DE2115670A1 - - Google Patents

Info

Publication number
DE2115670A1
DE2115670A1 DE19712115670 DE2115670A DE2115670A1 DE 2115670 A1 DE2115670 A1 DE 2115670A1 DE 19712115670 DE19712115670 DE 19712115670 DE 2115670 A DE2115670 A DE 2115670A DE 2115670 A1 DE2115670 A1 DE 2115670A1
Authority
DE
Germany
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
DE19712115670
Other languages
German (de)
Other versions
DE2115670C2 (de
DE2115670B2 (de
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
Priority to DE19712115670 priority Critical patent/DE2115670C2/de
Priority to CH328772A priority patent/CH543202A/de
Priority to AT201772A priority patent/AT320039B/de
Priority to GB1172372A priority patent/GB1348476A/en
Priority to NL7203908A priority patent/NL7203908A/xx
Priority to IT2247672A priority patent/IT950824B/it
Priority to LU65062D priority patent/LU65062A1/xx
Priority to SE417572A priority patent/SE366449B/xx
Priority to FR7211020A priority patent/FR2132175B1/fr
Priority to BE781592A priority patent/BE781592A/xx
Publication of DE2115670A1 publication Critical patent/DE2115670A1/de
Publication of DE2115670B2 publication Critical patent/DE2115670B2/de
Application granted granted Critical
Publication of DE2115670C2 publication Critical patent/DE2115670C2/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults
    • H04M1/745—Protection devices or circuits for voltages surges on the line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
DE19712115670 1971-03-31 1971-03-31 Schaltungsanordnung für Fernsprechstationen mit überspannungsgeschützten und polungsunabhängigen Mikrofonverstärkern in integrierter monolithischer Technik Expired DE2115670C2 (de)

Priority Applications (10)

Application Number Priority Date Filing Date Title
DE19712115670 DE2115670C2 (de) 1971-03-31 1971-03-31 Schaltungsanordnung für Fernsprechstationen mit überspannungsgeschützten und polungsunabhängigen Mikrofonverstärkern in integrierter monolithischer Technik
CH328772A CH543202A (de) 1971-03-31 1972-03-07 Schaltungsanordnung in einer Fernsprechstation, welche Anordnung einen überspannungsgeschützten und polungsunabhängig gespeisten Mikrofonverstärker in integrierter monolithischer Technik aufweist
AT201772A AT320039B (de) 1971-03-31 1972-03-10 Schaltungsanordnung für Fernsprechstationen mit überspannungsgeschützten und polungsunabhängigen Mikrophonverstärkern in integrierter monolithischer Technik
GB1172372A GB1348476A (en) 1971-03-31 1972-03-14 Telephone subscriberstation circuit arrangements
NL7203908A NL7203908A (OSRAM) 1971-03-31 1972-03-23
IT2247672A IT950824B (it) 1971-03-31 1972-03-28 Disposizione circuitale per proteg gere dispositivi alimentati con corrente continua tramite linee di allacciamento in impianti di tele comunicazioni specie in impianti telefonici
LU65062D LU65062A1 (OSRAM) 1971-03-31 1972-03-29
SE417572A SE366449B (OSRAM) 1971-03-31 1972-03-29
FR7211020A FR2132175B1 (OSRAM) 1971-03-31 1972-03-29
BE781592A BE781592A (fr) 1971-03-31 1972-03-31 Montage pour la protection de dispositifs alimentes en courant continu par des lignes de raccordement, dans des installations de telecommunications

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712115670 DE2115670C2 (de) 1971-03-31 1971-03-31 Schaltungsanordnung für Fernsprechstationen mit überspannungsgeschützten und polungsunabhängigen Mikrofonverstärkern in integrierter monolithischer Technik

Publications (3)

Publication Number Publication Date
DE2115670A1 true DE2115670A1 (OSRAM) 1972-06-29
DE2115670B2 DE2115670B2 (de) 1972-06-29
DE2115670C2 DE2115670C2 (de) 1981-06-04

Family

ID=5803435

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712115670 Expired DE2115670C2 (de) 1971-03-31 1971-03-31 Schaltungsanordnung für Fernsprechstationen mit überspannungsgeschützten und polungsunabhängigen Mikrofonverstärkern in integrierter monolithischer Technik

Country Status (2)

Country Link
AT (1) AT320039B (OSRAM)
DE (1) DE2115670C2 (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2730378A1 (de) * 1976-07-07 1978-01-12 Ortho Pharma Corp Verfahren zur isolierung von uteroevakuierenden substanzen aus pflanzenextrakten

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3538088C2 (de) * 1985-10-25 1993-11-11 Siemens Ag Schaltungsanordnung für einen Überspannungsschutz in elektronischen Fernsprechstationen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1815174B2 (OSRAM) * 1968-12-17 1970-10-29

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1815174B2 (OSRAM) * 1968-12-17 1970-10-29

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
DE-Z: Elektronik, 1959, Nr. 10, S. 319 *
DE-Z: Scientia Electrica, 1963, H. 6, S. 67 bis 91 *
INTERMETALL "Schaltbeispiele", Ausg. 1967, S. 3 *
INTERMETALL-Schaltung 10, Ausg. 1063/6 *
Rumpf, K.H.: Elektronik in der Fernsprechver- mittlungstechnik, 1956, S. 102 u. 103 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2730378A1 (de) * 1976-07-07 1978-01-12 Ortho Pharma Corp Verfahren zur isolierung von uteroevakuierenden substanzen aus pflanzenextrakten

Also Published As

Publication number Publication date
DE2115670C2 (de) 1981-06-04
AT320039B (de) 1975-01-27
DE2115670B2 (de) 1972-06-29

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee