Electron gun structure

Details Electron gun structure Electron gun structure

1979-04-04

1981-10-27

Demeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

313270, H01J 2902

Patent

active

042976120

ABSTRACT:
An electron gun structure which includes at least one cathode electrode, a plurality of grid electrodes including a first grid electrode, and a heater coil. The cathode electrode consists of a tubular cathode sleeve and an electron emissive coating formed on the closed end of it. The heater coil is positioned within the cathode sleeve and has legs welded to the heater supporting straps. The surfaces of the heater straps adjacent cathode sleeve are constructed such that the arcing start potential between the cathode electrode and the heater supporting straps is lower than the arcing start potential between the cathode electrode and the heater coil, thereby preventing arcing to the heater itself. Furthermore, the arcing start potential between the exposed metal part of the cathode electrode and the first grid electrode is made lower than the arcing start potential between the electron emissive coating on the cathode sleeve and the first grid electrode, so that undesired arcing to the electron emissive coating is also prevented.

REFERENCES:
patent: 4071803 (1978-01-01), Takanashi et al.

Affiliated with

Also associated with

Rating

Electron gun structure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electron gun structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electron gun structure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-281536