. The Bell System technical journal . 20 LOG -r^ Fis;. 7—Deflection response of the phase 10 15 20 26 JO 35 40 45 50 55 60 DEPARTURE,!, OF E, AND Ej FROM QUADRATURE Fig. 8—Phase error A\t for unequal inputs. ferential rectifiers with a high resistance load consisting of hermeticallysealed carbon deposited resistors closely matched for value and temperaturecoefficient and specially mounted to minimize temperature dififerential output of the rectifiers is amplified in a feedback stabilized MEASURfXG SySTK.\f FOR VIDEO 233 d-c. ami)lirier which luis adjusluble gain to
. The Bell System technical journal . 20 LOG -r^ Fis;. 7—Deflection response of the phase 10 15 20 26 JO 35 40 45 50 55 60 DEPARTURE,!, OF E, AND Ej FROM QUADRATURE Fig. 8—Phase error A\t for unequal inputs. ferential rectifiers with a high resistance load consisting of hermeticallysealed carbon deposited resistors closely matched for value and temperaturecoefficient and specially mounted to minimize temperature dififerential output of the rectifiers is amplified in a feedback stabilized MEASURfXG SySTK.\f FOR VIDEO 233 d-c. ami)lirier which luis adjusluble gain to adjust scale factors on theindicator. The phase detection circuit is energized from the output of thephase bridge and the almost identical transmission detection circuit isenergized from the inputs to the phase bridge. Thus both phase andtransmission are measured simultaneously. Each indicator (Fig. 9) has three sca\es, fine ( — 5° to +5°; —1 db to +1db), coarse (-90° to +90°; -10 db to +3 db), and null balance. Thefine and coarse scales are linear while the null balance scale has ma
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
