. The Bell System technical journal . PULL AND MAGNKTlZATlON 81 ^ y -/ 5^^ GAP, X,IN CM / u y/ ^/// / /// / o5^ / / / /f 1 V/ A /o- / // V/ y // / / //// { / i l/i t 11 f /// 4 8 12 16 20 ABAMPERE TURNS, NI Fig. 1 — Magnetization curves. t)y A. C. Keller. In this case it is convenient to measure x at the centerline of the actuating card, whose location with respect to the axis ofrotation is indicated in Fig. 2. Apart from interpretation in terms of magnetic theory, any observedpoint on a magnetization curve represents a measurement of the elec-trical energy JJ stored in the coil,
. The Bell System technical journal . PULL AND MAGNKTlZATlON 81 ^ y -/ 5^^ GAP, X,IN CM / u y/ ^/// / /// / o5^ / / / /f 1 V/ A /o- / // V/ y // / / //// { / i l/i t 11 f /// 4 8 12 16 20 ABAMPERE TURNS, NI Fig. 1 — Magnetization curves. t)y A. C. Keller. In this case it is convenient to measure x at the centerline of the actuating card, whose location with respect to the axis ofrotation is indicated in Fig. 2. Apart from interpretation in terms of magnetic theory, any observedpoint on a magnetization curve represents a measurement of the elec-trical energy JJ stored in the coil, as given by the integral Jo ei dt, where e = d{Nip)/dt. It is represented by the area between the magneti-zation curve and the axis of ^, and is given by: U f Jo NI dip. (1) This stored field energy may, in principle, be recovered in the decayof the field, except for the portion lost l)y hysteresis in the mateiial,represented by the area between the increasing and decreasing mag- 82 THK BELL SYSTEM TECHNICAL JOURNAL, JANUARY 1954.
Size: 1975px × 1266px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
