. Electrical ignition. correctly so far as the authors knowledge goes,since the wave form of flux distribution,therefore that is far from a sinusoidal. In spite of this fact the relations,, exist among theflux, and current may be expressed in an equation, e = — /o9aj d^ IlMZE ^bJL£2 where 7cN4ui is opposing flux due to the current in thearmature. ¥e know the instantaneous value of <fc and the con-stant Na, but we do not know the value of u which is somefunction of the armature current. So if it is assumed thatthe value of magnetic permeability u is constant and the mag-n
. Electrical ignition. correctly so far as the authors knowledge goes,since the wave form of flux distribution,therefore that is far from a sinusoidal. In spite of this fact the relations,, exist among theflux, and current may be expressed in an equation, e = — /o9aj d^ IlMZE ^bJL£2 where 7cN4ui is opposing flux due to the current in thearmature. ¥e know the instantaneous value of <fc and the con-stant Na, but we do not know the value of u which is somefunction of the armature current. So if it is assumed thatthe value of magnetic permeability u is constant and the mag-nitude of which is unity, then it is possible to calculate ap-proximately the wave form of the under short circuitconditions from the following equation, provided the instant-aneous values of the load current are known. Substituting O for 2;z:ft and changing the differen-tials d(<£+ ) and d# to increments ^ + ^-i)and A 0 , we have Taking the increment of the angle as 10° which is equal to. 30 Ft-H 25 Bosch 31 Table 4 Calculations of the ITlux Distribution VJaves under Short Circuit JonditionSplitdorf Low Tension Magneto f = 120 K 0 e 4> + .4-71/val -10 . 66160. -1115. 65045. 0 66160. -1039. 65121. 10 -6,23 65679. -940. 64739. 20 54990. -836. 64154. 30 63554. -740. 62814. 40 61634. -627. 61007. 50 58994. -502. 58492. 60 55495. -376. 55119. 70 47325. -171. 47654. 80 31375. 228. 31603. 90 -7606. 926. -6630. 100 -34000. 1158. -32342. 110 -46356. 12>^> 5. -45231. 120 -53776. 1245. -52531. 130 -58696. 1252. -57444. 140 -61696. 1242. -60454. 150 -63856. 1220, -62636. 160 -65271. 1175. -64096. 170 -66160. 1115. -65045. 180 -66160. 1039. -65121. 190 -65679 940 -64739 K = e 1-76. -382. + .25 -585. .386 -1340. .885 -1807. * id 515 * -3373. 2 • 22 -7465, -16051. -38283. -26162. -12389. 8.
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