JPS6482495A - Filament heating circuit for x-ray tube - Google Patents

Filament heating circuit for x-ray tube

Info

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
Application number
JP23731687A
Other languages
Japanese (ja)
Inventor
Fumio Ishiyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP23731687A priority Critical patent/JPS6482495A/en
Publication of JPS6482495A publication Critical patent/JPS6482495A/en
Pending legal-status Critical Current

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.
JP23731687A 1987-09-24 1987-09-24 Filament heating circuit for x-ray tube Pending JPS6482495A (en)

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)

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