JPS6454803A - Measurement circuit for making x-ray ct device into ic - Google Patents

Measurement circuit for making x-ray ct device into ic

Info

Publication number
JPS6454803A
JPS6454803A JP62210111A JP21011187A JPS6454803A JP S6454803 A JPS6454803 A JP S6454803A JP 62210111 A JP62210111 A JP 62210111A JP 21011187 A JP21011187 A JP 21011187A JP S6454803 A JPS6454803 A JP S6454803A
Authority
JP
Japan
Prior art keywords
circuit
current
operational amplifier
ray
changing
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
JP62210111A
Other languages
Japanese (ja)
Inventor
Yasushi Takeda
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 JP62210111A priority Critical patent/JPS6454803A/en
Publication of JPS6454803A publication Critical patent/JPS6454803A/en
Pending legal-status Critical Current

Links

Landscapes

  • Amplifiers (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

PURPOSE:To use the titled device in both a pulse X-ray and a continuous X-ray systems, by changing a bias current by switching a resistor to set the bias current of an operational amplifier, and changing a frequency band area. CONSTITUTION:Figure shows the simplified equalization circuit of the operational amplifier made into an IC, and a differential amplifier at an initial stage is constituted of active elements Q4 and Q5, and it includes a phase compensating capacitor incorporating the operational amplifier. Also, at a current mirror circuit 200, a current equivalent to a reference current that flows on an active element Q3 and generated at a reference current setting current circuit 201 flows on active elements Q1 and Q2. In such a case, the bias current of the operational amplifier is changed by turning on and off a switch S1 by adding a resistor switching circuit 202 in parallel with the resistor RO of the reference current setting current circuit 201 and changing the resistance value of the 201, and the frequency band area is changed by changing the mutual conductance of the operational amplifier at the initial stage. In such a way, it is possible to prevent an IC internal circuit from being complicated, to respond to both the pulse X-ray and the continuous X-ray systems, and to increase the number of channels in a measurement circuit incorporated in the IC.
JP62210111A 1987-08-26 1987-08-26 Measurement circuit for making x-ray ct device into ic Pending JPS6454803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62210111A JPS6454803A (en) 1987-08-26 1987-08-26 Measurement circuit for making x-ray ct device into ic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62210111A JPS6454803A (en) 1987-08-26 1987-08-26 Measurement circuit for making x-ray ct device into ic

Publications (1)

Publication Number Publication Date
JPS6454803A true JPS6454803A (en) 1989-03-02

Family

ID=16583990

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62210111A Pending JPS6454803A (en) 1987-08-26 1987-08-26 Measurement circuit for making x-ray ct device into ic

Country Status (1)

Country Link
JP (1) JPS6454803A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0442009U (en) * 1990-08-07 1992-04-09
US6480178B1 (en) 1997-08-05 2002-11-12 Kabushiki Kaisha Toshiba Amplifier circuit and liquid-crystal display unit using the same
JP2006174011A (en) * 2004-12-15 2006-06-29 Matsushita Electric Ind Co Ltd High-frequency integrated circuit
JP2014107730A (en) * 2012-11-28 2014-06-09 Yamaha Corp Signal processing device and amplifier

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0442009U (en) * 1990-08-07 1992-04-09
US6480178B1 (en) 1997-08-05 2002-11-12 Kabushiki Kaisha Toshiba Amplifier circuit and liquid-crystal display unit using the same
US6664941B2 (en) 1997-08-05 2003-12-16 Kabushiki Kaisha Toshiba Amplifier circuit and liquid-crystal display unit using the same
JP2006174011A (en) * 2004-12-15 2006-06-29 Matsushita Electric Ind Co Ltd High-frequency integrated circuit
JP2014107730A (en) * 2012-11-28 2014-06-09 Yamaha Corp Signal processing device and amplifier
US9207255B2 (en) 2012-11-28 2015-12-08 Yamaha Corporation Signal processing device and amplifier

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