DE1791025C3 - Veränderbare, elektrische Impedanz - Google Patents

Veränderbare, elektrische Impedanz

Info

Publication number
DE1791025C3
DE1791025C3 DE1791025A DE1791025A DE1791025C3 DE 1791025 C3 DE1791025 C3 DE 1791025C3 DE 1791025 A DE1791025 A DE 1791025A DE 1791025 A DE1791025 A DE 1791025A DE 1791025 C3 DE1791025 C3 DE 1791025C3
Authority
DE
Germany
Prior art keywords
impedance
transistor
output
circuit
amplifier
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
DE1791025A
Other languages
German (de)
English (en)
Other versions
DE1791025B2 (de
DE1791025A1 (de
Inventor
William George Raleigh N.C. Crouse (V.St.A.)
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of DE1791025A1 publication Critical patent/DE1791025A1/de
Publication of DE1791025B2 publication Critical patent/DE1791025B2/de
Application granted granted Critical
Publication of DE1791025C3 publication Critical patent/DE1791025C3/de
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • 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
    • G05F1/613—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in parallel with the load as final control devices
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers specially adapted therefor
    • G06G7/16—Arrangements for performing computing operations, e.g. operational amplifiers specially adapted therefor for multiplication or division
    • G06G7/163—Arrangements for performing computing operations, e.g. operational amplifiers specially adapted therefor for multiplication or division using a variable impedance controlled by one of the input signals, variable amplification or transfer function
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/36—Amplitude modulation by means of semiconductor device having at least three electrodes
    • 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
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H03G5/24—Automatic control in frequency-selective amplifiers
    • H03G5/28—Automatic control in frequency-selective amplifiers having semiconductor devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/14—Control of transmission; Equalising characterised by the equalising network used
    • H04B3/146—Control of transmission; Equalising characterised by the equalising network used using phase-frequency equalisers
    • H04B3/148—Control of transmission; Equalising characterised by the equalising network used using phase-frequency equalisers variable equalisers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Electromagnetism (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Networks Using Active Elements (AREA)
  • Amplifiers (AREA)
DE1791025A 1967-09-01 1968-08-29 Veränderbare, elektrische Impedanz Expired DE1791025C3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66507467A 1967-09-01 1967-09-01

Publications (3)

Publication Number Publication Date
DE1791025A1 DE1791025A1 (de) 1971-10-21
DE1791025B2 DE1791025B2 (de) 1977-10-20
DE1791025C3 true DE1791025C3 (de) 1978-06-08

Family

ID=24668606

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1791025A Expired DE1791025C3 (de) 1967-09-01 1968-08-29 Veränderbare, elektrische Impedanz

Country Status (10)

Country Link
US (1) US3539826A (OSRAM)
JP (1) JPS5345665B1 (OSRAM)
BE (1) BE719482A (OSRAM)
CH (1) CH474913A (OSRAM)
DE (1) DE1791025C3 (OSRAM)
ES (1) ES356988A1 (OSRAM)
FR (1) FR1577135A (OSRAM)
GB (1) GB1236994A (OSRAM)
NL (1) NL159834B (OSRAM)
SE (1) SE353425B (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3323649C2 (de) 1983-07-01 1987-04-02 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung zur Erhöhung der Induktivität einer Spule

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3904971A (en) * 1971-09-29 1975-09-09 Us Navy Automatic gain control amplifier circuit
JPS5344100B2 (OSRAM) * 1972-10-31 1978-11-25
JPS5947495B2 (ja) * 1975-04-04 1984-11-19 株式会社日立製作所 可変インピ−ダンス回路
GB1573616A (en) * 1976-03-04 1980-08-28 Nat Semiconductor Uk Ltd Electronic impedance devices
DE2655320C3 (de) * 1976-12-07 1987-02-12 Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg Steuerbarer elektronischer Widerstand
US4155059A (en) * 1977-06-14 1979-05-15 Nobuo Doi Circuit network showing proper equivalent impedance between two network terminals
US4339677A (en) * 1979-12-21 1982-07-13 Signetics Corporation Electrically variable impedance circuit with feedback compensation
DE3124231A1 (de) * 1981-06-20 1982-12-30 M.K. Juchheim GmbH & Co, 6400 Fulda Anordnung zur darstellung eines variablen elektrischen praezisionswiderstandes
DE3323651A1 (de) * 1983-07-01 1985-01-17 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung zur erhoehung der querinduktivitaet eines uebertragers
US5623228A (en) * 1993-05-17 1997-04-22 Dan Inbar Non-linear feedback network providing a linear transfer function
US5978024A (en) * 1994-04-15 1999-11-02 Lg Semicon Co., Ltd. Auto variable anti-blooming bias control circuit and method
US6806767B2 (en) * 2002-07-09 2004-10-19 Anadigics, Inc. Power amplifier with load switching circuit
US9754717B2 (en) 2012-05-11 2017-09-05 Momentum Dynamics Corporation Method of and apparatus for generating an adjustable reactance
US9184709B2 (en) * 2013-10-08 2015-11-10 Peregrine Semiconductor Corporation Resonant pre-driver for switching amplifier

