JPS6482495A - Filament heating circuit for x-ray tube - Google Patents
Filament heating circuit for x-ray tubeInfo
- Publication number
- JPS6482495A JPS6482495A JP23731687A JP23731687A JPS6482495A JP S6482495 A JPS6482495 A JP S6482495A JP 23731687 A JP23731687 A JP 23731687A JP 23731687 A JP23731687 A JP 23731687A JP S6482495 A JPS6482495 A JP S6482495A
- Authority
- JP
- Japan
- Prior art keywords
- filament
- ray tube
- constant
- electric power
- surface temperature
- 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
Abstract
PURPOSE:To reduce the aging change of the tube current by feeding back the electric power to a filament. CONSTITUTION:The tube current of an X-ray tube 5 is adjusted by adjusting the heating quantity of a filament 9 to control the quantity of the thermoelectrons emitted from the filament 9. If the tube voltage of the X-ray tube 5 is constant, the quantity of the thermoelectrons emitted from the filament 9 is a function of the surface temperature of the filament 9, and this surface temperature is a function of the electric power heating the filament 9. When the feedback control is performed to invariably feed the constant electric power to the filament 9, the surface temperature of the filament 9 is kept constant, and the quantity of the thermoelectrons emitted from the filament 9 is constant. The aging change of the tube current can be thereby reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23731687A JPS6482495A (en) | 1987-09-24 | 1987-09-24 | Filament heating circuit for x-ray tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23731687A JPS6482495A (en) | 1987-09-24 | 1987-09-24 | Filament heating circuit for x-ray tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6482495A true JPS6482495A (en) | 1989-03-28 |
Family
ID=17013562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23731687A Pending JPS6482495A (en) | 1987-09-24 | 1987-09-24 | Filament heating circuit for x-ray tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6482495A (en) |
-
1987
- 1987-09-24 JP JP23731687A patent/JPS6482495A/en active Pending
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