An elementary manual of radiotelegraphy and radiotelephony for students and operators (1916)
Fleming, J. A. (John Ambrose), Sir, 1849-1945 · London, Longmans, Green & co. · leaf 91
say, of 50 ata pressure of 2000 volts. This current passes through the thickwire of an ordinary high-tension transformer, T^, and is transformed DAMPED ELECTRIC OSCILLATIONS 73 up to 20,000 or 30,000 volts. Across the secomlary terminals ofthis transformer are connected a pair of spark balls, S, a… … Fig. 21. of a second oscillation transformer, T^. The secondary circuitof this last transformer then provides oscillatory discharges ofextra high tension and high frequency, and a large number oftrains of oscillations per second. The operation of the apparatus is as follows: At each alterna-tion of…
Radio · Telegraph, Wireless · Telephone, Wireless
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