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JPS57202698A - Electrical current supply device for x-ray emitting filament - Google Patents

Electrical current supply device for x-ray emitting filament

Info

Publication number
JPS57202698A
JPS57202698A JP8763481A JP8763481A JPS57202698A JP S57202698 A JPS57202698 A JP S57202698A JP 8763481 A JP8763481 A JP 8763481A JP 8763481 A JP8763481 A JP 8763481A JP S57202698 A JPS57202698 A JP S57202698A
Authority
JP
Japan
Prior art keywords
voltage
control
circuit
filament
current
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.)
Granted
Application number
JP8763481A
Other languages
Japanese (ja)
Other versions
JPH0155560B2 (en
Inventor
Masayoshi Suzuki
Hirobumi Hino
Kazuo Kaneko
Kiichi Tokunaga
Keizo Inagaki
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 JP8763481A priority Critical patent/JPS57202698A/en
Publication of JPS57202698A publication Critical patent/JPS57202698A/en
Publication of JPH0155560B2 publication Critical patent/JPH0155560B2/ja
Granted 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
    • H05G1/34—Anode current, heater current or heater voltage of X-ray tube

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • X-Ray Techniques (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To make it easy to render an electrical current supply device compact and take contermeasures against abnormalities, by changing an AC voltage into a DC output, turnin on and off the DC output to obtain a control voltage, converting the control voltage into an AC voltage to heat an X-ray emitting filament and feeding a signal corresponding to the current of the filament, back to a turn-on/off circuit. CONSTITUTION:The voltage of an AC power source 1 is changed into a DC voltge by a rectifier circuit 2 and a capacitor 3. The voltage across the capacitor 3 is turned on and off by a transistor 4 while the switching frequency and the turn-on period are regulated by a control circuit 28. As a result, a DC voltge Vc2 is obtained. The voltage Vc2 is converted into an AC voltage by transistors 5a, 5b. The AC voltage is applied to heat the filament 7a of an X-ray tube 7 through a heating transformer 6 and a rectifier circuit 25. The voltage across a resistor 24 is fed back as a signal corresponding to the current of the tube 7, to the control circuit 28 and is comprared with a reference signal Vpat1 to control the current of the tube to a prescribed level. According to this constitution, the loss in the transistor 4 is made very low. An abnormality detection circuit 30 is provided to quicken the response for protection.
JP8763481A 1981-06-08 1981-06-08 Electrical current supply device for x-ray emitting filament Granted JPS57202698A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8763481A JPS57202698A (en) 1981-06-08 1981-06-08 Electrical current supply device for x-ray emitting filament

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8763481A JPS57202698A (en) 1981-06-08 1981-06-08 Electrical current supply device for x-ray emitting filament

Publications (2)

Publication Number Publication Date
JPS57202698A true JPS57202698A (en) 1982-12-11
JPH0155560B2 JPH0155560B2 (en) 1989-11-24

Family

ID=13920402

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8763481A Granted JPS57202698A (en) 1981-06-08 1981-06-08 Electrical current supply device for x-ray emitting filament

Country Status (1)

Country Link
JP (1) JPS57202698A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6399800U (en) * 1986-12-19 1988-06-28
JPH0240898A (en) * 1988-07-29 1990-02-09 Shimadzu Corp X-ray tube filament heating apparatus
EP3229562A3 (en) * 2016-04-05 2018-03-07 General Electric Company X-ray systems having individually measurable emitters

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5117468U (en) * 1974-07-25 1976-02-07
JPS54122993A (en) * 1978-03-17 1979-09-22 Toshiba Corp Filament heater
JPS55124998A (en) * 1979-03-22 1980-09-26 Toshiba Corp X-ray tube filament heater

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5117468U (en) * 1974-07-25 1976-02-07
JPS54122993A (en) * 1978-03-17 1979-09-22 Toshiba Corp Filament heater
JPS55124998A (en) * 1979-03-22 1980-09-26 Toshiba Corp X-ray tube filament heater

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6399800U (en) * 1986-12-19 1988-06-28
JPH0240898A (en) * 1988-07-29 1990-02-09 Shimadzu Corp X-ray tube filament heating apparatus
EP3229562A3 (en) * 2016-04-05 2018-03-07 General Electric Company X-ray systems having individually measurable emitters
US10165663B2 (en) 2016-04-05 2018-12-25 General Electric Company X-ray systems having individually measurable emitters

Also Published As

Publication number Publication date
JPH0155560B2 (en) 1989-11-24

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