FR2399644A1 - Input circuit for workpiece detectors - has transistor and Zener diode arrangement to receive inputs from assorted pick=ups - Google Patents

Input circuit for workpiece detectors - has transistor and Zener diode arrangement to receive inputs from assorted pick=ups

Info

Publication number
FR2399644A1
FR2399644A1 FR7724146A FR7724146A FR2399644A1 FR 2399644 A1 FR2399644 A1 FR 2399644A1 FR 7724146 A FR7724146 A FR 7724146A FR 7724146 A FR7724146 A FR 7724146A FR 2399644 A1 FR2399644 A1 FR 2399644A1
Authority
FR
France
Prior art keywords
transistor
pick
zener diode
ups
assorted
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
FR7724146A
Other languages
French (fr)
Other versions
FR2399644B1 (en
Inventor
Jean Andre Durand
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.)
Genoud et Cie SA
Original Assignee
Genoud et Cie SA
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 Genoud et Cie SA filed Critical Genoud et Cie SA
Priority to FR7724146A priority Critical patent/FR2399644A1/en
Publication of FR2399644A1 publication Critical patent/FR2399644A1/en
Application granted granted Critical
Publication of FR2399644B1 publication Critical patent/FR2399644B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/16—Modifications for eliminating interference voltages or currents
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
    • H03K17/795—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar transistors
    • H03K17/7955—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar transistors using phototransistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H03K17/95—Proximity switches using a magnetic detector
    • H03K17/9505—Constructional details

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Sorting Of Articles (AREA)

Abstract

The circuit provides a multi-input arrangement for the pick-ups used to detect the presence or absence of workpieces, or to measure their dimensions. It includes a transistor (T1) mounted in series with a diode (D1) forming part of a photocoupler (P) with a limiting resistor (R1). These are connected between DC voltage supply connections. Multiple inputs (E) are applied to the lines (e1...e4) which are connected to appropriate parts of the Zener diode circuit linked to the transistor. The various inputs are arranged to receive signals from most types of detectors currently available.
FR7724146A 1977-08-01 1977-08-01 Input circuit for workpiece detectors - has transistor and Zener diode arrangement to receive inputs from assorted pick=ups Granted FR2399644A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7724146A FR2399644A1 (en) 1977-08-01 1977-08-01 Input circuit for workpiece detectors - has transistor and Zener diode arrangement to receive inputs from assorted pick=ups

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7724146A FR2399644A1 (en) 1977-08-01 1977-08-01 Input circuit for workpiece detectors - has transistor and Zener diode arrangement to receive inputs from assorted pick=ups

Publications (2)

Publication Number Publication Date
FR2399644A1 true FR2399644A1 (en) 1979-03-02
FR2399644B1 FR2399644B1 (en) 1980-04-04

Family

ID=9194278

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7724146A Granted FR2399644A1 (en) 1977-08-01 1977-08-01 Input circuit for workpiece detectors - has transistor and Zener diode arrangement to receive inputs from assorted pick=ups

Country Status (1)

Country Link
FR (1) FR2399644A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2829634A1 (en) * 2001-09-12 2003-03-14 St Microelectronics Sa CURRENT LIMITING LOGIC INTERFACE CIRCUIT

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2829634A1 (en) * 2001-09-12 2003-03-14 St Microelectronics Sa CURRENT LIMITING LOGIC INTERFACE CIRCUIT
EP1294095A2 (en) * 2001-09-12 2003-03-19 STMicroelectronics S.A. Current limiting logic interface circuit
US7091633B2 (en) 2001-09-12 2006-08-15 Stmicroelectronics S.A. Current-limiting logic interface circuit
EP1294095A3 (en) * 2001-09-12 2007-12-05 STMicroelectronics S.A. Current limiting logic interface circuit

Also Published As

Publication number Publication date
FR2399644B1 (en) 1980-04-04

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse