FR573615A - Remote control of serial-coupled intermediate amplifiers - Google Patents

Remote control of serial-coupled intermediate amplifiers

Info

Publication number
FR573615A
FR573615A FR573615DA FR573615A FR 573615 A FR573615 A FR 573615A FR 573615D A FR573615D A FR 573615DA FR 573615 A FR573615 A FR 573615A
Authority
FR
France
Prior art keywords
serial
remote control
coupled intermediate
intermediate amplifiers
amplifiers
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 DES61218D external-priority patent/DE443847C/en
Priority claimed from DES62435D external-priority patent/DE446610C/en
Priority claimed from DES62871D external-priority patent/DE445612C/en
Priority claimed from DES63636D external-priority patent/DE448702C/en
Application filed by Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of FR573615A publication Critical patent/FR573615A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/40—Applications of speech amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
FR573615D 1922-10-31 1923-11-05 Remote control of serial-coupled intermediate amplifiers Expired FR573615A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DES61218D DE443847C (en) 1922-10-31 1922-10-31 Device for the remote control of series-connected intermediate amplifiers
DES62435D DE446610C (en) 1922-10-31 1923-03-24 Circuit arrangement for remote control of Zwischenverstaerkeraemtern by Rufstromstoesse
DES62871D DE445612C (en) 1923-05-14 1923-05-14 Circuit arrangement for remote control of Zwischenverstaerkeraemtern
DES63636D DE448702C (en) 1923-08-22 1923-08-22 Circuit arrangement for switching on and off line sections in call-through circuits for amplifiers

Publications (1)

Publication Number Publication Date
FR573615A true FR573615A (en) 1924-06-27

Family

ID=27437503

Family Applications (1)

Application Number Title Priority Date Filing Date
FR573615D Expired FR573615A (en) 1922-10-31 1923-11-05 Remote control of serial-coupled intermediate amplifiers

Country Status (3)

Country Link
AT (1) AT100616B (en)
CH (2) CH108823A (en)
FR (1) FR573615A (en)

Also Published As

Publication number Publication date
CH109034A (en) 1925-03-02
CH108823A (en) 1925-02-16
AT100616B (en) 1925-07-25

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