GB1057634A - Circuit arrangements for the transmission of signals over an unbalanced circuit - Google Patents

Circuit arrangements for the transmission of signals over an unbalanced circuit

Info

Publication number
GB1057634A
GB1057634A GB3894363A GB3894363A GB1057634A GB 1057634 A GB1057634 A GB 1057634A GB 3894363 A GB3894363 A GB 3894363A GB 3894363 A GB3894363 A GB 3894363A GB 1057634 A GB1057634 A GB 1057634A
Authority
GB
United Kingdom
Prior art keywords
circuit
transmission
unbalanced
signals over
arrangements
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
GB3894363A
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.)
Robert Bosch Fernsehanlagen GmbH
Original Assignee
Fernseh GmbH
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 Fernseh GmbH filed Critical Fernseh GmbH
Publication of GB1057634A publication Critical patent/GB1057634A/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
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/56—Modifications of input or output impedances, not otherwise provided for
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/26—Push-pull amplifiers; Phase-splitters therefor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
    • H03F3/4508—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using bipolar transistors as the active amplifying circuit
    • H03F3/45098—PI types

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Networks Using Active Elements (AREA)
  • Amplifiers (AREA)

Abstract

1,057,634. Transistor amplifier circuits; prevention of interference. FERNSEH G.m.b.H Oct. 3, 1963 [Oct. 3, 1962], No. 38943/63. Headings H3T and H4R. An unbalanced line 1 has its conductors connected through capacitors (3, 4 or 33, 34) to respective amplifier elements (5, 6 or 35, 36) arranged in such a way that the output is proportional to the difference between the voltages on the conductors whereby in-phase voltages induced in the line are eliminated. In Figs. 2 (not shown) and 3 the output may be taken from either or both collectors of the transistors and a resistor 10 or 40 may be varied to vary the gain.
GB3894363A 1962-10-03 1963-10-03 Circuit arrangements for the transmission of signals over an unbalanced circuit Expired GB1057634A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF37948A DE1190052B (en) 1962-10-03 1962-10-03 Circuit arrangement for suppressing interference signals

Publications (1)

Publication Number Publication Date
GB1057634A true GB1057634A (en) 1967-02-01

Family

ID=7097137

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3894363A Expired GB1057634A (en) 1962-10-03 1963-10-03 Circuit arrangements for the transmission of signals over an unbalanced circuit

Country Status (2)

Country Link
DE (1) DE1190052B (en)
GB (1) GB1057634A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2425180A1 (en) * 1978-02-21 1979-11-30 Data 100 Corp SWITCHING CIRCUIT FOR COAXIAL CABLES

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3624763A1 (en) * 1986-07-22 1988-01-28 Beyer Eugen Low-noise single-stage transistor preamplifier
DE19755774A1 (en) * 1997-12-16 1999-06-17 Cit Alcatel Method and arrangement for suppressing interference signals in coaxial cables

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB443589A (en) * 1934-08-31 1936-03-02 Eric Lawrence Casling White Improvements in or relating to high-frequency electrical transmission systems
US2832846A (en) * 1955-04-28 1958-04-29 Rca Corp Phase-inverter complementary transistor amplifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2425180A1 (en) * 1978-02-21 1979-11-30 Data 100 Corp SWITCHING CIRCUIT FOR COAXIAL CABLES

Also Published As

Publication number Publication date
DE1190052B (en) 1965-04-01

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