FR2356149A1 - Detecteur de seuil - Google Patents

Detecteur de seuil

Info

Publication number
FR2356149A1
FR2356149A1 FR7714602A FR7714602A FR2356149A1 FR 2356149 A1 FR2356149 A1 FR 2356149A1 FR 7714602 A FR7714602 A FR 7714602A FR 7714602 A FR7714602 A FR 7714602A FR 2356149 A1 FR2356149 A1 FR 2356149A1
Authority
FR
France
Prior art keywords
voltage
signal
threshold detector
passing
predetermined amplitude
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.)
Withdrawn
Application number
FR7714602A
Other languages
English (en)
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.)
CBS Corp
Original Assignee
Westinghouse 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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of FR2356149A1 publication Critical patent/FR2356149A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/12—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto
    • 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
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
    • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/286—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable
    • H03K3/2893—Bistables with hysteresis, e.g. Schmitt trigger
    • 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
    • H03K3/42—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Electronic Switches (AREA)
  • Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
  • Amplifiers (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

a. Détecteur de seuil. b. Caractérisé en ce qu'il comporte un limiteur de tension pour faire passer le courant créé par le signal de tension, suivant un premier chemin court-circuitant le premier moyen sensible à la tension aussi longtemps que le signal est inférieur à une amplitude prédéterminée, ce dispositif de limitation de tension devenant conducteur et faisant passer le courant créé par le signal de tension dans un second chemin vers le moyen sensible à la tension lorsque le signal correspondant au moins à l'amplitude prédéterminée.
FR7714602A 1976-06-21 1977-05-12 Detecteur de seuil Withdrawn FR2356149A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/698,253 US4086503A (en) 1976-06-21 1976-06-21 Control circuit initiating conduction of an opto-isolator unit

Publications (1)

Publication Number Publication Date
FR2356149A1 true FR2356149A1 (fr) 1978-01-20

Family

ID=24804512

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7714602A Withdrawn FR2356149A1 (fr) 1976-06-21 1977-05-12 Detecteur de seuil

Country Status (8)

Country Link
US (1) US4086503A (fr)
JP (1) JPS52156588A (fr)
CA (1) CA1089939A (fr)
DE (1) DE2727537A1 (fr)
FR (1) FR2356149A1 (fr)
GB (1) GB1556289A (fr)
IT (1) IT1080843B (fr)
NL (1) NL7705137A (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4177436A (en) * 1977-12-05 1979-12-04 Bell Telephone Laboratories, Incorporated Circuit for controlling the differential output power of a semiconductor laser
USRE31255E (en) * 1979-02-21 1983-05-24 Honeywell Inc. Light emitting and light detecting semiconductor device for interfacing with an optical fiber
US4216486A (en) * 1979-02-21 1980-08-05 Honeywell Inc. Light emitting and light detecting semiconductor device for interfacing with an optical fiber
US4319145A (en) * 1980-01-10 1982-03-09 Westinghouse Electric Corp. Control interface circuit
JPS57104325A (en) * 1980-12-20 1982-06-29 Fujitsu Ltd Ecl circuit
US4404473A (en) * 1981-12-17 1983-09-13 Westinghouse Electric Corp. Direct current power controller
US4507571A (en) * 1982-09-29 1985-03-26 Allen-Bradley Company Optically coupled input circuit for digital control
DE3302839A1 (de) * 1983-01-28 1984-08-02 Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar Turbomolekularpumpe mit induktivitaetsarmem gleichstrommotor, bremseinrichtung und verfahren zum betrieb derselben
US4980792A (en) * 1988-02-02 1990-12-25 National Semiconductor Corporation BiCMOS power transition circuit
JPH0528727Y2 (fr) * 1988-03-31 1993-07-23
US4943761A (en) * 1988-07-06 1990-07-24 Westinghouse Electric Corp. Current limited DC power controller
EP0520125B1 (fr) * 1991-06-27 1997-08-20 Consorzio per la Ricerca sulla Microelettronica nel Mezzogiorno - CoRiMMe Circuit de commutation pour connecter une première borne à une seconde ou troisième borne en fonction du potentiel de cette dernière, pour commander le potentiel de la région d'isolation d'un circuit intégré en fonction du potentiel du substrat
US5341038A (en) * 1992-01-27 1994-08-23 Cherry Semiconductor Corporation Error detector circuit for indication of low supply voltage
US5672919A (en) * 1995-03-24 1997-09-30 Abb Power T&D Company Inc. Low current binary input subsystem
US6038519A (en) * 1997-12-31 2000-03-14 Sloan Valve Company Control board for controlling and monitoring usage of water
NZ582210A (en) * 2003-02-13 2011-04-29 Pfizer Prod Inc Uses of anti-insulin-like growth factor I receptor antibodies
US7180098B2 (en) * 2004-04-05 2007-02-20 Legerity, Inc. Optical isolator device, and method of making same
JP2016025617A (ja) * 2014-07-24 2016-02-08 矢崎総業株式会社 シュミットトリガ回路及び電源監視装置
US10158358B2 (en) * 2015-04-06 2018-12-18 Rockwell Automation Technologies, Inc. Low-power dissipation input circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1188132B (de) * 1963-12-05 1965-03-04 Siemens Ag Kippschaltungsanordnung nach dem Schmitt-Trigger-Prinzip
FR2267662A1 (fr) * 1974-04-11 1975-11-07 Rca Corp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1188132B (de) * 1963-12-05 1965-03-04 Siemens Ag Kippschaltungsanordnung nach dem Schmitt-Trigger-Prinzip
FR2267662A1 (fr) * 1974-04-11 1975-11-07 Rca Corp

Also Published As

Publication number Publication date
CA1089939A (fr) 1980-11-18
DE2727537A1 (de) 1977-12-29
JPS5649463B2 (fr) 1981-11-21
GB1556289A (en) 1979-11-21
NL7705137A (nl) 1977-12-23
IT1080843B (it) 1985-05-16
US4086503A (en) 1978-04-25
JPS52156588A (en) 1977-12-27

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Legal Events

Date Code Title Description
ST Notification of lapse