CH550522A - Schaltungsanordnung fuer tuersprechanlagen mit selbsttaetiger, sprachgesteuerter gegensprech-verstaerkereinrichtung. - Google Patents

Schaltungsanordnung fuer tuersprechanlagen mit selbsttaetiger, sprachgesteuerter gegensprech-verstaerkereinrichtung.

Info

Publication number
CH550522A
CH550522A CH102973A CH102973A CH550522A CH 550522 A CH550522 A CH 550522A CH 102973 A CH102973 A CH 102973A CH 102973 A CH102973 A CH 102973A CH 550522 A CH550522 A CH 550522A
Authority
CH
Switzerland
Prior art keywords
intercom
voice
amplifier
independent
circuit arrangement
Prior art date
Application number
CH102973A
Other languages
German (de)
English (en)
Original Assignee
Siedle & Soehne S
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 Siedle & Soehne S filed Critical Siedle & Soehne S
Publication of CH550522A publication Critical patent/CH550522A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
    • H04M11/025—Door telephones

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
CH102973A 1972-03-07 1973-01-25 Schaltungsanordnung fuer tuersprechanlagen mit selbsttaetiger, sprachgesteuerter gegensprech-verstaerkereinrichtung. CH550522A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722210835 DE2210835C3 (de) 1972-03-07 1972-03-07 Schaltungsanordnung für Türsprechanlagen mit selbsttätigem, sprachgesteuertem Gegensprech- oder Semi-Duplex-Verstärker

Publications (1)

Publication Number Publication Date
CH550522A true CH550522A (de) 1974-06-14

Family

ID=5838113

Family Applications (1)

Application Number Title Priority Date Filing Date
CH102973A CH550522A (de) 1972-03-07 1973-01-25 Schaltungsanordnung fuer tuersprechanlagen mit selbsttaetiger, sprachgesteuerter gegensprech-verstaerkereinrichtung.

Country Status (5)

Country Link
CH (1) CH550522A (enExample)
DE (1) DE2210835C3 (enExample)
FR (1) FR2174856B3 (enExample)
NL (1) NL7303140A (enExample)
SE (1) SE401071B (enExample)

Also Published As

Publication number Publication date
NL7303140A (enExample) 1973-09-11
DE2210835C3 (de) 1978-08-03
FR2174856B3 (enExample) 1976-02-20
SE401071B (sv) 1978-04-17
FR2174856A1 (enExample) 1973-10-19
DE2210835A1 (de) 1973-09-20
DE2210835B2 (de) 1977-12-15

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Legal Events

Date Code Title Description
PL Patent ceased