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 48
tweenlines and relay. Ip to about 1S55, the companies used for thispurpose a manually-operated switch which required the attentionof one operator at every repeating station. Another way of repeating is to equip each section with a key,relay, and sounder, the operator recei\ing and manually… … Fig. 14. Standard Morse Repeater TransmitterCourtesy of Postal Telegraph-Cable Company were introduced, which were the same as the above in principle, beingnothing more than a means of closing the circuit for incoming mes-sages and automatically repeating the signals over the other section-of the…
Electrical engineering
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
