Determination of current and candle power curves of the alternating current arc under impressed voltage of various wave forms . ith it and the drop over this re-sistance balanced, as in obtaining the instantaneousvalues of the voltage against the voltage of the storagebatteries. Since this kiiovm resistance is non-inductive,the current is then easily calculated by Ohns law, foreach value of the drop obtained. The connections of the curve tracing table areshown on Print 8. The leads from the storage batteriesare brought to the binding posts, a, which are connectedto one side of the potential rh
Determination of current and candle power curves of the alternating current arc under impressed voltage of various wave forms . ith it and the drop over this re-sistance balanced, as in obtaining the instantaneousvalues of the voltage against the voltage of the storagebatteries. Since this kiiovm resistance is non-inductive,the current is then easily calculated by Ohns law, foreach value of the drop obtained. The connections of the curve tracing table areshown on Print 8. The leads from the storage batteriesare brought to the binding posts, a, which are connectedto one side of the potential rheostat, c, through thedouble pole switch, b. The remaining side of the rheostatis connected to the middle points of the double throwswitch, t. Across these same points, the terminals of thevoltmeter, d, through the contact switch, e, which pei-mitsthe use of either scale of the voltmeter. In series withthe switch, t, are connected the galvanometer, f, the con-tact key, h, and the contact maker, which is connectedbetween the binding posts, i. The voltage to be measuredis brought to the binding posts, s, v/hich serve as the. PRINT 8. 27 terminals of IE sixteen candle power incandescent lampsin series. The drop over two of these lamps is used inbalancing. The leads across these lamps are shown at thebinding posts, k, which are connected to the switch, connections to the switch, n, and to the galvanometercircuit are shov/n and are such that with switches, m and n,as shown, the instantaneous values of the alternatingvoltage mfy he balanced against the storage battery volt-age by means of adjusting the rheostat, o. The balanceis shown by no deflection of galvanometer, f, when thekey, h, is closed. The voltmeter, d, then reads the in-stantaneous values of the voltage, which multiplied byratio of the number of lamps used, gives the total volt-age at that instant. The binding posts, j, are connect-ed across the terminals of the known resistance mentionedabove. V/ith switch, 1, in
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Keywords: ., bookcentury1900, bookdecade1900, bookiddeterminatio, bookyear1905
