FR787239A - Device for regulating telephone levels - Google Patents

Device for regulating telephone levels

Info

Publication number
FR787239A
FR787239A FR787239DA FR787239A FR 787239 A FR787239 A FR 787239A FR 787239D A FR787239D A FR 787239DA FR 787239 A FR787239 A FR 787239A
Authority
FR
France
Prior art keywords
telephone
regulating
levels
telephone levels
regulating 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.)
Societe Francaise Radio Electrique
Original Assignee
Societe Francaise Radio Electrique
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 Societe Francaise Radio Electrique filed Critical Societe Francaise Radio Electrique
Application granted granted Critical
Publication of FR787239A publication Critical patent/FR787239A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/22—Automatic control in amplifiers having discharge tubes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/06—Control of transmission; Equalising by the transmitted signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
FR787239D 1944-09-06 1934-06-14 Device for regulating telephone levels Expired FR787239A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR53753T 1944-09-06

Publications (1)

Publication Number Publication Date
FR787239A true FR787239A (en) 1935-09-19

Family

ID=8688240

Family Applications (2)

Application Number Title Priority Date Filing Date
FR787239D Expired FR787239A (en) 1944-09-06 1934-06-14 Device for regulating telephone levels
FR53753D Expired FR53753E (en) 1944-09-06 1944-09-06 Device for regulating telephone levels

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR53753D Expired FR53753E (en) 1944-09-06 1944-09-06 Device for regulating telephone levels

Country Status (1)

Country Link
FR (2) FR787239A (en)

Also Published As

Publication number Publication date
FR53753E (en) 1946-09-06

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