JPS6454803A - Measurement circuit for making x-ray ct device into ic - Google Patents
Measurement circuit for making x-ray ct device into icInfo
- 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
Links
- 238000005259 measurement Methods 0.000 title abstract 2
- 239000003990 capacitor Substances 0.000 abstract 1
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.
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)
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 |
-
1987
- 1987-08-26 JP JP62210111A patent/JPS6454803A/en active Pending
Cited By (6)
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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