ES8600830A1 - Disposicion de circuito logico y de seguridad intrinseca - Google Patents

Disposicion de circuito logico y de seguridad intrinseca

Info

Publication number
ES8600830A1
ES8600830A1 ES536693A ES536693A ES8600830A1 ES 8600830 A1 ES8600830 A1 ES 8600830A1 ES 536693 A ES536693 A ES 536693A ES 536693 A ES536693 A ES 536693A ES 8600830 A1 ES8600830 A1 ES 8600830A1
Authority
ES
Spain
Prior art keywords
transistor
winding
capacitor
emitter
collector
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.)
Expired
Application number
ES536693A
Other languages
English (en)
Other versions
ES536693A0 (es
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.)
Jeumont Schneider SA
Original Assignee
Jeumont Schneider 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 Jeumont Schneider SA filed Critical Jeumont Schneider SA
Publication of ES8600830A1 publication Critical patent/ES8600830A1/es
Publication of ES536693A0 publication Critical patent/ES536693A0/es
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/007—Fail-safe circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Electronic Switches (AREA)
  • Dc-Dc Converters (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

DISPOSICION DE CIRCUITO LOGICO Y DE SEGURIDAD INTRINSECA, MEDIANTE EL CUAL NINGUNA ANOMALIA DE FUNCIONAMIENTO, CUALQUIERA QUE SEA, PUEDE ENTRAN/AR LA TRANSMISION DE UNA INFORMACION MENOS RESTRICTIVA QUE LA AUTORIZADA POR LAS CONDICIONES PRESENTES A LA ENTRADA DEL CIRCUITO.CONSTA DE TRES TRANSISTORES (1, 2, 3) DE TIPO NPN, DE LOS CUALES LAS BASES DE LOS DOS PRIMEROS (1, 2) CONSTITUYEN LAS DOS ENTRADAS DEL CIRCUITO, A LAS CUALES SE APLICAN IMPULSOS POSITIVOS; DE UN DIODO ZENER (4) QUE DETERMINA EN EL PUNTO (5) UNA TENSION DE REFERENCIA COMPRENDIDA ENTRE LA MASA Y LA TENSION CONTINUA POSITIVA ENTREGADA POR LA FUENTE DE TENSION; Y DE UN TRANSFORMADOR (12) CUYA RELACION DE TRANSFORMACION ES INFERIOR A LA UNIDAD.
ES536693A 1983-10-26 1984-10-11 Disposicion de circuito logico y de seguridad intrinseca Granted ES536693A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8317041A FR2554291B1 (fr) 1983-10-26 1983-10-26 Circuit logique " et " a securite intrinseque

Publications (2)

Publication Number Publication Date
ES8600830A1 true ES8600830A1 (es) 1985-10-16
ES536693A0 ES536693A0 (es) 1985-10-16

Family

ID=9293532

Family Applications (1)

Application Number Title Priority Date Filing Date
ES536693A Granted ES536693A0 (es) 1983-10-26 1984-10-11 Disposicion de circuito logico y de seguridad intrinseca

Country Status (9)

Country Link
US (1) US4636660A (es)
EP (1) EP0141716A1 (es)
AU (1) AU3414684A (es)
BR (1) BR8405348A (es)
CA (1) CA1213007A (es)
ES (1) ES536693A0 (es)
FR (1) FR2554291B1 (es)
PT (1) PT79314B (es)
ZA (1) ZA848322B (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6320406B1 (en) * 1999-10-04 2001-11-20 Texas Instruments Incorporated Methods and apparatus for a terminated fail-safe circuit
US7042251B2 (en) * 2004-04-28 2006-05-09 Seiko Epson Corporation Multi-function differential logic gate

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3254232A (en) * 1962-10-05 1966-05-31 Bell Telephone Labor Inc Mitigation of stray impedance effects in high frequency gating
DE1763149A1 (de) * 1968-04-10 1971-09-16 Licentia Gmbh Gatterschaltung einer gegen innere Fehler geschuetzten digital-binaeren Steuerung
US3600604A (en) * 1968-12-03 1971-08-17 Westinghouse Electric Corp Failsafe logic gates
US3684926A (en) * 1971-07-26 1972-08-15 La Salle Machine Tool Alternating current static control system
FR2147481A5 (es) * 1971-07-29 1973-03-09 Jeumont Schneider
US3909632A (en) * 1972-08-21 1975-09-30 Gen Signal Corp Fail-safe logic circuitry for vehicle transportation control
US4065683A (en) * 1974-06-12 1977-12-27 Square D Company Circuitry for industrial logic systems
US4125784A (en) * 1977-07-27 1978-11-14 Westinghouse Air Brake Company Fail-safe or gate

Also Published As

Publication number Publication date
FR2554291A1 (fr) 1985-05-03
ZA848322B (en) 1985-07-31
FR2554291B1 (fr) 1985-12-06
PT79314A (fr) 1984-11-01
EP0141716A1 (fr) 1985-05-15
AU3414684A (en) 1985-05-02
BR8405348A (pt) 1985-09-03
PT79314B (fr) 1986-08-19
ES536693A0 (es) 1985-10-16
US4636660A (en) 1987-01-13
CA1213007A (fr) 1986-10-21

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