. An elementary manual of radiotelegraphy and radiotelephony for students and operators . Fig. 11. 52 RADIOTELEGRAPHY If tlie core is periodically mngnetised and demagnetised, it exertsattractive impulses on the iron armature and maintains it inmotion. The break is so connected in the primary coil circuitthat the current flowing through it passes through the jet ofmercury and tlien magnetises the core of the coil. This magnetismis made to attract the Z-shaped iron and pull it round into aposition in which the jet no longer impinges on the target circuit is then interrupted and tire c
. An elementary manual of radiotelegraphy and radiotelephony for students and operators . Fig. 11. 52 RADIOTELEGRAPHY If tlie core is periodically mngnetised and demagnetised, it exertsattractive impulses on the iron armature and maintains it inmotion. The break is so connected in the primary coil circuitthat the current flowing through it passes through the jet ofmercury and tlien magnetises the core of the coil. This magnetismis made to attract the Z-shaped iron and pull it round into aposition in which the jet no longer impinges on the target circuit is then interrupted and tire coil core loses its pump, however, continues to revolve by its own inertia andimmediately closes the circuit again and so repeats the process. Tostart the break an initial twist must be given to it by hand andthen after that the intermittent magnetic impulses of the coil coremaintain it in motion. To prevent oxidation of the mercury thechamber is kept full of coal gas. This is supplied from a smallsteel bottle, and as the gas is not used up but only exhausted veryslowly b
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1916
