ES400593A1 - Circuit for internal telephone appliances protected against interference. (Machine-translation by Google Translate, not legally binding) - Google Patents

Circuit for internal telephone appliances protected against interference. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES400593A1
ES400593A1 ES400593A ES400593A ES400593A1 ES 400593 A1 ES400593 A1 ES 400593A1 ES 400593 A ES400593 A ES 400593A ES 400593 A ES400593 A ES 400593A ES 400593 A1 ES400593 A1 ES 400593A1
Authority
ES
Spain
Prior art keywords
translation
circuit
machine
legally binding
google translate
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
ES400593A
Other languages
Spanish (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.)
Bassani SpA
Original Assignee
Bassani SpA
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 Bassani SpA filed Critical Bassani SpA
Publication of ES400593A1 publication Critical patent/ES400593A1/en
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
    • H04M1/68—Circuit arrangements for preventing eavesdropping

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Machine Translation (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

Circuit for internal telephony device protected against interference; characterized by the fact that on the line of the loudspeaker and on the return line were respective dispositions that prevent the passage of signals below the threshold voltage of the diodes themselves in order to prevent a third device from signals are received by interference in the conversation of two other devices. (Machine-translation by Google Translate, not legally binding)
ES400593A 1971-04-10 1972-03-09 Circuit for internal telephone appliances protected against interference. (Machine-translation by Google Translate, not legally binding) Expired ES400593A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2302371 1971-04-10

Publications (1)

Publication Number Publication Date
ES400593A1 true ES400593A1 (en) 1975-01-16

Family

ID=11202992

Family Applications (1)

Application Number Title Priority Date Filing Date
ES400593A Expired ES400593A1 (en) 1971-04-10 1972-03-09 Circuit for internal telephone appliances protected against interference. (Machine-translation by Google Translate, not legally binding)

Country Status (2)

Country Link
ES (1) ES400593A1 (en)
FR (1) FR2136296A5 (en)

Also Published As

Publication number Publication date
FR2136296A5 (en) 1972-12-22

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