Getter support means for cathode ray tubes

Details Getter support means for cathode ray tubes Getter support means for cathode ray tubes

H - Electricity

01

J

313/35

H01J 29/00 (2006.01) H01J 29/94 (2006.01)

Patent

CA 1160671

ABSTRACT OF THE DISCLOSURE This disclosure depicts an arc-suppression means for use in cathode ray tubes having an electron gun and ancillary electrical circuits susceptible to damaging electrical arcing currents, and wherein getter means are used to capture residual gases in the evacuated envelope of the tube. The arc-suppression means is electrically resistive and is connected in an electrical path between the gun and a high voltage source, and its surface is physically exposed to a deposit of getter material when the getter is flashed. The arc-suppression means includes shadowing means for shadowing at least portions of the exposed surface from a deposit of the getter material to prevent the creation of an electrically conductive shorting path capable of permit- ting an arc to bypass or substantially nullify the arc- suppression means.

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