JPS5489551A - Circuit for responding to frequency by varying according to dc control voltage - Google Patents

Circuit for responding to frequency by varying according to dc control voltage

Info

Publication number
JPS5489551A
JPS5489551A JP15382478A JP15382478A JPS5489551A JP S5489551 A JPS5489551 A JP S5489551A JP 15382478 A JP15382478 A JP 15382478A JP 15382478 A JP15382478 A JP 15382478A JP S5489551 A JPS5489551 A JP S5489551A
Authority
JP
Japan
Prior art keywords
responding
frequency
circuit
control voltage
varying according
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.)
Pending
Application number
JP15382478A
Other languages
Japanese (ja)
Inventor
Ashieruman Birufuriito
Yonkun Geruharuto
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of JPS5489551A publication Critical patent/JPS5489551A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H03G1/0023—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 in emitter-coupled or cascode amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/12—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices
    • H03G9/14—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices for gain control and tone control
    • H03G9/16—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices for gain control and tone control incorporating negative feedback

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Networks Using Active Elements (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Amplifiers (AREA)
JP15382478A 1977-12-15 1978-12-14 Circuit for responding to frequency by varying according to dc control voltage Pending JPS5489551A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772755827 DE2755827A1 (en) 1977-12-15 1977-12-15 CIRCUIT ARRANGEMENT WITH A FREQUENCY RESPONSE THAT CAN BE CHANGED BY A CONTROL VOLTAGE

Publications (1)

Publication Number Publication Date
JPS5489551A true JPS5489551A (en) 1979-07-16

Family

ID=6026151

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15382478A Pending JPS5489551A (en) 1977-12-15 1978-12-14 Circuit for responding to frequency by varying according to dc control voltage

Country Status (5)

Country Link
JP (1) JPS5489551A (en)
AT (1) AT376078B (en)
DE (1) DE2755827A1 (en)
FR (1) FR2412200A1 (en)
GB (1) GB2010616B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2465369A1 (en) * 1979-09-13 1981-03-20 Thomson Csf Mixer circuit for volume and tone control circuit - has two parallel connected differential amplifiers responsive to three control signals and providing increased signal=to=noise ratio
DE3026551A1 (en) * 1980-07-12 1982-02-04 Philips Patentverwaltung Gmbh, 2000 Hamburg AMPLIFIER CIRCUIT
US4471320A (en) * 1981-05-27 1984-09-11 Frey Douglas R Voltage controlled element
US4528515A (en) * 1983-02-07 1985-07-09 Tektronix, Inc. High frequency differential amplifier with adjustable damping factor
US4563670A (en) * 1983-12-14 1986-01-07 Tektronix, Inc. High speed multiplying digital to analog converter
DE3575506D1 (en) * 1984-06-07 1990-02-22 Siemens Ag DIFFERENTIAL AMPLIFIER CIRCUIT.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2262089C3 (en) * 1972-12-19 1975-10-30 Philips Patentverwaltung Gmbh, 2000 Hamburg Circuit arrangement for electronic frequency influencing, in particular electronic sound adjuster

Also Published As

Publication number Publication date
DE2755827A1 (en) 1979-06-21
FR2412200B1 (en) 1984-03-23
ATA898778A (en) 1984-02-15
GB2010616A (en) 1979-06-27
AT376078B (en) 1984-10-10
GB2010616B (en) 1982-04-21
FR2412200A1 (en) 1979-07-13

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