The thermionic vacuum tube and its applications (1920)
Van der Bijl, Hendrik Johannes, 1887- · New York McGraw-Hill Book, Co · leaf 271
elix round the anode,and the cathode consists of a number of filaments arranged outsidethe grid to form a cylindrical system concentric with the gridand anode. Tubes of this tjqDe have been made to dissipateseveral kilowatts. 248 rUERMlUNIC VACUUM TUBE Other means have been used for preventing the…
Telegraph, Wireless
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
