GB803662A - A circuit for the simultaneous amplification of a frequency band and of a signal frequency outside the said band - Google Patents

A circuit for the simultaneous amplification of a frequency band and of a signal frequency outside the said band

Info

Publication number
GB803662A
GB803662A GB17937/55A GB1793755A GB803662A GB 803662 A GB803662 A GB 803662A GB 17937/55 A GB17937/55 A GB 17937/55A GB 1793755 A GB1793755 A GB 1793755A GB 803662 A GB803662 A GB 803662A
Authority
GB
United Kingdom
Prior art keywords
band
frequency
network
signal
signalling
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
GB17937/55A
Other languages
English (en)
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.)
Felten and Guilleaume Fernmeldeanlagen GmbH
Felten and Guilleaume AG
Original Assignee
Felten and Guilleaume Fernmeldeanlagen GmbH
Felten and Guilleaume 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
Application filed by Felten and Guilleaume Fernmeldeanlagen GmbH, Felten and Guilleaume AG filed Critical Felten and Guilleaume Fernmeldeanlagen GmbH
Publication of GB803662A publication Critical patent/GB803662A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/10—Control of transmission; Equalising by pilot signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/16—Arrangements for interconnection between switching centres in systems employing carrier frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
    • H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Networks Using Active Elements (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
GB17937/55A 1954-06-21 1955-06-21 A circuit for the simultaneous amplification of a frequency band and of a signal frequency outside the said band Expired GB803662A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE331705X 1954-06-21

Publications (1)

Publication Number Publication Date
GB803662A true GB803662A (en) 1958-10-29

Family

ID=6198638

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17937/55A Expired GB803662A (en) 1954-06-21 1955-06-21 A circuit for the simultaneous amplification of a frequency band and of a signal frequency outside the said band

Country Status (4)

Country Link
BE (1) BE539151A (de)
CH (1) CH331705A (de)
FR (1) FR1126293A (de)
GB (1) GB803662A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1048609B (de) * 1959-09-12 1959-01-15

Also Published As

Publication number Publication date
BE539151A (de)
FR1126293A (fr) 1956-11-19
CH331705A (de) 1958-07-31

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