JPS57141900A - X-ray apparatus - Google Patents

X-ray apparatus

Info

Publication number
JPS57141900A
JPS57141900A JP2674981A JP2674981A JPS57141900A JP S57141900 A JPS57141900 A JP S57141900A JP 2674981 A JP2674981 A JP 2674981A JP 2674981 A JP2674981 A JP 2674981A JP S57141900 A JPS57141900 A JP S57141900A
Authority
JP
Japan
Prior art keywords
voltage
tetrode
state
steady
switch
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
JP2674981A
Other languages
Japanese (ja)
Inventor
Kazuo Yamamoto
Kazuo Kaneko
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.)
Hitachi Healthcare Manufacturing Ltd
Original Assignee
Hitachi Medical 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 Hitachi Medical Corp filed Critical Hitachi Medical Corp
Priority to JP2674981A priority Critical patent/JPS57141900A/en
Publication of JPS57141900A publication Critical patent/JPS57141900A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08—Electrical details
    • H05G1/26—Measuring, controlling or protecting
    • H05G1/30—Controlling
    • H05G1/32—Supply voltage of the X-ray apparatus or tube

Abstract

PURPOSE:To obtain an X-ray tube voltage having no overshoot by giving a lower bias than a steady-state value to a screen grid in off state of a tetrode tube, and switching to the steady-state value when a switch is turned on. CONSTITUTION:Since an output voltage of a high voltage generator 41 is higher than the steady-state voltage immediately after a tetrode tube 103 is switched on, it operates to lower the bias of a screen grid G2 of the tetrode 103. When the switch of the tetrode 103 is off, swtiching elements B of analog switches 21, 22 are closed and the bias of an adequate low voltage V is applied to the screen grid G2 by setting devices 23, 24. Therefore, X-ray tube voltage which can be started in the state sufficiently suppressing the overshoot of the X-ray tube voltage which takes place when the switch is on, can be obtained.
JP2674981A 1981-02-27 1981-02-27 X-ray apparatus Pending JPS57141900A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2674981A JPS57141900A (en) 1981-02-27 1981-02-27 X-ray apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2674981A JPS57141900A (en) 1981-02-27 1981-02-27 X-ray apparatus

Publications (1)

Publication Number Publication Date
JPS57141900A true JPS57141900A (en) 1982-09-02

Family

ID=12201936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2674981A Pending JPS57141900A (en) 1981-02-27 1981-02-27 X-ray apparatus

Country Status (1)

Country Link
JP (1) JPS57141900A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4844469U (en) * 1971-09-30 1973-06-09
JPS50159691A (en) * 1974-06-13 1975-12-24
JPS5183453A (en) * 1975-01-20 1976-07-22 Hitachi Electronics JIDORITOKUSEIGYOHOSHIKI

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4844469U (en) * 1971-09-30 1973-06-09
JPS50159691A (en) * 1974-06-13 1975-12-24
JPS5183453A (en) * 1975-01-20 1976-07-22 Hitachi Electronics JIDORITOKUSEIGYOHOSHIKI

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