JPS57132421A - Comparing circuit - Google Patents

Comparing circuit

Info

Publication number
JPS57132421A
JPS57132421A JP1848481A JP1848481A JPS57132421A JP S57132421 A JPS57132421 A JP S57132421A JP 1848481 A JP1848481 A JP 1848481A JP 1848481 A JP1848481 A JP 1848481A JP S57132421 A JPS57132421 A JP S57132421A
Authority
JP
Japan
Prior art keywords
signal
voltage
threshold level
terminal
small
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
JP1848481A
Other languages
Japanese (ja)
Inventor
Masamitsu Saito
Toshio Takei
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP1848481A priority Critical patent/JPS57132421A/en
Publication of JPS57132421A publication Critical patent/JPS57132421A/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 exactly shape a waveform of a small signal, even if a threshold level is made small in case when DC voltage is large when there is no signal, by applying the same voltage to both a signal terminal and a comparison terminal of a comparator, and setting a threshold level. CONSTITUTION:To both a signal terminal 2 and a comparison terminal 3 of a comparator 1, voltage is applied from the same voltage source. A forward direction electric power source Vd of a diode 11 is used as the same electric power source. As for the comparison terminal 3, voltage is applied through an ATC circuit 7, and as for a resistance for connecting the ATC circuit 7 and voltage -Vd, a variable resistance 9 is used for finely adjusting the potential difference between the signal terminal 2 and the comparison terminal 3, that is to say, a threshold level Vth. Also, the threshold level Vth is made to depend on said Vd only. According to such a constitution, even if the threshold level Vth is made small in case when DC voltage V is large when there is no signal in a signal line 4, the threshold level is stable enough, therefore, a waveform of a small signal is shaped.
JP1848481A 1981-02-10 1981-02-10 Comparing circuit Pending JPS57132421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1848481A JPS57132421A (en) 1981-02-10 1981-02-10 Comparing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1848481A JPS57132421A (en) 1981-02-10 1981-02-10 Comparing circuit

Publications (1)

Publication Number Publication Date
JPS57132421A true JPS57132421A (en) 1982-08-16

Family

ID=11972907

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1848481A Pending JPS57132421A (en) 1981-02-10 1981-02-10 Comparing circuit

Country Status (1)

Country Link
JP (1) JPS57132421A (en)

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