. The Bell System technical journal . UR 1 —V ..^ N V V N, \ S \ \, \ \ \ 45 \ PERMALLOY r— \ s MAGNETIC IRON li/ Ti=ioo *•* 1 V ^s TPERMENDUR1 \ \ ^. \ S, \\ \ ■n=ioo -- V ^ \ = 1000 \ ^^ 1^ = 100 - \ 7\_ri \ r» \ MO PERMALLOY \ MA GNETICRON n = ioo( 3k \ 6 8 10 12 14 16 18 POLARIZING FLUX DENSITY IN GAUSSES 20 100 24 XIO- Fig. 5—Reversible permeability and relative polarized tractive forcefor various magnetic alloys. interrupter contacts, and it is employed in selective ringing on partylines. A high coil inductance is required to limit the transmission ^ K. B. Miller, Manual Switching and Su
. The Bell System technical journal . UR 1 —V ..^ N V V N, \ S \ \, \ \ \ 45 \ PERMALLOY r— \ s MAGNETIC IRON li/ Ti=ioo *•* 1 V ^s TPERMENDUR1 \ \ ^. \ S, \\ \ ■n=ioo -- V ^ \ = 1000 \ ^^ 1^ = 100 - \ 7\_ri \ r» \ MO PERMALLOY \ MA GNETICRON n = ioo( 3k \ 6 8 10 12 14 16 18 POLARIZING FLUX DENSITY IN GAUSSES 20 100 24 XIO- Fig. 5—Reversible permeability and relative polarized tractive forcefor various magnetic alloys. interrupter contacts, and it is employed in selective ringing on partylines. A high coil inductance is required to limit the transmission ^ K. B. Miller, Manual Switching and Substation Equipment (McGraw-Hill,1933 ed.), p. 67. MAGNETIC MATERIALS IN TELEPHONE SYSTEM 453 losses due to the shunting effect of ringers across the Hne, especiallyin the case of party lines. The third application of polarized structures is in certain relays forcomposite ringing, duplex telegraph, and special selecting materials are used in such relays, depending upon the sensi-. DIAPHRAGM AIR GAPS-
Size: 2003px × 1247px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
