Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 238
ator method, shown in Figs. 6, 7, and 12,used in connection with the heterodyne receiver illustrated in Fig. 13. The Fessenden system has transmitted speech from BrantRock to New York City with an expenditure of about 200 watts.Longer distances have also been covered with higher power… … Fig. 19. Operating Circuits of the DeForest System iating arc system presenting nothing of special novelty. Fig. 19shows the essential features of the operating circuits, though in prac-tice a more convenient means is provided for facilitating the changefrom the transmitter to receiver. The arc is…
Electrical engineering
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