A comparison of American direct-current switchboard voltmeters and ammeters (1911)
National Bureau of Standards · leaf 13
0-2.0 , ^^ r r— \ 0 < +2.0 0 UJ-2.0< • , . f 0 CO d+2.0 3 li. c ^ >. ii. 0 0 ^-2.0 u0 cr UJ ^+2.0 ( ^__< r c 0cc ^-2.0 42.0 >- Os-2.0+2.0 C-2.0 + 2.0 c >— C^2.0 ^ >> (7 2> ^ i? G R 0 20 40 60 80 100 120 140 160 VOLTS. Fig. 2.—Calibration Curves of Voltmeters 4IO Bulletin… … Fig. 3.—Calibration Curves of Ammeters should be uniform, as in that case the scale will be one of equaldivisions. As to making the final adjustment of the sensibility, 22J American Voltmeters and Ammeters 411 this can be done in several ways. In a voltmeter the strengthof the magnets or springs…
Measurements and use of instruments · electrical engineering/ B8000 Power systems and applications
Internet Archive · NIST Research Library · Public Domain Mark 1.0. Free to use for anything.
