JPS57115016A - Comparator circuit of hysteresis level - Google Patents

Comparator circuit of hysteresis level

Info

Publication number
JPS57115016A
JPS57115016A JP56002364A JP236481A JPS57115016A JP S57115016 A JPS57115016 A JP S57115016A JP 56002364 A JP56002364 A JP 56002364A JP 236481 A JP236481 A JP 236481A JP S57115016 A JPS57115016 A JP S57115016A
Authority
JP
Japan
Prior art keywords
operational amplifier
input signal
reference potential
inverted
potential
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
JP56002364A
Other languages
Japanese (ja)
Inventor
Takao Yoshihara
Hidemasa Nakaoka
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 JP56002364A priority Critical patent/JPS57115016A/en
Publication of JPS57115016A publication Critical patent/JPS57115016A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/023—Generators characterised by the type of circuit or by the means used for producing pulses by the use of differential amplifiers or comparators, with internal or external positive feedback
    • H03K3/0233—Bistable circuits
    • H03K3/02337—Bistables with hysteresis, e.g. Schmitt trigger

Landscapes

  • Measurement Of Current Or Voltage (AREA)
  • Manipulation Of Pulses (AREA)

Abstract

PURPOSE:To change a hysteresis width in accordance with a reference potential, by providing comparators comparing an input signal with a reference potential, and comparing the input signal with a potential dividing the reference potential. CONSTITUTION:A reference potential VR is applied to a - input terminal of an operational amplifier 12, and a potential dividing the reference potential VR with resistors R6, R7 is applied to a + input terminal of an operational amplifier 13. When an input signal Vi becomes the reference potential VR, the operational amplifier 12 is inverted, and when the input signal Vi reaches VR.R7/ (R6+R7), the operational amplifier 13 is inverted. When values of resistors R9, R10, R11 are suitably selected and the operational amplifier 14 makes holding operation, the input signal Vi is increased and when it reaches the reference voltage VR, the operational amplifier 14 is inverted to output a negative voltage, and when the input signal Vi falls down to VR.R7/(R6+R7), the operational amplifier 14 outputs a positive voltage.
JP56002364A 1981-01-07 1981-01-07 Comparator circuit of hysteresis level Pending JPS57115016A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56002364A JPS57115016A (en) 1981-01-07 1981-01-07 Comparator circuit of hysteresis level

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56002364A JPS57115016A (en) 1981-01-07 1981-01-07 Comparator circuit of hysteresis level

Publications (1)

Publication Number Publication Date
JPS57115016A true JPS57115016A (en) 1982-07-17

Family

ID=11527198

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56002364A Pending JPS57115016A (en) 1981-01-07 1981-01-07 Comparator circuit of hysteresis level

Country Status (1)

Country Link
JP (1) JPS57115016A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6031309A (en) * 1983-07-30 1985-02-18 Sony Corp Relative level comparison circuit
JPS62292014A (en) * 1986-06-12 1987-12-18 Fujitsu Ltd Schmitt circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6031309A (en) * 1983-07-30 1985-02-18 Sony Corp Relative level comparison circuit
JPS62292014A (en) * 1986-06-12 1987-12-18 Fujitsu Ltd Schmitt circuit
JPH0453448B2 (en) * 1986-06-12 1992-08-26 Fujitsu Ltd

Similar Documents

Publication Publication Date Title
GB1532505A (en) Cusp detector
JPS57111116A (en) Comparator having hysteresis
JPS57115016A (en) Comparator circuit of hysteresis level
JPS55108019A (en) Reference voltage generator
JPS5612111A (en) Electric power supply unit of electric power amplifier
JPS57121308A (en) Power amplifier
JPS57154065A (en) Current voltage converter
FR2368844A1 (en) Telephone line supervisory unit - has bridge circuit and comparator to give two voltages according to open or closed condition of line
JPS5710462A (en) Current difference detection circuit
JPS6471317A (en) Threshold comparing circuit
JPS5514780A (en) Active filter
JPS57203296A (en) Sample holding circuit
JPS57154965A (en) Constant current source type filter having self-bias function
JPS554110A (en) Control system
JPS57207421A (en) Waveform shaping circuit
JPS57150222A (en) Binary signal converting circuit
JPS5587957A (en) Voltage detection circuit
JPS57207817A (en) Capacitive converter
JPS56160611A (en) Analog quantity indicator
JPS57206984A (en) Absolute value circuit
JPS5650468A (en) Absolute value circuit
JPS56141618A (en) Digital-to-analog connecting circuit
JPS57103429A (en) Deltam modulator and demodulator
JPS5451757A (en) Signal generator
JPS6454826A (en) Alarm circuit