JPS5582535A - Automatic threshold value control circuit - Google Patents
Automatic threshold value control circuitInfo
- 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
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.
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)
| 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 |
-
1978
- 1978-12-19 JP JP15708278A patent/JPS5582535A/en active Pending
Cited By (5)
| 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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