GB2010616B - Circuit arrangement having a variable frequency response - Google Patents

Circuit arrangement having a variable frequency response

Info

Publication number
GB2010616B
GB2010616B GB7848607A GB7848607A GB2010616B GB 2010616 B GB2010616 B GB 2010616B GB 7848607 A GB7848607 A GB 7848607A GB 7848607 A GB7848607 A GB 7848607A GB 2010616 B GB2010616 B GB 2010616B
Authority
GB
United Kingdom
Prior art keywords
frequency response
circuit arrangement
variable frequency
variable
arrangement
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
GB7848607A
Other languages
English (en)
Other versions
GB2010616A (en
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 GB2010616A publication Critical patent/GB2010616A/en
Application granted granted Critical
Publication of GB2010616B publication Critical patent/GB2010616B/en
Expired 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
    • 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 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
GB7848607A 1977-12-15 1978-12-14 Circuit arrangement having a variable frequency response Expired GB2010616B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772755827 DE2755827A1 (de) 1977-12-15 1977-12-15 Schaltungsanordnung mit einem durch eine steuergleichspannung veraenderbaren frequenzgang

Publications (2)

Publication Number Publication Date
GB2010616A GB2010616A (en) 1979-06-27
GB2010616B true GB2010616B (en) 1982-04-21

Family

ID=6026151

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7848607A Expired GB2010616B (en) 1977-12-15 1978-12-14 Circuit arrangement having a variable frequency response

Country Status (5)

Country Link
JP (1) JPS5489551A (cg-RX-API-DMAC7.html)
AT (1) AT376078B (cg-RX-API-DMAC7.html)
DE (1) DE2755827A1 (cg-RX-API-DMAC7.html)
FR (1) FR2412200A1 (cg-RX-API-DMAC7.html)
GB (1) GB2010616B (cg-RX-API-DMAC7.html)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2465369A1 (fr) * 1979-09-13 1981-03-20 Thomson Csf Circuit melangeur et circuit de commande de volume et de tonalite de signal a frequence sonore utilisant un circuit melangeur
DE3007715A1 (de) 1980-02-29 1981-09-17 Philips Patentverwaltung Gmbh, 2000 Hamburg Verstaerkerschaltung mit durch eine steuerspannung steuerbarer gesamtverstaerkung
DE3026551A1 (de) * 1980-07-12 1982-02-04 Philips Patentverwaltung Gmbh, 2000 Hamburg Verstaerkerschaltung
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 (de) * 1984-06-07 1990-02-22 Siemens Ag Differenzverstaerkerschaltung.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2262089C3 (de) * 1972-12-19 1975-10-30 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung zur elektronischen Frequenzbeeinflussung, insbesondere elektronischer Klangeinsteller

Also Published As

Publication number Publication date
JPS5489551A (en) 1979-07-16
FR2412200B1 (cg-RX-API-DMAC7.html) 1984-03-23
FR2412200A1 (fr) 1979-07-13
GB2010616A (en) 1979-06-27
AT376078B (de) 1984-10-10
ATA898778A (de) 1984-02-15
DE2755827A1 (de) 1979-06-21

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee