. The principles and practice of roentgenological technique . ach lampwill allow one ampere of charging current topass through the battery, so that the numberof lamps required will depend upon the chargerate of the battery. For instance, if the chargerate is 6 amperes, six lamps will be required. If 32 candle power lamps are not avail-able, then double the number of 16 candlepower lamps will be required. If tungsten orother high efficiency lamps are used, more willbe required than if carbon filament lamps areused, owing to the lower current rating of theformer. If the battery is to be charged
. The principles and practice of roentgenological technique . ach lampwill allow one ampere of charging current topass through the battery, so that the numberof lamps required will depend upon the chargerate of the battery. For instance, if the chargerate is 6 amperes, six lamps will be required. If 32 candle power lamps are not avail-able, then double the number of 16 candlepower lamps will be required. If tungsten orother high efficiency lamps are used, more willbe required than if carbon filament lamps areused, owing to the lower current rating of theformer. If the battery is to be charged from a 220volt circuit, use two lamps in series in placeof each of the lamps necessary when charg-ing from 110 volts. If a 500 to 600 volt circuit is available, it isnecessary to use five lamps in series in place [49] 50 ACCU:\IULATORS of each of the lamps used when charging from110 volts. The storage batteries may be charged froma dynamo or generator, activated by a gasoHneengine, or the energy may be obtained di-rectly from a dynamo (motor generator) con-. FiG. 55.—Gas engine generating set, capable of pro-ducing 1000 watts, either in the form of 14 am-peres and 65 volts or 8 amperes and no motor makes 800 revolutions a is connected to a direct current generatingset. MlUI-Jf^MCTCH f~\ A-/ttr TFAnSroR/^ER- B0OZ7CF
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectradiogr, bookyear1920
