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In the above diagram, H = filament, 4 volts. K = cathode, 0 to 250 volts
(brightness control). W = control grid (wehnelt). HA = Screen grid (hilfsanode),
about 300 volts.
Bl.1 = focus diaphragm (blende 1),
600 to 1200 volts (focus control). A = Anode, E.H.T. 8 KV.
(click on pictures for high resolution images) Courtesy of Eckhard Etzold |
