Cathode ray tube with internal arc suppressor and protective spark gap
AssigneeGTE Products Corporation
InventorMartin Fischman
Life of this patent
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Abstract
Processing of arc suppression color cathode ray tubes is enhanced by providing a spark gap (42) across a limiting resistor used in the tube. The use of the spark gap allows the use of lower processing voltages and enhances electron gun clean up by burning off loose particles.
Claims2
In a cathode ray tube including a high resistance coating on the interior thereof, an electron gun having a plurality of axially aligned electrodes having varying spaces therebetween and an antenna getter mounted upon the final one of said electrodes, said antenna getter being substantially electrically insulated from said final electrode by a resistor, the improvement comprising:
- a spark gap across said resistor defining a sparking potential greater than the sparking potential existing between any adjacent pair of electrodes of said electron gun at normal operating tube voltages and lower than that inherently existing across said resistor.
Dependencies are inferred from the claim text.