GB1448223A - Cahtode ray tubes - Google Patents
Cahtode ray tubesInfo
- Publication number
- GB1448223A GB1448223A GB337073A GB337073A GB1448223A GB 1448223 A GB1448223 A GB 1448223A GB 337073 A GB337073 A GB 337073A GB 337073 A GB337073 A GB 337073A GB 1448223 A GB1448223 A GB 1448223A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistor
- tube
- insulating
- anode
- jan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/96—One or more circuit elements structurally associated with the tube
Landscapes
- Microwave Tubes (AREA)
Abstract
1448223 Cathode-ray tubes FERRANTI Ltd 16 Jan 1974 [23 Jan 1973] 3370/73 Heading H1D In a cathode-ray tube having a final anode which has a significant associated capacitance, and a resistor connected in series with the anode to protect external electrical components from inadvertent current surges generated within the tube, the resistor is printed on to an insulating substrate which is secured within the envelope of the tube. As described, Fig. 1, the resistor 30 is printed on the outer surface of an insulating cylinder through which the electron beam passes, and is connected at its ends to the final anode 20 of the gun, and to the inner and outer graphite or aluminium envelope coatings 23 and 25 via springs 31 and contact 24, the inner wall of the insulating cylinder being coated with chromic oxide to prevent electrostatic charging. In other embodiments, the resistor 30 may be displaced from the axis of the tube, Fig. 3, the beam passing through a shielding metal cylinder 41, and an insulating support 40 being provided, symmetrically disposed with respect to the resistor, to increase rigidity; or one to three resistors and insulating supports may be arranged in an equiangular arrangement (Fig. 6, not shown).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB337073A GB1448223A (en) | 1973-01-23 | 1973-01-23 | Cahtode ray tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB337073A GB1448223A (en) | 1973-01-23 | 1973-01-23 | Cahtode ray tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1448223A true GB1448223A (en) | 1976-09-02 |
Family
ID=9757041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB337073A Expired GB1448223A (en) | 1973-01-23 | 1973-01-23 | Cahtode ray tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1448223A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4161673A (en) * | 1977-06-30 | 1979-07-17 | Zenith Radio Corporation | Arc suppression and static elimination system for a television CRT |
| US4220893A (en) * | 1976-07-26 | 1980-09-02 | Zenith Radio Corporation | Electrically resistive arc suppressor shadowing getter flash |
| GB2122414A (en) * | 1982-06-15 | 1984-01-11 | Thorn Emi Brimar Limited | Cathode ray tubes incorporating a protective resistor |
-
1973
- 1973-01-23 GB GB337073A patent/GB1448223A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4220893A (en) * | 1976-07-26 | 1980-09-02 | Zenith Radio Corporation | Electrically resistive arc suppressor shadowing getter flash |
| US4161673A (en) * | 1977-06-30 | 1979-07-17 | Zenith Radio Corporation | Arc suppression and static elimination system for a television CRT |
| GB2122414A (en) * | 1982-06-15 | 1984-01-11 | Thorn Emi Brimar Limited | Cathode ray tubes incorporating a protective resistor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |