ES448501A1 - Variable gain amplifier circuit arrangement - Google Patents
Variable gain amplifier circuit arrangementInfo
- Publication number
- ES448501A1 ES448501A1 ES448501A ES448501A ES448501A1 ES 448501 A1 ES448501 A1 ES 448501A1 ES 448501 A ES448501 A ES 448501A ES 448501 A ES448501 A ES 448501A ES 448501 A1 ES448501 A1 ES 448501A1
- Authority
- ES
- Spain
- Prior art keywords
- maneuvering
- frequency
- amplifier circuit
- circuit arrangement
- variable gain
- 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
Links
Classifications
-
- 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
- H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems
Landscapes
- Amplifiers (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Abstract
Improvements in the construction of amplifiers with variable transmission measurement especially for a compander system, and a variable lower limit frequency by means of a maneuvering voltage, a counter-coupling path being provided from the output of the amplifier to an inverting input with respect to the signals of the amplifier output, characterized in that the counter-coupling path contains a parallel connection composed of an electronically adjustable resistor and of an impedance, dependent on frequency, because a second impedance is connected between the inverting input and the reference voltage, dependent of frequency and because the maneuvering voltage is provided to the maneuvering input of the adjustable resistance. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2530144A DE2530144C3 (en) | 1975-07-05 | 1975-07-05 | Amplifier with variable transmission |
| DE2542745A DE2542745C2 (en) | 1975-09-25 | 1975-09-25 | Amplifier with variable transmission, especially for a compander system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES448501A1 true ES448501A1 (en) | 1977-12-01 |
Family
ID=25769116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES448501A Expired ES448501A1 (en) | 1975-07-05 | 1976-06-03 | Variable gain amplifier circuit arrangement |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS529351A (en) |
| AT (1) | AT361540B (en) |
| AU (1) | AU497146B2 (en) |
| BR (1) | BR7604274A (en) |
| DK (1) | DK300576A (en) |
| ES (1) | ES448501A1 (en) |
| FR (1) | FR2317809A1 (en) |
| GB (1) | GB1552784A (en) |
| IT (1) | IT1062105B (en) |
| SE (1) | SE414255B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5240807A (en) * | 1987-08-20 | 1993-08-31 | Hoechst Celanese Corporation | Photoresist article having a portable, conformable, built-on mask |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5759693B2 (en) * | 1973-06-28 | 1982-12-16 | Victor Company Of Japan | |
| DE2406258C2 (en) * | 1974-02-09 | 1976-01-08 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Circuit for automatic dynamic compression or expansion |
-
1976
- 1976-06-03 ES ES448501A patent/ES448501A1/en not_active Expired
- 1976-06-22 AU AU15133/76A patent/AU497146B2/en not_active Expired
- 1976-06-25 GB GB2648176A patent/GB1552784A/en not_active Expired
- 1976-06-30 BR BR7604274A patent/BR7604274A/en unknown
- 1976-07-01 IT IT2493776A patent/IT1062105B/en active
- 1976-07-01 AT AT481876A patent/AT361540B/en not_active IP Right Cessation
- 1976-07-02 SE SE7607624A patent/SE414255B/en not_active IP Right Cessation
- 1976-07-02 DK DK300576A patent/DK300576A/en not_active Application Discontinuation
- 1976-07-02 JP JP51078825A patent/JPS529351A/en active Pending
- 1976-07-05 FR FR7620513A patent/FR2317809A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS529351A (en) | 1977-01-24 |
| BR7604274A (en) | 1977-04-05 |
| ATA481876A (en) | 1980-08-15 |
| DK300576A (en) | 1977-01-06 |
| IT1062105B (en) | 1983-06-25 |
| AT361540B (en) | 1981-03-10 |
| SE7607624L (en) | 1977-01-06 |
| AU497146B2 (en) | 1978-11-30 |
| AU1513376A (en) | 1978-01-05 |
| FR2317809B1 (en) | 1982-11-26 |
| SE414255B (en) | 1980-07-14 |
| GB1552784A (en) | 1979-09-19 |
| FR2317809A1 (en) | 1977-02-04 |
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