FR608740A - Amplifier coupling for telephone systems - Google Patents

Amplifier coupling for telephone systems

Info

Publication number
FR608740A
FR608740A FR608740DA FR608740A FR 608740 A FR608740 A FR 608740A FR 608740D A FR608740D A FR 608740DA FR 608740 A FR608740 A FR 608740A
Authority
FR
France
Prior art keywords
telephone systems
amplifier coupling
amplifier
coupling
telephone
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
Other languages
French (fr)
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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
Priority claimed from DES68199D external-priority patent/DE466762C/en
Application filed by Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of FR608740A publication Critical patent/FR608740A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
FR608740D 1924-12-24 1925-12-19 Amplifier coupling for telephone systems Expired FR608740A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DES68199D DE466762C (en) 1924-12-24 1924-12-24 Amplifier circuit for telephone systems with feedback or echo cancellers
DE608740X 1925-09-15

Publications (1)

Publication Number Publication Date
FR608740A true FR608740A (en) 1926-08-02

Family

ID=28042734

Family Applications (1)

Application Number Title Priority Date Filing Date
FR608740D Expired FR608740A (en) 1924-12-24 1925-12-19 Amplifier coupling for telephone systems

Country Status (2)

Country Link
AT (1) AT105472B (en)
FR (1) FR608740A (en)

Also Published As

Publication number Publication date
AT105472B (en) 1927-02-10

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