File:An Oscillographic investigation of current and EMF- waves of telephone magneto generators (1907) (14569723810).jpg

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Identifier: oscillographicin00morr (find matches)
Title: An Oscillographic investigation of current and EMF- waves of telephone magneto generators
Year: 1907 (1900s)
Authors: Morrison, Rudolph A Lurvey, David Reker, William
Subjects:
Publisher:
Contributing Library: Paul V. Galvin Library, Illinois Institute of Technology
Digitizing Sponsor: CARLI: Consortium of Academic and Research Libraries in Illinois

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e of one meter from the mirrorE, The Zero reading of E v/as taken v.dth the switch on thepoints cd,therefore with E short circuited or discharged.Theswitch was then reversed to ah, and the voltage was steadilyincreased hy ten volt increments to the maximum point andimiaediately after it was steadily decreased hack to zero.The deflections of the electrostatic voltmeter,in milli-meterswere taken at eacli interval. Erom the two sets of readings an average was taken seeTahle # 3«Anda curve plotted having deflections in mii.as ahscissae, and volts for ordinate s. This calihration curve isshown in the accompanying blueprint. TABLE #3Calioration of electurostatic voltmeterDeflection in m.ra. Voltage Ascending I 0 0 10 3 2.6 9 30 20 40 34 50 55 60 79 70 108 80 138 90 179 100 224 110 277 120 335 130 403 140 485 150 573 160 680 166 760 lending Avera-ge 0 0 5 4 12 10.5 23 21.5 38 36 59 57 84 81.5 112 110 146 140 139 184 253 228.5 284 280.5 344 339.5 414 405.5 49 4 489.5 585 579 69 2 686 760 760
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■■■■■■■■■■■■■■■a■■■■■■■■■■■•■■■■■■■■I !■■■■■■■■■■■>■■■■■■■■■■■■■■■■■■•■■■•«, Hiiaafl ■■■■■ ■■fbi ■■■■■■■■■■■■■■■■■«■■ EUGENE DICTZGEN CO.. CHICAGO. Production of the E.M.^.Wave, The electro-motive force at any instant is proportionalto the rate at which a conductor cuts the lines of force.As the conductor moves around from point to point the rate ofcutting changes. Consider one conductor starting at A moving around in thefield produced by the two poles,itf,and S of a magneto generator,as shown in figure no.Sr,

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Morrison, Rudolph A; Lurvey, David;

Reker, William
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27 July 2014
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