The principles underlying radio communication (1922)
United States. National Bureau of Standards, Ould, Richard Sheldon, 1889-, United States. Army. Signal Corps · Washington, Govt. Print. Off. · leaf 367
ch full charge, since the spark willjump to the moving tooth a little before the tooth is opposite thefixed electrode. Synchronous gaps are also constructed withtwice as many teeth as there are generator poles, giving twosparks per half cycle. These sparks are spaced the same dis- 362 TRANSMITTING… … Fig. 186.—Nonsynchronous rotary gap. This is sometimes regarded as desirable on 60-cycle supplyfrequency, and such gaps have been used to a considerableextent. ROTARY GAPS. 363 More than two sparks per half cycle can not be producedwithout having some of them occur at different voltages. If it is…
Telegraph, Wireless · Radio
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