FR2382131A1 - Amplification control coupling with transistor - has diode semiconductor in current-reflective circuit including voltage supply control - Google Patents

Amplification control coupling with transistor - has diode semiconductor in current-reflective circuit including voltage supply control

Info

Publication number
FR2382131A1
FR2382131A1 FR7805437A FR7805437A FR2382131A1 FR 2382131 A1 FR2382131 A1 FR 2382131A1 FR 7805437 A FR7805437 A FR 7805437A FR 7805437 A FR7805437 A FR 7805437A FR 2382131 A1 FR2382131 A1 FR 2382131A1
Authority
FR
France
Prior art keywords
transistor
current
amplification control
voltage supply
circuit including
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.)
Withdrawn
Application number
FR7805437A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of FR2382131A1 publication Critical patent/FR2382131A1/en
Withdrawn legal-status Critical Current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
    • H04M1/76—Compensating for differences in line impedance
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
  • Control Of Electrical Variables (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

The amplification control coupling utilises a current reflecting-circuit (CRC) and comprises a transistor (2) with a diode semi-conductor (1) (DSC). These two components are separately connected to a reference potential (M), and one of the connections inc a controllable voltage-supply (CVS). The CVS has a low internal resistance whereby variations in CRC current provoke a relative current modification fine amplification control obtains with exponential inflection obviated. The transistor (2) is active in the emissive circuit and its control path is mounted in parallel with the DSC (1). Electropost-amplifier, with the case and collector connected to the outlet and inlet resp. The emitter of the transistor is connected to a reference potential (M) of the two amplifiers.
FR7805437A 1977-02-24 1978-02-24 Amplification control coupling with transistor - has diode semiconductor in current-reflective circuit including voltage supply control Withdrawn FR2382131A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2707870A DE2707870C2 (en) 1977-02-24 1977-02-24 Circuit arrangement for gain control

Publications (1)

Publication Number Publication Date
FR2382131A1 true FR2382131A1 (en) 1978-09-22

Family

ID=6001999

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7805437A Withdrawn FR2382131A1 (en) 1977-02-24 1978-02-24 Amplification control coupling with transistor - has diode semiconductor in current-reflective circuit including voltage supply control

Country Status (8)

Country Link
BE (1) BE864142A (en)
DE (1) DE2707870C2 (en)
DK (1) DK82278A (en)
ES (1) ES467264A1 (en)
FR (1) FR2382131A1 (en)
IT (1) IT1094218B (en)
LU (1) LU79109A1 (en)
NL (1) NL7802048A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0029135A1 (en) * 1979-11-16 1981-05-27 Licentia Patent-Verwaltungs-GmbH Impedance circuit with adjustable resistance value
EP0063748A1 (en) * 1981-04-24 1982-11-03 Licentia Patent-Verwaltungs-GmbH Circuit arrangement for the generation of control magnitudes from the loop current
WO1983003176A1 (en) * 1982-03-04 1983-09-15 Blomley, Peter, Fred Waveform clipping circuits

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3002311A (en) * 1960-03-09 1961-10-03 James G Kyper Fishing lure
DE3235686A1 (en) * 1982-03-15 1983-09-22 Wilfred E. Zürich Schönmann Counterflow heat exchanger having a tiltable coil
DE3329665A1 (en) * 1983-08-17 1985-03-07 Telefunken electronic GmbH, 7100 Heilbronn CIRCUIT ARRANGEMENT FOR THE AMPLIFICATION OF ELECTRICAL SIGNALS
GB8702730D0 (en) * 1987-02-06 1987-03-11 Shaffer A E Weedless fish lure
US5195268A (en) * 1991-11-21 1993-03-23 Ellis Gregory T Weedless hook for lures
US5218778A (en) * 1992-05-28 1993-06-15 Szantor Alfons J Fishing lure
DE102004004862B4 (en) * 2004-01-30 2010-04-08 Infineon Technologies Ag Integrated semiconductor diode arrangement and integrated semiconductor device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1911547A1 (en) * 1969-03-07 1970-09-24 Blaupunkt Werke Gmbh Adjustable AC voltage amplifier
DE2402801A1 (en) * 1974-01-22 1975-07-24 Bosch Elektronik Gmbh Hearing aid transistor amplifier - has a monolithic integrated circuit differential amplifier with AGC
FR2290087A1 (en) * 1974-10-31 1976-05-28 Philips Nv SIGNAL LEVEL CONTROL AMPLIFIER

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2308835C3 (en) * 1972-03-02 1986-03-27 Sony Corp., Tokio/Tokyo Adjustable amplifier for electrical signals
US3873933A (en) * 1973-11-08 1975-03-25 Rca Corp Circuit with adjustable gain current mirror amplifier

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1911547A1 (en) * 1969-03-07 1970-09-24 Blaupunkt Werke Gmbh Adjustable AC voltage amplifier
DE2402801A1 (en) * 1974-01-22 1975-07-24 Bosch Elektronik Gmbh Hearing aid transistor amplifier - has a monolithic integrated circuit differential amplifier with AGC
FR2290087A1 (en) * 1974-10-31 1976-05-28 Philips Nv SIGNAL LEVEL CONTROL AMPLIFIER

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0029135A1 (en) * 1979-11-16 1981-05-27 Licentia Patent-Verwaltungs-GmbH Impedance circuit with adjustable resistance value
EP0063748A1 (en) * 1981-04-24 1982-11-03 Licentia Patent-Verwaltungs-GmbH Circuit arrangement for the generation of control magnitudes from the loop current
WO1983003176A1 (en) * 1982-03-04 1983-09-15 Blomley, Peter, Fred Waveform clipping circuits

Also Published As

Publication number Publication date
BE864142A (en) 1978-06-16
IT7820494A0 (en) 1978-02-21
DE2707870C2 (en) 1983-04-28
NL7802048A (en) 1978-08-28
IT1094218B (en) 1985-07-26
LU79109A1 (en) 1978-06-27
DK82278A (en) 1978-08-25
DE2707870A1 (en) 1978-08-31
ES467264A1 (en) 1980-02-01

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Legal Events

Date Code Title Description
RE Withdrawal of published application