Telegraph engineering : a manual for practicing telegraph engineers and engineering students (1922)
Hausmann, Erich, 1886- · New York : D. Van Nostrand Company · leaf 38
Fig. 13. SIMPLEX TELEGRAPHY 23 a 5-hour discharge rate. The voltage of a cell is 1.2 atnormal discharge; for charging 1.85 volts are required percell. Fig. 14 shows the appearance of an 80-ampere-hour
Telegraph
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
