CH474913A - Steuerbare, elektrische Impedanz - Google Patents
Steuerbare, elektrische ImpedanzInfo
- Publication number
- CH474913A CH474913A CH1308368A CH1308368A CH474913A CH 474913 A CH474913 A CH 474913A CH 1308368 A CH1308368 A CH 1308368A CH 1308368 A CH1308368 A CH 1308368A CH 474913 A CH474913 A CH 474913A
- Authority
- CH
- Switzerland
- Prior art keywords
- electrical impedance
- controllable electrical
- controllable
- impedance
- electrical
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/613—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in parallel with the load as final control devices
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
- G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
- G06G7/16—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division
- G06G7/163—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division using a variable impedance controlled by one of the input signals, variable amplification or transfer function
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C1/00—Amplitude modulation
- H03C1/36—Amplitude modulation by means of semiconductor device having at least three electrodes
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/16—Automatic control
- H03G5/24—Automatic control in frequency-selective amplifiers
- H03G5/28—Automatic control in frequency-selective amplifiers having semiconductor devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/04—Control of transmission; Equalising
- H04B3/14—Control of transmission; Equalising characterised by the equalising network used
- H04B3/146—Control of transmission; Equalising characterised by the equalising network used using phase-frequency equalisers
- H04B3/148—Control of transmission; Equalising characterised by the equalising network used using phase-frequency equalisers variable equalisers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Automation & Control Theory (AREA)
- Radar, Positioning & Navigation (AREA)
- Software Systems (AREA)
- Computer Hardware Design (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Networks Using Active Elements (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US66507467A | 1967-09-01 | 1967-09-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH474913A true CH474913A (de) | 1969-06-30 |
Family
ID=24668606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1308368A CH474913A (de) | 1967-09-01 | 1968-08-30 | Steuerbare, elektrische Impedanz |
Country Status (10)
Country | Link |
---|---|
US (1) | US3539826A (de) |
JP (1) | JPS5345665B1 (de) |
BE (1) | BE719482A (de) |
CH (1) | CH474913A (de) |
DE (1) | DE1791025C3 (de) |
ES (1) | ES356988A1 (de) |
FR (1) | FR1577135A (de) |
GB (1) | GB1236994A (de) |
NL (1) | NL159834B (de) |
SE (1) | SE353425B (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3904971A (en) * | 1971-09-29 | 1975-09-09 | Us Navy | Automatic gain control amplifier circuit |
JPS5344100B2 (de) * | 1972-10-31 | 1978-11-25 | ||
JPS5947495B2 (ja) * | 1975-04-04 | 1984-11-19 | 株式会社日立製作所 | 可変インピ−ダンス回路 |
GB1573616A (en) * | 1976-03-04 | 1980-08-28 | Nat Semiconductor Uk Ltd | Electronic impedance devices |
DE2655320B2 (de) * | 1976-12-07 | 1979-02-01 | Te Ka De Felten & Guilleaume Fernmeldeanlagen Gmbh, 8500 Nuernberg | Steuerbarer elektronischer Widerstand |
US4155059A (en) * | 1977-06-14 | 1979-05-15 | Nobuo Doi | Circuit network showing proper equivalent impedance between two network terminals |
US4339677A (en) * | 1979-12-21 | 1982-07-13 | Signetics Corporation | Electrically variable impedance circuit with feedback compensation |
DE3124231A1 (de) * | 1981-06-20 | 1982-12-30 | M.K. Juchheim GmbH & Co, 6400 Fulda | Anordnung zur darstellung eines variablen elektrischen praezisionswiderstandes |
DE3323651A1 (de) * | 1983-07-01 | 1985-01-17 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Schaltungsanordnung zur erhoehung der querinduktivitaet eines uebertragers |
DE3323649A1 (de) * | 1983-07-01 | 1985-02-07 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Schaltungsanordnung zur erhoehung der induktivitaet einer spule |
US5623228A (en) * | 1993-05-17 | 1997-04-22 | Dan Inbar | Non-linear feedback network providing a linear transfer function |
US5978024A (en) * | 1994-04-15 | 1999-11-02 | Lg Semicon Co., Ltd. | Auto variable anti-blooming bias control circuit and method |
US6806767B2 (en) * | 2002-07-09 | 2004-10-19 | Anadigics, Inc. | Power amplifier with load switching circuit |
JP6290864B2 (ja) | 2012-05-11 | 2018-03-07 | モーメンタム ダイナミックス コーポレーション | 調整可能なリアクタンスを生成する方法及び装置 |
US9184709B2 (en) * | 2013-10-08 | 2015-11-10 | Peregrine Semiconductor Corporation | Resonant pre-driver for switching amplifier |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3233177A (en) * | 1962-09-17 | 1966-02-01 | Tracor | Radio frequency receiver gain control system with constant input impedance |
US3412340A (en) * | 1966-03-03 | 1968-11-19 | Bendix Corp | Variable attenuation circuit |
-
1967
- 1967-09-01 US US665074A patent/US3539826A/en not_active Expired - Lifetime
-
1968
- 1968-08-01 GB GB36653/68A patent/GB1236994A/en not_active Expired
- 1968-08-06 ES ES356988A patent/ES356988A1/es not_active Expired
- 1968-08-14 BE BE719482D patent/BE719482A/xx unknown
- 1968-08-19 FR FR1577135D patent/FR1577135A/fr not_active Expired
- 1968-08-19 JP JP5857768A patent/JPS5345665B1/ja active Pending
- 1968-08-28 NL NL6812207.A patent/NL159834B/xx not_active IP Right Cessation
- 1968-08-29 DE DE1791025A patent/DE1791025C3/de not_active Expired
- 1968-08-30 SE SE11703/68A patent/SE353425B/xx unknown
- 1968-08-30 CH CH1308368A patent/CH474913A/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
BE719482A (de) | 1969-01-16 |
DE1791025B2 (de) | 1977-10-20 |
ES356988A1 (es) | 1970-05-01 |
SE353425B (de) | 1973-01-29 |
US3539826A (en) | 1970-11-10 |
JPS5345665B1 (de) | 1978-12-08 |
GB1236994A (en) | 1971-06-23 |
DE1791025C3 (de) | 1978-06-08 |
DE1791025A1 (de) | 1971-10-21 |
NL159834B (nl) | 1979-03-15 |
NL6812207A (de) | 1969-03-04 |
FR1577135A (de) | 1969-08-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |