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 183
DYNAMO-ELECTRIC MACHINERY. there will be no emf. Each brush will be just in the act ofpassing from one segment to the other. After a half revolution from the position shown b will haveexchanged places with a. Now the emf, in & will be toward theright, and current will flow out to the external… … ProdycTion of uni-direoTional ennf. by revolvir^ coil with commoMTorNS - M<aXn«1 C-Commute Tor, two Se^menTa ab- Revolving loofj o^ Wife E>f.fi>-, 6pu.5hes X - External circuit
Telegraph, Wireless · Radio
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