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3233177A (en) * 1962-09-17 1966-02-01 Tracor Radio frequency receiver gain control system with constant input impedance
US3412340A (en) * 1966-03-03 1968-11-19 Bendix Corp Variable attenuation circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3323649C2 (de) 1983-07-01 1987-04-02 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung zur Erhöhung der Induktivität einer Spule

Also Published As

Publication number Publication date
SE353425B (OSRAM) 1973-01-29
NL6812207A (OSRAM) 1969-03-04
JPS5345665B1 (OSRAM) 1978-12-08
US3539826A (en) 1970-11-10
CH474913A (de) 1969-06-30
BE719482A (OSRAM) 1969-01-16
GB1236994A (en) 1971-06-23
ES356988A1 (es) 1970-05-01
DE1791025B2 (de) 1977-10-20
FR1577135A (OSRAM) 1969-08-01
DE1791025A1 (de) 1971-10-21
NL159834B (nl) 1979-03-15

Similar Documents

Publication Publication Date Title
DE2211347C3 (de) Schaltungsanordnung zur Veränderung des dynamischen Bereiches von Signalen
DE2427592A1 (de) Oszillatorschaltung
DE2262089B2 (de) Schaltungsanordnung zur elektronischen Frequenzbeeinflussung, insbesondere elektronischer Klangeinsteller
DE1791025B2 (de) Veraenderbare, elektrische impedanz
DE3016092C2 (OSRAM)
DE1616885B1 (de) Schaltungsanordnung,die auf ein ihr zugefuehrtes frequenzmoduliertes Eingangssignal hin eine Ausgangsspannung abgibt,deren Amplitude von der Frequenz des Eingangssignals abhaengt
DE2401816A1 (de) Schaltungsanordnung zur stoergeraeuschverminderung
DE1275137B (de) Entzerrerschaltung
DE2817034C2 (de) Elektronischer Gleichstromtelegraphiesender
DE3751078T2 (de) Quartz-Oszillator mit breitem Ziehbereich.
DE1139553B (de) Breitbandiger Frequenzteiler
DE1144328B (de) Verfahren zum Phasen und Frequenzvergleich unter Verwendung einer Schaltung mit zwei Gleichnchterstrecken
DE1957171B2 (de) Hochspannungs-hochfrequenzgenerator in festkoerperbauart
DE2647569C3 (de) Impulsgenerator mit umschaltbarer Ausgangsfrequenz
DE2623398C2 (de) Sinusoszillator mit veränderbarer Frequenz aus einer Transistor-Verstärkerschaltung
DE1277907C2 (de) Transistorschaltungsanordnung zur umwandlung einer rechteckschwingung in eine sinusschwingung
DE2655320A1 (de) Steuerbarer elektronischer widerstand
EP1067473A1 (de) Integrator
DE3940295C2 (de) Mobilfunkgerät und Hochfrequenzsender mit geregelter Ausgangsleistung
DE2317253A1 (de) Eimerkettenschaltung
DE2711520C3 (de) Belastungsschaltung für eine Signalquelle
DE2803610C2 (de) Frequenzvervielfacher mit einer Step- Recovery-Diode
DE2614361C2 (de) Elektronische Abstimmeinrichtung
DE102018116597A1 (de) Schaltung zum schalten einer wechselspannung
DE2025093C3 (de) Frequenzumschaltbarer Oszillator

Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
8339 Ceased/non-payment of the annual fee