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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 27

An illustration from Robison's Manual of radio telegraphy and telephony for the use of naval electricians, 1918, leaf 27
1 Fig. 14b.—Open-Core, Step-Down Transformer or Induction Coil(current in A B rising). C … Fig. 14c.—Air-Core, Step-Up Transformer (current in A B rising).-< A C

Telegraph, Wireless -- Handbooks, manuals, etc · Telephone, Wireless -- Handbooks, manuals, etc · Radio -- Handbooks, manuals, etc

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