. The principles and practice of roentgenological technique . Fig. 44a booster and the secondary was designed todeliver 20 volts, the e. m. f. impressed on theload would be 220 volts and any drop of pres-sure in the load would be compensated for byinductive action and thus the pressure on theload kept constant. y /ton F/^mc. /yoMi/c Cor^ ■40 JO Fig, /o, ?o 00 m/ummp£:r£:s /—Graphic chart illustrating the comparisonof magnetic auto-transformer and rheostaticcontrol for x-ray transformer (A. M. Cole.) Onthe 14th button there is a drop of 10,000 voltswith the increase of the current fro


. The principles and practice of roentgenological technique . Fig. 44a booster and the secondary was designed todeliver 20 volts, the e. m. f. impressed on theload would be 220 volts and any drop of pres-sure in the load would be compensated for byinductive action and thus the pressure on theload kept constant. y /ton F/^mc. /yoMi/c Cor^ ■40 JO Fig, /o, ?o 00 m/ummp£:r£:s /—Graphic chart illustrating the comparisonof magnetic auto-transformer and rheostaticcontrol for x-ray transformer (A. M. Cole.) Onthe 14th button there is a drop of 10,000 voltswith the increase of the current from 10 to 20mills under rheostat control while with the auto-transformer control the drop is very slight. (Fig. -Wc.) The primary winding is connected(parallel) across a constant voltage in the I ZeroFig. 446- (Croft.) There is another form of induction regu-lator so arranged that the e. m. f. induced onthe secondary winding may be varied at stationary windings are on a hollow,cylindrical, laminated iron core. The movablewinding is mounted on an iron cylinder withinthe stationary windings. (Figs. 44a, 44b.) When the movable coil is so placed that all COIL AXD TRANSFORMER DISCHARGES 45 tlie flux induced by the statiimary cuils passesthrough it, the voltage induced in the second-ary is at a maximum. The mo


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Keywords: ., bookcentury1900, bookdecade1920, booksubjectradiogr, bookyear1920