. Electrical ignition. tant for a set of films tobe taken including a calibration film which definitely de-termines the position of movable brush. Since there exists atime lag from the instant the shutter circuit is closed tillthe mercury switch B opens or closes and the constancy ofthis Lime lag depends entirely upon the constancy of thecircuits condition. — wm^m,— V 4 The following oscillograms show the transient shortcircuit currents of a magneto generator running at the speedof 1£00 The switch was set to close the circuit at0° , 30°, 60°, 75°, and 90° respectively. 4JU-ie Hiowever,
. Electrical ignition. tant for a set of films tobe taken including a calibration film which definitely de-termines the position of movable brush. Since there exists atime lag from the instant the shutter circuit is closed tillthe mercury switch B opens or closes and the constancy ofthis Lime lag depends entirely upon the constancy of thecircuits condition. — wm^m,— V 4 The following oscillograms show the transient shortcircuit currents of a magneto generator running at the speedof 1£00 The switch was set to close the circuit at0° , 30°, 60°, 75°, and 90° respectively. 4JU-ie Hiowever, tfi£actual measurement shows a slight error each picture, themaximumAwhich is one and eight tenths electrical degree orone four thousandth of k&e second. It is possible, so far as the authors opinion isconcerned, to make this apparatus accurate within an errorof two electrical degrees at the frequency of 60 cycles ornearly one ten thousandth of the second, if a slight im-provement is given to the ~Fta Q Swich Set -for 0° Ca/i6 raff/o rr Q ° s
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Keywords: ., bookcentury1900, bookdecade1910, bookidelectri, booksubjecttheses
