting of the power line caused by striking the arc. This resistance israpidly cut… … Fig. 62b.—30 K. W. Arc Set. MANUAL OF RADIO TELEGRAPHY AND TELEPHONY. 125 In practice, in the case of the lOO-kilowatt arc, the operations of turn-ing on or off of cooling water, gas or alcohol; of starting and stopping thecarbon drive, blower, tikker motors, etc., are all done automatically…
