FR2373916A1 - Resistance electronique controlable - Google Patents
Resistance electronique controlableInfo
- Publication number
- FR2373916A1 FR2373916A1 FR7736483A FR7736483A FR2373916A1 FR 2373916 A1 FR2373916 A1 FR 2373916A1 FR 7736483 A FR7736483 A FR 7736483A FR 7736483 A FR7736483 A FR 7736483A FR 2373916 A1 FR2373916 A1 FR 2373916A1
- Authority
- FR
- France
- Prior art keywords
- resistor
- electronic
- controlable
- electronic resistance
- voltage divider
- 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
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
-
- 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
- H03G1/0047—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using photo-electric elements
-
- 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
- H03G1/007—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using FET 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
- H03G1/0035—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
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/46—One-port networks
Landscapes
- Networks Using Active Elements (AREA)
- Amplifiers (AREA)
- Attenuators (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
L'invention concerne une résistance électronique contrôlable. Le montage de l'invention comprend un diviseur de tension ST comportant une première résistance R1 et une deuxième résistance R2 commandée par une grandeur de commande S, la prise de ce diviseur étant raccordée à l'entrée d'un amplificateur V dont la sortie est raccordée, via une troisième résistance R3, à une extrémité du diviseur de tension ST dont les deux extrémités forment les bornes de la résistance électronique RS1. L'invention est utilisée pour élever la limite de puissance admissible et l'affaiblissement de distorsion harmonique d'une résistance électronique.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2655320A DE2655320B2 (de) | 1976-12-07 | 1976-12-07 | Steuerbarer elektronischer Widerstand |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2373916A1 true FR2373916A1 (fr) | 1978-07-07 |
FR2373916B1 FR2373916B1 (fr) | 1984-08-17 |
Family
ID=5994856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7736483A Granted FR2373916A1 (fr) | 1976-12-07 | 1977-12-05 | Resistance electronique controlable |
Country Status (12)
Country | Link |
---|---|
US (1) | US4137466A (fr) |
JP (1) | JPS5383554A (fr) |
AT (1) | AT358100B (fr) |
BE (1) | BE861574A (fr) |
CA (1) | CA1089038A (fr) |
CH (1) | CH622138A5 (fr) |
DE (1) | DE2655320B2 (fr) |
FR (1) | FR2373916A1 (fr) |
GB (1) | GB1590038A (fr) |
IL (1) | IL53551A (fr) |
SE (1) | SE414687B (fr) |
ZA (1) | ZA777294B (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3334243A1 (de) * | 1983-09-22 | 1985-04-04 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Kapazitiver, komplexer widerstand |
US4766395A (en) * | 1985-10-15 | 1988-08-23 | Dolby Ray Milton | Circuits to provide desired conductance characteristics using a FET |
US4786879A (en) * | 1986-03-03 | 1988-11-22 | Dolby Ray Milton | Attenuator circuit employing bootstrapping |
US4888810A (en) * | 1987-08-05 | 1989-12-19 | Argosy Electronics | Analog volume control circuit |
US4855685A (en) * | 1987-09-30 | 1989-08-08 | Texas Instruments Incorporated | Precision switchable gain circuit |
US5479123A (en) * | 1993-06-18 | 1995-12-26 | Digital Equipment Corporation | Externally programmable integrated bus terminator for optimizing system bus performance |
US5583464A (en) * | 1994-05-13 | 1996-12-10 | Thinking Machines Corporation | Resistor circuit for integrated circuit chip using insulated field effect transistors |
DE10226031A1 (de) * | 2002-06-12 | 2003-12-24 | Bosch Gmbh Robert | Schaltregler, insbesondere Abwärtswandler, und Schaltregelverfahren |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1151285A (en) * | 1966-03-03 | 1969-05-07 | Bendix Corp | Variable Attenuation Circuit |
US3539826A (en) * | 1967-09-01 | 1970-11-10 | Ibm | Active variable impedance device for large signal applications |
GB1228412A (fr) * | 1968-03-05 | 1971-04-15 | ||
US3621284A (en) * | 1970-12-07 | 1971-11-16 | Sylvania Electric Prod | Attenuation circuit |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT995990B (it) * | 1973-10-19 | 1975-11-20 | Ates Componenti Elettron | Attenuatore attivo a minima distorsione armonica totale per amplificatori in alternata con controllo automatico del livello d uscita |
US4001735A (en) * | 1975-11-20 | 1977-01-04 | Northern Electric Company Limited | Single amplifier immittance network |
-
1976
- 1976-12-07 DE DE2655320A patent/DE2655320B2/de active Granted
-
1977
- 1977-11-30 SE SE7713576A patent/SE414687B/sv not_active IP Right Cessation
- 1977-12-03 JP JP14562877A patent/JPS5383554A/ja active Granted
- 1977-12-05 FR FR7736483A patent/FR2373916A1/fr active Granted
- 1977-12-06 AT AT872677A patent/AT358100B/de not_active IP Right Cessation
- 1977-12-06 IL IL53551A patent/IL53551A/xx unknown
- 1977-12-06 CH CH1491677A patent/CH622138A5/de not_active IP Right Cessation
- 1977-12-07 ZA ZA00777294A patent/ZA777294B/xx unknown
- 1977-12-07 GB GB50897/77A patent/GB1590038A/en not_active Expired
- 1977-12-07 CA CA292,572A patent/CA1089038A/fr not_active Expired
- 1977-12-07 US US05/858,266 patent/US4137466A/en not_active Expired - Lifetime
- 1977-12-07 BE BE183224A patent/BE861574A/fr not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1151285A (en) * | 1966-03-03 | 1969-05-07 | Bendix Corp | Variable Attenuation Circuit |
US3539826A (en) * | 1967-09-01 | 1970-11-10 | Ibm | Active variable impedance device for large signal applications |
GB1228412A (fr) * | 1968-03-05 | 1971-04-15 | ||
US3621284A (en) * | 1970-12-07 | 1971-11-16 | Sylvania Electric Prod | Attenuation circuit |
Also Published As
Publication number | Publication date |
---|---|
DE2655320B2 (de) | 1979-02-01 |
BE861574A (fr) | 1978-03-31 |
ATA872677A (de) | 1980-01-15 |
JPH0137885B2 (fr) | 1989-08-10 |
ZA777294B (en) | 1978-10-25 |
US4137466A (en) | 1979-01-30 |
IL53551A0 (en) | 1978-03-10 |
AT358100B (de) | 1980-08-25 |
DE2655320C3 (fr) | 1987-02-12 |
JPS5383554A (en) | 1978-07-24 |
SE7713576L (sv) | 1978-06-08 |
IL53551A (en) | 1980-01-31 |
SE414687B (sv) | 1980-08-11 |
GB1590038A (en) | 1981-05-28 |
CA1089038A (fr) | 1980-11-04 |
DE2655320A1 (de) | 1978-06-08 |
FR2373916B1 (fr) | 1984-08-17 |
CH622138A5 (fr) | 1981-03-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |