. The American journal of roentgenology, radium therapy and nuclear medicine . igure this case the stabilizer becomes part ofthe high tension circuit. Figure 3 shows an experimental model ofthe stabilizer. Table I shows the effect of line-voltagevariations on a tube without stabiHzer, andthe same tube with the stabilizer in circuit. T^BLE I IViflio! (f Stabiliser With Stabilizer Volts Ma. Volts Ma. 77 70 80 3-3 77 82 4-3 84 84-5 87 .90 93-5 99 95 13-8 103 The stabilizer in
. The American journal of roentgenology, radium therapy and nuclear medicine . igure this case the stabilizer becomes part ofthe high tension circuit. Figure 3 shows an experimental model ofthe stabilizer. Table I shows the effect of line-voltagevariations on a tube without stabiHzer, andthe same tube with the stabilizer in circuit. T^BLE I IViflio! (f Stabiliser With Stabilizer Volts Ma. Volts Ma. 77 70 80 3-3 77 82 4-3 84 84-5 87 .90 93-5 99 95 13-8 103 The stabilizer in this case was set for ma. Table II shows how the stabilizer main-tains the current through a radiator type tubeduring a long exposure. The tube was firstconnected to a filament control rheostat inthe regular way and the current adjusted to10 ma. Readings were then taken every halfminute up to three minutes. The tube wasthen allowed to cool and the stabilizer con-nected in circuit. Current was adjusted to 10ma. and readings were taken again. I The Kearsley Stabilizer 601. i Fig. 3. Without Stabilizer IFt//! Stabili. :er Time il/a. Time Ma. 0 Min. 0 Min. 10 /2 /2 10 I 9-3 I 10 1/2 1/2 10 2 87 2 10 2/2 2/2 10 3 3 10 Figure 4 shows curves made with an os-cillograph. The tube was of the self-rectify-ing type. The lower curve represents a hightension current of 15 ma. through the tubeand the upper one the filament current takenat the same time. The small irregular linesin the filament current curve show the pointsat which the stabilizer contacts opened toprevent a further rise in milliamperagethrough the tube. It will be noticed thatthere is a break in the filament current curvefor each cycle of current through the tube. This shows that the vibrating armaturevibrates in synchronism with the alternatingcurrent supplying the tube. This is the armature did not vibrate in synchro-nism, the filament current would not be ad-justed to the correct value
Size: 2392px × 1044px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthoramerican, bookcentury1900, bookdecade1900, bookyear1906
