FR2269787A1 - Relay for telephones controlled by opto-electronic coupler - has phototransistor with capacitor between collector and base and drive transistor - Google Patents

Relay for telephones controlled by opto-electronic coupler - has phototransistor with capacitor between collector and base and drive transistor

Info

Publication number
FR2269787A1
FR2269787A1 FR7513604A FR7513604A FR2269787A1 FR 2269787 A1 FR2269787 A1 FR 2269787A1 FR 7513604 A FR7513604 A FR 7513604A FR 7513604 A FR7513604 A FR 7513604A FR 2269787 A1 FR2269787 A1 FR 2269787A1
Authority
FR
France
Prior art keywords
collector
base
relay
phototransistor
capacitor
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
FR7513604A
Other languages
French (fr)
Other versions
FR2269787B3 (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.)
International Standard Electric Corp
Original Assignee
International Standard 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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2269787A1 publication Critical patent/FR2269787A1/en
Application granted granted Critical
Publication of FR2269787B3 publication Critical patent/FR2269787B3/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/24—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil having light-sensitive input
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/20—Repeater circuits; Relay circuits
    • H04L25/26—Circuits with optical sensing means, i.e. using opto-couplers for isolation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Electronic Switches (AREA)

Abstract

The switching component for the telephone installation is a relay with mercury contacts and the excitation of the relay is performed via the collector circuit of a transistor, while the light receiving element of the optoelectronic coupler is connected to the base circuit of the transistor. The light receiving element is a phototransistor unit with a capacitor which is connected between the base and the collector. The base emitter circuit of the phototransistor unit is shunted across the collector emitter circuit of another transistor controlled by a voltage corresponding to the requirements of the optoelectronic coupler.
FR7513604A 1974-05-03 1975-04-30 Relay for telephones controlled by opto-electronic coupler - has phototransistor with capacitor between collector and base and drive transistor Granted FR2269787A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742421558 DE2421558A1 (en) 1974-05-03 1974-05-03 RELAY SWITCHING, IN PARTICULAR FOR REMOTE INDICATION SYSTEMS

Publications (2)

Publication Number Publication Date
FR2269787A1 true FR2269787A1 (en) 1975-11-28
FR2269787B3 FR2269787B3 (en) 1978-11-17

Family

ID=5914627

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7513604A Granted FR2269787A1 (en) 1974-05-03 1975-04-30 Relay for telephones controlled by opto-electronic coupler - has phototransistor with capacitor between collector and base and drive transistor

Country Status (2)

Country Link
DE (1) DE2421558A1 (en)
FR (1) FR2269787A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2187981A1 (en) * 1972-06-03 1974-01-18 Riedl Ohg Adolf
EP0101643A2 (en) * 1982-08-16 1984-02-29 The Babcock & Wilcox Company Constant current sources for field contact inputs

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296449A (en) * 1979-08-27 1981-10-20 General Electric Company Relay switching apparatus
DE3340336A1 (en) * 1983-11-08 1985-05-15 Weiler, Rudolf, 2000 Hamburg Selective, dynamic interference-suppression module
NO168009C (en) * 1988-09-19 1994-06-21 Sverre Lillemo Electrical switchgear.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2187981A1 (en) * 1972-06-03 1974-01-18 Riedl Ohg Adolf
EP0101643A2 (en) * 1982-08-16 1984-02-29 The Babcock & Wilcox Company Constant current sources for field contact inputs
EP0101643A3 (en) * 1982-08-16 1984-11-07 The Babcock & Wilcox Company Constant current sources for field contact inputs

Also Published As

Publication number Publication date
DE2421558A1 (en) 1975-11-13
FR2269787B3 (en) 1978-11-17

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Legal Events

Date Code Title Description
ST Notification of lapse