FR2275070A1 - Dispositif symetrique servant a former une impedance regulee - Google Patents

Dispositif symetrique servant a former une impedance regulee

Info

Publication number
FR2275070A1
FR2275070A1 FR7518899A FR7518899A FR2275070A1 FR 2275070 A1 FR2275070 A1 FR 2275070A1 FR 7518899 A FR7518899 A FR 7518899A FR 7518899 A FR7518899 A FR 7518899A FR 2275070 A1 FR2275070 A1 FR 2275070A1
Authority
FR
France
Prior art keywords
device serving
symmetrical device
regulated impedance
impedance
regulated
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.)
Granted
Application number
FR7518899A
Other languages
English (en)
French (fr)
Other versions
FR2275070B1 (US07935154-20110503-C00018.png
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 FR2275070A1 publication Critical patent/FR2275070A1/fr
Application granted granted Critical
Publication of FR2275070B1 publication Critical patent/FR2275070B1/fr
Granted 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
FR7518899A 1974-06-17 1975-06-17 Dispositif symetrique servant a former une impedance regulee Granted FR2275070A1 (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 (2)

Publication Number Publication Date
FR2275070A1 true FR2275070A1 (fr) 1976-01-09
FR2275070B1 FR2275070B1 (US07935154-20110503-C00018.png) 1980-03-21

Family

ID=19821555

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7518899A Granted FR2275070A1 (fr) 1974-06-17 1975-06-17 Dispositif symetrique servant a former une impedance regulee

Country Status (14)

Country Link
JP (1) JPS5329584B2 (US07935154-20110503-C00018.png)
AR (1) AR205571A1 (US07935154-20110503-C00018.png)
AU (1) AU499961B2 (US07935154-20110503-C00018.png)
BR (1) BR7503768A (US07935154-20110503-C00018.png)
CA (1) CA1035468A (US07935154-20110503-C00018.png)
DE (2) DE2526309C3 (US07935154-20110503-C00018.png)
ES (1) ES438562A1 (US07935154-20110503-C00018.png)
FR (1) FR2275070A1 (US07935154-20110503-C00018.png)
GB (1) GB1519831A (US07935154-20110503-C00018.png)
HK (1) HK48679A (US07935154-20110503-C00018.png)
IT (1) IT1036297B (US07935154-20110503-C00018.png)
NL (1) NL161318C (US07935154-20110503-C00018.png)
SE (1) SE413448B (US07935154-20110503-C00018.png)
ZA (1) ZA753735B (US07935154-20110503-C00018.png)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2727320A1 (de) * 1976-06-17 1977-12-29 Sony Corp Verstaerkungsregler
US4833422A (en) * 1987-09-24 1989-05-23 Burr-Brown Corporation Programmable gain instrumentation amplifier

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4345214A (en) 1980-04-23 1982-08-17 Rca Corporation Variable emitter degeneration gain-controlled 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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2727320A1 (de) * 1976-06-17 1977-12-29 Sony Corp Verstaerkungsregler
FR2355401A1 (fr) * 1976-06-17 1978-01-13 Sony Corp Circuit a commande de gain
US4139824A (en) * 1976-06-17 1979-02-13 Sony Corporation Gain control circuit
US4833422A (en) * 1987-09-24 1989-05-23 Burr-Brown Corporation Programmable gain instrumentation amplifier

Also Published As

Publication number Publication date
DE2560093B2 (de) 1981-04-23
GB1519831A (en) 1978-08-02
NL161318C (nl) 1980-01-15
DE2560093C3 (de) 1982-01-28
BR7503768A (pt) 1976-07-06
DE2526309C3 (de) 1980-06-04
ZA753735B (en) 1977-01-26
DE2526309A1 (de) 1976-01-02
NL7408034A (nl) 1975-12-19
JPS5116885A (US07935154-20110503-C00018.png) 1976-02-10
IT1036297B (it) 1979-10-30
FR2275070B1 (US07935154-20110503-C00018.png) 1980-03-21
AR205571A1 (es) 1976-05-14
DE2526309B2 (de) 1979-09-20
ES438562A1 (es) 1977-05-16
SE413448B (sv) 1980-05-27
JPS5329584B2 (US07935154-20110503-C00018.png) 1978-08-22
CA1035468A (en) 1978-07-25
SE7506779L (sv) 1975-12-18
AU499961B2 (en) 1979-05-10
HK48679A (en) 1979-07-27
AU8214675A (en) 1976-12-23
NL161318B (nl) 1979-08-15

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Legal Events

Date Code Title Description
ST Notification of lapse