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SG80093A1 - A differential output stage for electronic equipment providing a remote power feed to a terminal - Google Patents

A differential output stage for electronic equipment providing a remote power feed to a terminal

Info

Publication number
SG80093A1
SG80093A1 SG200001873A SG200001873A SG80093A1 SG 80093 A1 SG80093 A1 SG 80093A1 SG 200001873 A SG200001873 A SG 200001873A SG 200001873 A SG200001873 A SG 200001873A SG 80093 A1 SG80093 A1 SG 80093A1
Authority
SG
Singapore
Prior art keywords
route
voltage
current
terminal
output
Prior art date
Application number
SG200001873A
Inventor
Bouzidi Jean-Pierre
Original Assignee
Cit Alcatel
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 Cit Alcatel filed Critical Cit Alcatel
Publication of SG80093A1 publication Critical patent/SG80093A1/en

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/46—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC
    • G05F1/56—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
    • G05F1/565—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
    • 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
    • H03F3/45479—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection
    • 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
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3211—Modifications of amplifiers to reduce non-linear distortion in differential amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
    • H03F3/3081—Duplicated single-ended push-pull arrangements, i.e. bridge circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/135—Indexing scheme relating to amplifiers there being a feedback over one or more internal stages in the global amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/387—A circuit being added at the output of an amplifier to adapt the output impedance of the amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/411—Indexing scheme relating to amplifiers the output amplifying stage of an amplifier comprising two power stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45134—Indexing scheme relating to differential amplifiers the whole differential amplifier together with other coupled stages being fully differential realised

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Automation & Control Theory (AREA)
  • Amplifiers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Transmitters (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Selective Calling Equipment (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

The differential stage comprises two routes each connecting an input (Ea, Eb) to an output (Sa, Sb), each route comprising a first device (1a, 1b) for adding a feedback voltage from the other route to the input voltage of the considered route. There is a second device in the form of subtractor (2a, 2b) for providing the feedback voltage to the other route. Capacitors (C2a, C2b) provide a feedback voltage from the other route, so that the feedback voltage is a function only of the AC component of the outp voltage of the first device (1a, 1b). The first device also adds a DC voltage (VCA VCB) to the output voltage of that route. Each route includes a transistor (Ta, Tb) for adding a supplementary DC current to a current delivered by the first device that route at the output. There is also a low-pass filter (3a, 3b) and a stage amplifier (4a, 4b) for controlling the supplement current as a function of the DC component of the current delivered by the first device (1a, 1b). This annuls the DC component of that current. The output terminals (Sa, Sb) are connected by line (L) with resistances for matching and protection (Rsa, Rsb) to terminal (T) represented by a resistance (Rcc) and a capacitance (Cal) in series with an AC resistance (Ral).
SG200001873A 1999-04-08 2000-03-31 A differential output stage for electronic equipment providing a remote power feed to a terminal SG80093A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9904387A FR2792124B1 (en) 1999-04-08 1999-04-08 DIFFERENTIAL STAGE OF ELECTRONIC EQUIPMENT OUTPUT, WHICH ALLOWS TO POWER A TERMINAL

Publications (1)

Publication Number Publication Date
SG80093A1 true SG80093A1 (en) 2001-04-17

Family

ID=9544159

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200001873A SG80093A1 (en) 1999-04-08 2000-03-31 A differential output stage for electronic equipment providing a remote power feed to a terminal

Country Status (9)

Country Link
EP (1) EP1043832B1 (en)
KR (1) KR20010014698A (en)
AT (1) ATE385067T1 (en)
AU (1) AU2521100A (en)
CA (1) CA2300631A1 (en)
DE (1) DE60037847T2 (en)
FR (1) FR2792124B1 (en)
IL (1) IL135320A0 (en)
SG (1) SG80093A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4161693A (en) * 1977-03-09 1979-07-17 Airpax Electronics, Inc. Clamped input common mode rejection amplifier
US5345190A (en) * 1993-08-02 1994-09-06 Motorola, Inc. Modular low voltage filter with common mode feedback
EP0449200B1 (en) * 1990-03-29 1995-11-08 Alcatel Cit Differential output stage for electronic equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4161693A (en) * 1977-03-09 1979-07-17 Airpax Electronics, Inc. Clamped input common mode rejection amplifier
EP0449200B1 (en) * 1990-03-29 1995-11-08 Alcatel Cit Differential output stage for electronic equipment
US5345190A (en) * 1993-08-02 1994-09-06 Motorola, Inc. Modular low voltage filter with common mode feedback

Also Published As

Publication number Publication date
KR20010014698A (en) 2001-02-26
EP1043832B1 (en) 2008-01-23
FR2792124B1 (en) 2001-06-15
DE60037847T2 (en) 2009-01-22
EP1043832A1 (en) 2000-10-11
IL135320A0 (en) 2001-05-20
DE60037847D1 (en) 2008-03-13
FR2792124A1 (en) 2000-10-13
CA2300631A1 (en) 2000-10-08
AU2521100A (en) 2000-10-12
ATE385067T1 (en) 2008-02-15

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