Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 610
GRAPH. in Great Britain came into the hands of the Post-office authorities, here,also, the Morse is the system most approved. The general arrangement of the transmitters, batteries, receiving instru-ments, &c., should be first studied in its simplest form, as represented bythe diagram, Fig.… … =-B Fig. 285.—Connections of a Telegraphic Line, with Morse Instruments. fore drawn down. In the position of the connections, as represented, nocurrent is passing, but if K be pressed down so as to make connection at i,at the same time it is broken at 2, a current will pass in from the positive…
Inventions
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