1939 copy of Essentials of Alternating Currents by William H. Timbie and Henry H. Higbie. This is the second edition, completely rewritten, and one of 35,000 copies printed. It was designed for home study for anyone looking to learn how to repair alternating-current appliances.
It covers subjects like power transmission, transformers, impedance, current and voltage, polyphase circuits, calculation of wire size, motors and starters, converters, rectifiers and more. 377 pages including index.
Vintage estate find, please see photos. Only minor wear to the cover, minor discoloration. Pages are intact and not brittle, binding is tight. It is signed by the original owner inside the front cover, and you may find small pencil notations in the text.
