Elementary telegraphy : a manual for students; written specially to meet the requirements of the ordinary grade of the subject as published in the syllabus of the city and guilds of London Institute (1910)
Pendry, H. W. (Henry Walter) · London ; New York : Whittaker & Co. · leaf 122
unding the point of breakdown to be ftised intominute globules. The separation of these globules fromeach other and from the surrounding metallic surface TniMkAPH INSTMUMMTS 111 effectually isolates the point of breakcloAvii, and the defectis thus instantly sealed up. Condensers after having been… … Ilo. S9.—72.j m.f. cuhdeiiser. purposes in duplex circuits is divided into two sectionsAvliich can be usetl separately, but if joined by the strapshown in illustration Fig. 89 and Diag. 90, it has a tola!capacity of 725 m.f. by steps of I m.f. The capacity maybe varied by inserting pegs between the…
Telegraph
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