CA1035468A - Circuit symetrique pour resistance en alternatif variable - Google Patents

Circuit symetrique pour resistance en alternatif variable

Info

Publication number
CA1035468A
CA1035468A CA229,066A CA229066A CA1035468A CA 1035468 A CA1035468 A CA 1035468A CA 229066 A CA229066 A CA 229066A CA 1035468 A CA1035468 A CA 1035468A
Authority
CA
Canada
Prior art keywords
forming
symmetrical arrangement
current resistance
variable alternating
alternating
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
CA229,066A
Other languages
English (en)
Inventor
Nicolaas J. Baars
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
Application granted granted Critical
Publication of CA1035468A publication Critical patent/CA1035468A/fr
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
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0082—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using bipolar transistor-type devices
    • 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
CA229,066A 1974-06-17 1975-06-11 Circuit symetrique pour resistance en alternatif variable Expired CA1035468A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7408034.A NL161318C (nl) 1974-06-17 1974-06-17 Symmetrische inrichting voor het vormen van een regel- bare wisselstroomweerstand.

Publications (1)

Publication Number Publication Date
CA1035468A true CA1035468A (fr) 1978-07-25

Family

ID=19821555

Family Applications (1)

Application Number Title Priority Date Filing Date
CA229,066A Expired CA1035468A (fr) 1974-06-17 1975-06-11 Circuit symetrique pour resistance en alternatif variable

Country Status (14)

Country Link
JP (1) JPS5329584B2 (fr)
AR (1) AR205571A1 (fr)
AU (1) AU499961B2 (fr)
BR (1) BR7503768A (fr)
CA (1) CA1035468A (fr)
DE (2) DE2560093C3 (fr)
ES (1) ES438562A1 (fr)
FR (1) FR2275070A1 (fr)
GB (1) GB1519831A (fr)
HK (1) HK48679A (fr)
IT (1) IT1036297B (fr)
NL (1) NL161318C (fr)
SE (1) SE413448B (fr)
ZA (1) ZA753735B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52153651A (en) * 1976-06-17 1977-12-20 Sony Corp Gain changing circuit
US4345214A (en) 1980-04-23 1982-08-17 Rca Corporation Variable emitter degeneration gain-controlled amplifier
US4833422A (en) * 1987-09-24 1989-05-23 Burr-Brown Corporation Programmable gain instrumentation amplifier
DE19713571C1 (de) * 1997-04-02 1998-10-01 Telefunken Microelectron Steuerbare Widerstandsanordnung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1320027A (fr) 1961-10-19 1963-03-08 Westinghouse Electric Corp Potentiomètre à semi-conducteur

Also Published As

Publication number Publication date
IT1036297B (it) 1979-10-30
NL161318B (nl) 1979-08-15
ES438562A1 (es) 1977-05-16
GB1519831A (en) 1978-08-02
NL7408034A (nl) 1975-12-19
AU499961B2 (en) 1979-05-10
DE2526309B2 (de) 1979-09-20
DE2560093C3 (de) 1982-01-28
SE7506779L (sv) 1975-12-18
JPS5329584B2 (fr) 1978-08-22
SE413448B (sv) 1980-05-27
ZA753735B (en) 1977-01-26
FR2275070A1 (fr) 1976-01-09
DE2526309C3 (de) 1980-06-04
DE2526309A1 (de) 1976-01-02
DE2560093B2 (de) 1981-04-23
FR2275070B1 (fr) 1980-03-21
HK48679A (en) 1979-07-27
JPS5116885A (fr) 1976-02-10
BR7503768A (pt) 1976-07-06
AU8214675A (en) 1976-12-23
AR205571A1 (es) 1976-05-14
NL161318C (nl) 1980-01-15

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