JPS5744814A - Waveform regulating circuit - Google Patents

Waveform regulating circuit

Info

Publication number
JPS5744814A
JPS5744814A JP12028480A JP12028480A JPS5744814A JP S5744814 A JPS5744814 A JP S5744814A JP 12028480 A JP12028480 A JP 12028480A JP 12028480 A JP12028480 A JP 12028480A JP S5744814 A JPS5744814 A JP S5744814A
Authority
JP
Japan
Prior art keywords
output
comparator
voltage
reference voltage
switched
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
JP12028480A
Other languages
Japanese (ja)
Inventor
Yukio Fuchinabe
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP12028480A priority Critical patent/JPS5744814A/en
Publication of JPS5744814A publication Critical patent/JPS5744814A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
    • G06K7/10851—Circuits for pulse shaping, amplifying, eliminating noise signals, checking the function of the sensing device

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Optical Transform (AREA)

Abstract

PURPOSE:To facilitate the regulation of the output of a sensor with a simple means by a method wherein the reference voltage of a comparator is switched between two levels and delaying and maintaining the state of the output. CONSTITUTION:The output V1 of a sensor and a reference voltage Vcc are applied to the (-) input terminal and the (+) input terminals, respectively, of a comparator 7. When the output voltage Vc of the comparator 7 exceeds a first reference voltage VPH with the increase of the output V1, the comparator 7 is switched on to generate an output pulse V2. Consequently, the output terminal of the comparator 7 becomes fanout free, namely, earth potential, so that an LED8 is lighted and the reference voltage is changed to a second reference voltage VPL. The voltage Vc will not change until the output V1 drops to the voltage VPL. When the output voltage V1 becomes smaller than the voltage VPL and the comparator 7 is switched off, the output terminal of the comparator 7 becomes high impedance. Consequently, the LED8 is switched off until the output V1 reach the voltage VPH. Thus the lighting period of the LED8 is extended to allow accurate level regulation.
JP12028480A 1980-08-31 1980-08-31 Waveform regulating circuit Pending JPS5744814A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12028480A JPS5744814A (en) 1980-08-31 1980-08-31 Waveform regulating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12028480A JPS5744814A (en) 1980-08-31 1980-08-31 Waveform regulating circuit

Publications (1)

Publication Number Publication Date
JPS5744814A true JPS5744814A (en) 1982-03-13

Family

ID=14782427

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12028480A Pending JPS5744814A (en) 1980-08-31 1980-08-31 Waveform regulating circuit

Country Status (1)

Country Link
JP (1) JPS5744814A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6116251A (en) * 1984-06-27 1986-01-24 マーレ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング Process piston comprising multiple parts for internal combustion engine
JPH0298628A (en) * 1988-10-05 1990-04-11 Mitsubishi Electric Corp Rotation angle detecting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6116251A (en) * 1984-06-27 1986-01-24 マーレ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング Process piston comprising multiple parts for internal combustion engine
JPH0298628A (en) * 1988-10-05 1990-04-11 Mitsubishi Electric Corp Rotation angle detecting device

Similar Documents

Publication Publication Date Title
JPS5744814A (en) Waveform regulating circuit
JPS56119520A (en) Primary low-pass filter
JPS57140029A (en) Output circuit
CA2144414A1 (en) Gas discharge device current control circuit
JPS5780826A (en) Waveform shaping circuit
JPS57207421A (en) Waveform shaping circuit
JPS5730412A (en) Voltage comparison circuit
KR960000214Y1 (en) B+ power time-delay circuit
JPS56135285A (en) White level tracking circuit
JPS55607A (en) Frequency discriminator
JPS5665508A (en) Current-voltage conversion circuit
JPS57204647A (en) Light receiving circuit
JPS6432517A (en) Time constant circuit
JPS5730908A (en) Capacity type displacement conversion device
JPS5784618A (en) One shot circuit
JPS57185706A (en) Oscillation circuit
JPS56137120A (en) Temperature detecting circuit
JPS55134505A (en) Crystal oscillating circuit
JPS5730413A (en) Schmitt trigger circuit
JPS5735416A (en) Input circuit
JPS6436106A (en) Phase modulation circuit
JPS5521605A (en) Constant current switching circuit
JPS54134545A (en) Pulse generator circuit
JPS5772007A (en) Method of indicating proper adjustment
JPS547557A (en) Constant current circuit