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 193
disconnects the receiving circuits from the aerialand ground and breaks detector and telephone connections as may benecessary to protect them from induced high potentials. When in the receiving position this switch opens the primary or sec-ondary circuit of the transformer and, if the motor…
