. The Bell System technical journal . CORONA ESTABLISHEDON POINT V=8000 _ V=500 E = 32,000V/CM E = 10,000 V/CM V=2000E = 8000 V/CM. 600 X 10^ 100 X 10^ SECONDS AFTER PREVIOUS SPARK Fig. .S-—Above, perspective drawing of rotar\- s»ip showing arrangement o£ coronapoints. Below, diagram showing voltage (l), and mean voltage gradient (E) at varioustimes in the spark-over region. base as the electrodes. The moving electrodes pass between the fixedelectrodes and their associated corona points. This arrangement is clarifiedin the diagram which is a section through a plane normal to the electro
. The Bell System technical journal . CORONA ESTABLISHEDON POINT V=8000 _ V=500 E = 32,000V/CM E = 10,000 V/CM V=2000E = 8000 V/CM. 600 X 10^ 100 X 10^ SECONDS AFTER PREVIOUS SPARK Fig. .S-—Above, perspective drawing of rotar\- s»ip showing arrangement o£ coronapoints. Below, diagram showing voltage (l), and mean voltage gradient (E) at varioustimes in the spark-over region. base as the electrodes. The moving electrodes pass between the fixedelectrodes and their associated corona points. This arrangement is clarifiedin the diagram which is a section through a plane normal to the electrode 568 BELL SYSTEM TECHNICAL JOURNAL axes and passing through the region of overlap. The shaded areas are forthe sparking position as indicated and the location of the corona point isshown to scale. Experiment shows that when the moving electrode hasreached the position corresponding to 400 X 10~^ seconds after the previousspark, corona is established on the point. Thus the cathode is irradiated for200 X 10~^ seconds prior to breakdown. No serious erosion problem was encountered when these gaps were oper-ated for many hun
Size: 2250px × 1111px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
