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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 46

An illustration from 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, leaf 46
i-automatic keys sometimesresults in a very jerky style of sending, because the automaticvibrator, which makes the dots, spaces them at certain regular timeintervals, and if the operator does not make the daslies of a corre-sponding length irregular signals will be made. 34 MODERN LAND AND… … Fig. 11. Standard Morse Local SounderCourtesy of Postal Telegraph-Cable Company louder and clearer sound. Fig. 11 illustrates a standard sounder foruse in connection with a relay. Such sounders have a resistance of4 or 5 ohms and are usually operated with a current of about a quar-ter of an ampere.…

Electrical engineering

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