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 360
rotected from the con-denser discharge by inserting choke coils (not shown in Fig.180) in the leads between the transformer and condenser. Theseobstruct the high-frequency current, but do not hinder the pas-sage of the low-frequency charging current into the condenser.Fig. 181 shows a transformer… … Pig. 181.—Step-up transformer for charging condenser. is of such length as to break down at the maximum voltage givenby the transformer. The number of sparks per second is calledthe spark frequency. With the standard spark frequency of1000 per second the amount of power the set sends out is…
Telegraph, Wireless · Radio
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