National Radio Institute Books: The Design and Development of Power Packs (Radio-Trician Special Text)

1930. 2nd Printing. National Radio Institute, Washington D. C., 29 pages. 5 oz. (9 x 6 x .1 inches Stapled Paperback/Pamphlet) . National Radio Institute Books: The Design and Development of Power Packs (Radio-Trician Special Text). Contents: The Power Pack; Current Distribution; Voltage Distribution; Economizing Load Currents; Grid Bias Voltages; Ripple Voltages and Current Hum; The First Condenser; D. C. Voltage; Choke Coils; Final Design; First Condenser; Second Condenser; Third Condenser; Power Transformer; Phonograph Amplifiers. - Vintage Electronics