. The Bell System technical journal . ^^ $:: ■^^s \ \\ \ N c 3 5 7 10 15 y 20 30/ (e) V < V •>. \^ ^^ -ii *K >N V, >. 1 ^ ^ <I^Sx _7. ^ ■c^^Z --_^ — ~ 1020 — -- - ~ -^^, — — — _ —- — 30 — -, - N/ X 10-3 = 20 R, + R2. RELAY NO. 1HAS MOST POWER -LARGE G FOR BOTH RELAY NO. 2- HAS MOST POWERSMALL G FOR BOTH ^/N, 5 6 7 8 9 10 series relaj-s versus turns ratio. 176 THE BELL SYSTEM TECHNICAL JOURNAL, JANUARY 1954 N 2^x10-3 j IN KILOMHOS R,+ R 50 1 ?n 10 __- ^ .— - 5 n 2 _ — 1 -^ TWO AF RELAYS IN SERIES 5 6 7 8 9 10 E^ TOTAL
. The Bell System technical journal . ^^ $:: ■^^s \ \\ \ N c 3 5 7 10 15 y 20 30/ (e) V < V •>. \^ ^^ -ii *K >N V, >. 1 ^ ^ <I^Sx _7. ^ ■c^^Z --_^ — ~ 1020 — -- - ~ -^^, — — — _ —- — 30 — -, - N/ X 10-3 = 20 R, + R2. RELAY NO. 1HAS MOST POWER -LARGE G FOR BOTH RELAY NO. 2- HAS MOST POWERSMALL G FOR BOTH ^/N, 5 6 7 8 9 10 series relaj-s versus turns ratio. 176 THE BELL SYSTEM TECHNICAL JOURNAL, JANUARY 1954 N 2^x10-3 j IN KILOMHOS R,+ R 50 1 ?n 10 __- ^ .— - 5 n 2 _ — 1 -^ TWO AF RELAYS IN SERIES 5 6 7 8 9 10 E^ TOTAL POWER = R, + R2 Fig. 12 — Optimum turns ratio for speed on relay No. 1, No. 2 known. THE OMISSION OF EDDY CURRENT CORRECTIONS The foregoing discussion of series connected relays developed trans-formation relationships ignoring eddy current effects. The followingdiscussion will qualitatively show that ignoring the eddy current effectsintroduces second or smaller order errors. For very large coil constants and different magnetic structures, thecore constants can be ignored. With large coils, the current and flux riseare influenced very little by the core constant. As the coil constant isreduced, the core effect becomes more i
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
