GB1446724A - Automatic gain control circuits - Google Patents
Automatic gain control circuitsInfo
- Publication number
- GB1446724A GB1446724A GB4073773A GB4073773A GB1446724A GB 1446724 A GB1446724 A GB 1446724A GB 4073773 A GB4073773 A GB 4073773A GB 4073773 A GB4073773 A GB 4073773A GB 1446724 A GB1446724 A GB 1446724A
- Authority
- GB
- United Kingdom
- Prior art keywords
- automatic gain
- signal
- gain control
- diode
- electrode
- 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
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
- H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
- H03G3/3015—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable using diodes or transistors
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Control Of Amplification And Gain Control (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8630572A JPS5549451B2 (US08177716-20120515-C00003.png) | 1972-08-30 | 1972-08-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1446724A true GB1446724A (en) | 1976-08-18 |
Family
ID=13883110
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4073773A Expired GB1446724A (en) | 1972-08-30 | 1973-08-29 | Automatic gain control circuits |
Country Status (6)
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2473234A1 (fr) * | 1979-12-21 | 1981-07-10 | Philips Nv | Circuit a impedance electriquement variable et a compensation par reaction |
GB2209646A (en) * | 1987-09-07 | 1989-05-17 | Lake Electronic Tech | Automatic volume control in loudspeaking telephone |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5515388Y2 (US08177716-20120515-C00003.png) * | 1974-09-12 | 1980-04-09 | ||
JPS5178966A (ja) * | 1974-12-30 | 1976-07-09 | Victor Company Of Japan | Kahenshutsuryokuinpiidansuzofukuki |
US4646012A (en) * | 1984-01-24 | 1987-02-24 | Westinghouse Electric Corp. | Digital, electromagnetic rod position indicator with precisely controlled transitions between digital states |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1313261A (fr) * | 1961-11-15 | 1962-12-28 | Thomson Houston Comp Francaise | Perfectionnements aux systèmes de régulation |
FR1364928A (fr) * | 1962-10-08 | 1964-06-26 | Siemens Ag Albis | Dispositif amplificateur pour tensions alternatives |
US3267388A (en) * | 1963-04-26 | 1966-08-16 | Transitel Internat Corp | Automatic threshold amplifier employing variable impedance means |
US3397324A (en) * | 1965-04-14 | 1968-08-13 | Avco Corp | Peak amplitude to r. m. s. limiter |
US3490046A (en) * | 1967-04-05 | 1970-01-13 | Electrohome Ltd | Automatic gain control and overload protection for signal receiving systems |
JPS4520810Y1 (US08177716-20120515-C00003.png) * | 1967-09-11 | 1970-08-20 | ||
DE1803655A1 (de) * | 1968-10-17 | 1970-06-11 | Siemens Ag | Verstaerker mit zwei Transistoren und Gegenkopplung |
-
1972
- 1972-08-30 JP JP8630572A patent/JPS5549451B2/ja not_active Expired
-
1973
- 1973-08-07 US US00386415A patent/US3846711A/en not_active Expired - Lifetime
- 1973-08-16 NL NL7311332A patent/NL7311332A/xx not_active Application Discontinuation
- 1973-08-17 FR FR7330069A patent/FR2198310B1/fr not_active Expired
- 1973-08-29 GB GB4073773A patent/GB1446724A/en not_active Expired
- 1973-08-29 DE DE19732343603 patent/DE2343603A1/de active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2473234A1 (fr) * | 1979-12-21 | 1981-07-10 | Philips Nv | Circuit a impedance electriquement variable et a compensation par reaction |
GB2209646A (en) * | 1987-09-07 | 1989-05-17 | Lake Electronic Tech | Automatic volume control in loudspeaking telephone |
GB2209646B (en) * | 1987-09-07 | 1991-06-12 | Lake Electronic Tech | A speech circuit for a telephone |
Also Published As
Publication number | Publication date |
---|---|
FR2198310A1 (US08177716-20120515-C00003.png) | 1974-03-29 |
US3846711A (en) | 1974-11-05 |
FR2198310B1 (US08177716-20120515-C00003.png) | 1976-09-17 |
DE2343603A1 (de) | 1974-04-04 |
NL7311332A (US08177716-20120515-C00003.png) | 1974-03-04 |
JPS5549451B2 (US08177716-20120515-C00003.png) | 1980-12-12 |
JPS4943554A (US08177716-20120515-C00003.png) | 1974-04-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19930828 |