JPS5582535A - Automatic threshold value control circuit - Google Patents

Automatic threshold value control circuit

Info

Publication number
JPS5582535A
JPS5582535A JP15708278A JP15708278A JPS5582535A JP S5582535 A JPS5582535 A JP S5582535A JP 15708278 A JP15708278 A JP 15708278A JP 15708278 A JP15708278 A JP 15708278A JP S5582535 A JPS5582535 A JP S5582535A
Authority
JP
Japan
Prior art keywords
threshold value
signal
voltage
amplitude
fed
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
JP15708278A
Other languages
Japanese (ja)
Inventor
Masaru Nakamura
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
Tokyo Shibaura Electric Co Ltd
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, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15708278A priority Critical patent/JPS5582535A/en
Publication of JPS5582535A publication Critical patent/JPS5582535A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/01—Shaping pulses
    • H03K5/08—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding
    • H03K5/082—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding with an adaptive threshold

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Manipulation Of Pulses (AREA)

Abstract

PURPOSE:To improve the S/N as a whole, by fixedly giving the threshold value to the signal less than a given amplitude and giving variable the threshold value depending on the amplitude to the signal having more than a given amplitude. CONSTITUTION:The signal inputted to the buffer amplifier 1 is level-shifted with the DC voltage VB fed via the resistor 12 and fed to the operational amplifier 13. The amplifier 13 provides the peak detector consisting of the diode 2 and capacitor 3 at the output terminal and the peak value detected is fed back to the amplifier 13. Further, this peak value is divided with the divider consisting of the resistors 4,5 and fed to the comparator 6. Further, the input signal is level-shifted with the DC voltage VC fed via the resistor 15 and inputted to the comparator 6. The comparator 6 discriminates the input signal to the said threshold value and performs signal repeoduction. The voltage VC is set as the fixed threshold value when the signal amplitude is small and the voltage VB is as the voltage specifying the amplitude level performing variable measurement of threshold value.
JP15708278A 1978-12-19 1978-12-19 Automatic threshold value control circuit Pending JPS5582535A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15708278A JPS5582535A (en) 1978-12-19 1978-12-19 Automatic threshold value control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15708278A JPS5582535A (en) 1978-12-19 1978-12-19 Automatic threshold value control circuit

Publications (1)

Publication Number Publication Date
JPS5582535A true JPS5582535A (en) 1980-06-21

Family

ID=15641846

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15708278A Pending JPS5582535A (en) 1978-12-19 1978-12-19 Automatic threshold value control circuit

Country Status (1)

Country Link
JP (1) JPS5582535A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5884528A (en) * 1981-11-16 1983-05-20 Noboru Yamaguchi Digital signal wave shaping circuit
JPS6045530U (en) * 1983-09-05 1985-03-30 日本信号株式会社 Level judgment device
JPS643330U (en) * 1987-06-23 1989-01-10
CN107947782A (en) * 2017-11-28 2018-04-20 南京优倍电气有限公司 A kind of circuit for improving optocoupler transmission characteristic

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5884528A (en) * 1981-11-16 1983-05-20 Noboru Yamaguchi Digital signal wave shaping circuit
JPS6045530U (en) * 1983-09-05 1985-03-30 日本信号株式会社 Level judgment device
JPS643330U (en) * 1987-06-23 1989-01-10
CN107947782A (en) * 2017-11-28 2018-04-20 南京优倍电气有限公司 A kind of circuit for improving optocoupler transmission characteristic
CN107947782B (en) * 2017-11-28 2024-05-10 南京优倍电气技术有限公司 Circuit for improving transmission characteristics of optocoupler

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