JPS6414845A - High voltage processing method for cathode-ray tube - Google Patents
High voltage processing method for cathode-ray tubeInfo
- Publication number
- JPS6414845A JPS6414845A JP17149587A JP17149587A JPS6414845A JP S6414845 A JPS6414845 A JP S6414845A JP 17149587 A JP17149587 A JP 17149587A JP 17149587 A JP17149587 A JP 17149587A JP S6414845 A JPS6414845 A JP S6414845A
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- sec
- high voltage
- voltage
- anode
- 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.)
- Pending
Links
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
PURPOSE:To remove a micro-projection well from the surface of a cathode by specifying the pulse width of pulse voltage applied between an anode and a cathode. CONSTITUTION:First of all, a high frequency of 17.5kHz/sec. is used as a power supply 1, boostered via a step-up transformer 2 and rectified via a diode 3. The positive side of high voltage is connected with the anode 5 of a cathode ray tube 4 and the negative side is connected with a heater 6, a cathode 7 and each electrode of the first 8, second 9 and third grid electrodes 10. Thereafter, the primary side voltage of the step-up transformer 2 is raised and pulse voltage having a pulse width of 10<-7> to 10<-4> sec. is applied between the anode 5 and the cathode 7, thereby processing high voltage. In this case, a high frequency ranging over 10kHz/sec to 10MHz/sec can also be used as a high frequency power supply.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17149587A JPS6414845A (en) | 1987-07-08 | 1987-07-08 | High voltage processing method for cathode-ray tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17149587A JPS6414845A (en) | 1987-07-08 | 1987-07-08 | High voltage processing method for cathode-ray tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6414845A true JPS6414845A (en) | 1989-01-19 |
Family
ID=15924157
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17149587A Pending JPS6414845A (en) | 1987-07-08 | 1987-07-08 | High voltage processing method for cathode-ray tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6414845A (en) |
-
1987
- 1987-07-08 JP JP17149587A patent/JPS6414845A/en active Pending
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