FR1579855A - - Google Patents

Info

Publication number
FR1579855A
FR1579855A FR1579855DA FR1579855A FR 1579855 A FR1579855 A FR 1579855A FR 1579855D A FR1579855D A FR 1579855DA FR 1579855 A FR1579855 A FR 1579855A
Authority
FR
France
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
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 filed Critical
Application granted granted Critical
Publication of FR1579855A publication Critical patent/FR1579855A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
    • H04Q5/02—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with direct connection for all subscribers, i.e. party-line systems
    • 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
FR1579855D 1967-09-11 1968-09-11 Expired FR1579855A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66684867A 1967-09-11 1967-09-11

Publications (1)

Publication Number Publication Date
FR1579855A true FR1579855A (fr) 1969-08-29

Family

ID=24675737

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1579855D Expired FR1579855A (fr) 1967-09-11 1968-09-11

Country Status (4)

Country Link
US (1) US3492488A (fr)
BE (1) BE720506A (fr)
FR (1) FR1579855A (fr)
NL (1) NL6812971A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5531635B1 (fr) * 1969-12-05 1980-08-19
US3638050A (en) * 1970-04-01 1972-01-25 Texas Instruments Inc Preamplification circuitry for photoconductive sensors
SE349694B (fr) * 1971-01-29 1972-10-02 S Persson
FR2139870B1 (fr) * 1971-05-29 1977-09-30 Ver Flugtechnische Werke
US3792205A (en) * 1971-06-01 1974-02-12 Communic Mfg Hand held telephone test instrument
US3867580A (en) * 1972-12-29 1975-02-18 Stromberg Carlson Corp Receiving circuits for digital signal distribution systems
US3826930A (en) * 1973-06-05 1974-07-30 Westinghouse Electric Corp Fail-safe optically coupled logic networks
GB1481166A (en) * 1973-07-12 1977-07-27 Hughes Micro Electronics Ltd Circuit arrangement for use in a transducer
US3886369A (en) * 1974-02-11 1975-05-27 Sippican Corp Solid-state gating circuit for cross-point switching

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716729A (en) * 1951-11-24 1955-08-30 Bell Telephone Labor Inc Transistor circuits with constant output current
US3235860A (en) * 1960-06-29 1966-02-15 American District Telegraph Co Fire detector
US3215845A (en) * 1961-05-17 1965-11-02 Gen Telephone & Elect Logic circuit
US3226553A (en) * 1961-07-24 1965-12-28 Ibm Photosensitive multiple state circuit for computing and data processing systems
DE1264513C2 (de) * 1963-11-29 1973-01-25 Texas Instruments Inc Bezugspotentialfreier gleichstromdifferenzverstaerker

Also Published As

Publication number Publication date
NL6812971A (fr) 1969-03-13
BE720506A (fr) 1969-02-17
US3492488A (en) 1970-01-27

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Legal Events

Date Code Title Description
ST Notification of lapse