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 136
esvery well the effect of syntony in exalting the secondary current.It can be conducted also with undamped oscillations set up in theprimary circuit by the use of a spark gap, but it is found thatwhen using undamped oscillations the tuning, as it is called, ismuch sharper than with damped… … Fig, 25. current, that is the value which would be indicated by a correcthot-wire ammeter inserted in the secondary circuit. Then J^ iscalled the mean square value of the oscillations, or, by some Germanwriters, the integral effect of the oscillations. Let Ci be thecapacity in the primary circuit…
Radio · Telegraph, Wireless · Telephone, Wireless
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