JPS56115025A - Threshold level circuit - Google Patents

Threshold level circuit

Info

Publication number
JPS56115025A
JPS56115025A JP1876080A JP1876080A JPS56115025A JP S56115025 A JPS56115025 A JP S56115025A JP 1876080 A JP1876080 A JP 1876080A JP 1876080 A JP1876080 A JP 1876080A JP S56115025 A JPS56115025 A JP S56115025A
Authority
JP
Japan
Prior art keywords
circuit
amplifier
output
signal
threshold level
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
JP1876080A
Other languages
Japanese (ja)
Other versions
JPH0361369B2 (en
Inventor
Koichi Fukaya
Shigeo Nishitoba
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP1876080A priority Critical patent/JPS56115025A/en
Publication of JPS56115025A publication Critical patent/JPS56115025A/en
Publication of JPH0361369B2 publication Critical patent/JPH0361369B2/ja
Granted 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
    • H03K5/086—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding with an adaptive threshold generated by feedback

Landscapes

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

Abstract

PURPOSE:To vary the threshold level of a threshold circuit depending on the period of an input signal, by installing a threshold level compensating circuit at a part of a feedback circuit. CONSTITUTION:The signal of the signal source 11 is applied to the charging/discharging circuit 111, and the output of the circuit 111 is applied to the inverse amplifier 20. The output of the amplifier 20 is applied to the reverse amplifier 21. In case the signal period delivered from the source 11, the output of the amplifier 21 is differentiated by the differentiating circuit 113 with a time constant smaller than the signal period. The capacitor 15 is charged by the said differentiated output, and thus the charge of the capacitor 15 is discharged with an extremely short time constant. Accordingly this effect can be ignored to the input level of the amplifier 20, and thus the threshold level almost depending on the resistances 22, 12 and 13 is given to the input signal. When the signal period of the source 11 becomes short, the time constant of the circuit 113 approximates to the signal period. As a result, the circuit 113 loses the effect of differentiation to deliver the output of the amplifier 21 as it is. Thus the charging is accelerated for the capacitor 15, and as a result the threshold level becomes high when viewed from the source 11.
JP1876080A 1980-02-18 1980-02-18 Threshold level circuit Granted JPS56115025A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1876080A JPS56115025A (en) 1980-02-18 1980-02-18 Threshold level circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1876080A JPS56115025A (en) 1980-02-18 1980-02-18 Threshold level circuit

Publications (2)

Publication Number Publication Date
JPS56115025A true JPS56115025A (en) 1981-09-10
JPH0361369B2 JPH0361369B2 (en) 1991-09-19

Family

ID=11980591

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1876080A Granted JPS56115025A (en) 1980-02-18 1980-02-18 Threshold level circuit

Country Status (1)

Country Link
JP (1) JPS56115025A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH025609A (en) * 1988-06-24 1990-01-10 Kenwood Corp Circuit for correcting distortion of pulse width in optical transmission
TWI703274B (en) * 2018-03-29 2020-09-01 日商松屋精工所有限公司 Nut, nut manufacturing apparatus, and nut manufacturing method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4842755A (en) * 1971-09-30 1973-06-21

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4842755A (en) * 1971-09-30 1973-06-21

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH025609A (en) * 1988-06-24 1990-01-10 Kenwood Corp Circuit for correcting distortion of pulse width in optical transmission
TWI703274B (en) * 2018-03-29 2020-09-01 日商松屋精工所有限公司 Nut, nut manufacturing apparatus, and nut manufacturing method

Also Published As

Publication number Publication date
JPH0361369B2 (en) 1991-09-19

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