Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 96
econducting brush falls into theholes it short-circuits the line, thereby causing a sudden drop in potential on the line. The batterycurrent goes to line only when the brush rests on the paper betweenthe holes, therefore the distance between the holes determines thesignals for dots and dashes.… … Fig. 50. Morse Key Tape Puncher for Delany Telegraph the name properly applies to several forms of apparatus, each mark-ing a distinct advance in the art. The inventor has applied his long 79 70 MODERN LAND AND SUBMARINE TELEGRAPHY telegraph experience and exceptional ability not solely to…
Electrical engineering
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