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 169
C D D/RECTCURRENT REVOLV/NG DISK … EART/i Fig. 33. Disk Discliurger for Use with Direct Current High=Frequency Alternators. Ft was known at an early datein the history of radiotelegraphy that a nuich greater efficiency couldbe achieved if a means were devised for creating a continuous trainof undamped oscillations. The Morse dot,…
Electrical engineering
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