. Röntgen rays and electro-therapeutics : with chapters on radium and phototherapy . Tiint Fig. 81E.—Diagram of the current in a tube supplied by an induction coil. current, owing to the proportional increase in the resistance. To regulatethe current intensity a rheostat is provided in the primary circuit of themotor converter JJ. When the energy is taken from a direct-currentsource, the number of cycles and the primary tension of the alternatingcurrent may be controlled by placing another rheostat in series with theprimary coil of the transformer. 174 ELECTRO-THEEAPEUTICS. ^ The metliod of re
. Röntgen rays and electro-therapeutics : with chapters on radium and phototherapy . Tiint Fig. 81E.—Diagram of the current in a tube supplied by an induction coil. current, owing to the proportional increase in the resistance. To regulatethe current intensity a rheostat is provided in the primary circuit of themotor converter JJ. When the energy is taken from a direct-currentsource, the number of cycles and the primary tension of the alternatingcurrent may be controlled by placing another rheostat in series with theprimary coil of the transformer. 174 ELECTRO-THEEAPEUTICS. ^ The metliod of regulation is very simple and requires the manipula-tion of two levers only. One of these adjusts the tension to the vacuumof the tube while the other controls the current intensity. The hemispheri-cal light zone is very distinct, showing that no inverse current is ^^^SrWJwvJ Fig. 81F.—Diagrammatic view of X-ray apparatus without an interrupter, for converting the direct into an alternating current. loo-Plate Static Machine. This machine, devised by Dr. E. Y. Wagner, of Chicago, is a 100-plate machine composed of 50 stationary glass plates (31 inches indiameter) and 50 revolving mica plates (28 inches in diameter). Theseare driven by a motor connected vertically through the upperend of the axle, which is vertical. The cabinet is hexagonal and istopped with a crown. It is claimed that this machine is capable ofgiving anywhere from 1800 to 6000 revolutions per minute. Dr. Henry Hulst, of Grand Rapids, Michigan, who is using thismachine, has kindly furnished me the following data: The axle is vertical and the plates horizontal instead of vice motor is a 5-horsepower, 110-volt, callable of giving 1800 revolutionsper minute, placed on top and connected with a pin coupling to the shaftsThe end-thrust bearing consists of two ball-bea
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradiolo, bookyear1910
