NO794305L - Operasjonsforsterker med variabel forsterkning. - Google Patents
Operasjonsforsterker med variabel forsterkning.Info
- Publication number
- NO794305L NO794305L NO794305A NO794305A NO794305L NO 794305 L NO794305 L NO 794305L NO 794305 A NO794305 A NO 794305A NO 794305 A NO794305 A NO 794305A NO 794305 L NO794305 L NO 794305L
- Authority
- NO
- Norway
- Prior art keywords
- amplifier
- input
- load
- differential
- inverting
- Prior art date
Links
- 238000000034 method Methods 0.000 claims description 12
- 238000012986 modification Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 239000011888 foil Substances 0.000 claims 1
- 235000015250 liver sausages Nutrition 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- XYSQXZCMOLNHOI-UHFFFAOYSA-N s-[2-[[4-(acetylsulfamoyl)phenyl]carbamoyl]phenyl] 5-pyridin-1-ium-1-ylpentanethioate;bromide Chemical compound [Br-].C1=CC(S(=O)(=O)NC(=O)C)=CC=C1NC(=O)C1=CC=CC=C1SC(=O)CCCC[N+]1=CC=CC=C1 XYSQXZCMOLNHOI-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 description 31
- 238000013016 damping Methods 0.000 description 25
- 230000001939 inductive effect Effects 0.000 description 21
- 230000001965 increasing effect Effects 0.000 description 13
- 230000009467 reduction Effects 0.000 description 12
- 230000003321 amplification Effects 0.000 description 11
- 230000033001 locomotion Effects 0.000 description 11
- 238000003199 nucleic acid amplification method Methods 0.000 description 11
- 230000010363 phase shift Effects 0.000 description 11
- 230000008859 change Effects 0.000 description 10
- 230000002829 reductive effect Effects 0.000 description 10
- 230000003247 decreasing effect Effects 0.000 description 9
- 230000004044 response Effects 0.000 description 9
- 230000000630 rising effect Effects 0.000 description 9
- 230000033228 biological regulation Effects 0.000 description 8
- 230000002411 adverse Effects 0.000 description 7
- 238000012937 correction Methods 0.000 description 6
- 230000001419 dependent effect Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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
- H03F1/42—Modifications of amplifiers to extend the bandwidth
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
- H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
- H03F3/187—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only in integrated circuits
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/02—Manually-operated control
- H03G3/04—Manually-operated control in untuned amplifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Circuit For Audible Band Transducer (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Control Of Amplification And Gain Control (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/006,735 US4260954A (en) | 1979-01-26 | 1979-01-26 | Amplifier load correction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO794305L true NO794305L (no) | 1980-07-29 |
Family
ID=21722311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO794305A NO794305L (no) | 1979-01-26 | 1979-12-28 | Operasjonsforsterker med variabel forsterkning. |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4260954A (it) |
| JP (1) | JPS55100799A (it) |
| KR (1) | KR830002445A (it) |
| CA (1) | CA1133595A (it) |
| DE (1) | DE3002487A1 (it) |
| DK (1) | DK29680A (it) |
| FR (1) | FR2449365A1 (it) |
| GB (1) | GB2040634B (it) |
| IT (1) | IT1149286B (it) |
| NL (1) | NL8000476A (it) |
| NO (1) | NO794305L (it) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4638258A (en) * | 1982-02-26 | 1987-01-20 | Barcus-Berry Electronics, Inc. | Reference load amplifier correction system |
| US4710727A (en) * | 1985-08-30 | 1987-12-01 | Aardvark Audio Inc. | Nonlinear distortion synthesizer using over-threshold power-function feedback |
| GB2187607B (en) * | 1986-03-05 | 1990-03-21 | Malcolm John Hawksford | Apparatus and methods for driving loupspeaker systems |
| SE450613B (sv) * | 1986-03-20 | 1987-07-06 | Goran Hahne | Forfarande och kretsanordning for att forbettra frekvensatergivningen hos en audio-basforsterkare |
| US4953218A (en) * | 1987-07-16 | 1990-08-28 | Hughes Jr Robert K | Foreground music system using current amplification |
| US4992758A (en) * | 1987-11-30 | 1991-02-12 | Kabushiki Kaisha Toshiba | Power amplifying apparatus for optical disk apparatus |
| US5197102A (en) * | 1991-01-14 | 1993-03-23 | Peavey Electronics Corporation | Audio power amplifier system with frequency selective damping factor controls |
| US5266905A (en) * | 1992-05-29 | 1993-11-30 | Audio Research Corporation | Audio amplifier with amplified feedback |
| GB2268356A (en) * | 1992-06-23 | 1994-01-05 | Itzhak Chavet | High-fidelity loudspeaker. |
| US5245296A (en) * | 1992-07-10 | 1993-09-14 | Miller Francis A | Audio amplifier circuit and method of operation |
| WO1996040303A1 (en) * | 1995-06-07 | 1996-12-19 | Alcon Laboratories, Inc. | Improved high refractive index ophthalmic lens materials |
| US5705951A (en) * | 1995-08-28 | 1998-01-06 | Haakansson; Bjarne | Method for correction of error signals in a signal amplification system and an apparatus used for that purpose |
| US5721784A (en) * | 1996-01-30 | 1998-02-24 | Bernardo; Carmelo F. | Asymmetrical driver for asymmetrical loudspeakers |
| US5796305A (en) * | 1996-06-14 | 1998-08-18 | Peavey Electronics Corporation | Amplifier arrangements with high damping factor |
| US6130582A (en) * | 1998-12-04 | 2000-10-10 | Delco Electronics Corporation | Amplifier circuit including compensation circuitry for canceling variations in an amplifier feedback signal |
| DK1210380T3 (da) | 1999-09-07 | 2005-05-30 | Alcon Inc | Sammenfoldelige oftalmiske og otorhinolaryngologiske anordningsmaterialer |
| US6417659B1 (en) * | 2000-08-15 | 2002-07-09 | Systems Material Handling Co. | Electronic circuit for tuning vibratory transducers |
| US6771781B2 (en) * | 2001-05-08 | 2004-08-03 | Daniel A. Chattin | Variable damping circuit for a loudspeaker |
| US8390374B2 (en) * | 2011-01-25 | 2013-03-05 | Analog Devices, Inc. | Apparatus and method for amplification with high front-end gain in the presence of large DC offsets |
| CN102892058A (zh) * | 2011-07-18 | 2013-01-23 | 中兴通讯股份有限公司 | 自动调节音量大小的方法及装置 |
| JP5780119B2 (ja) * | 2011-10-31 | 2015-09-16 | ヤマハ株式会社 | 音声出力アンプ |
| KR102203767B1 (ko) * | 2013-12-30 | 2021-01-15 | 엘지디스플레이 주식회사 | 게이트 전압에 따른 공통 전압 보상 회로 |
| CN112788487B (zh) | 2014-06-03 | 2022-05-27 | 杜比实验室特许公司 | 分频电路、扬声器以及音频场景生成方法和设备 |
| US10313793B2 (en) | 2014-06-03 | 2019-06-04 | Dolby Laboratories Licensing Corporation | Passive and active virtual height filter systems for upward firing drivers |
| CN108235173A (zh) * | 2018-02-11 | 2018-06-29 | 钰太芯微电子科技（上海）有限公司 | 一种麦克风电路及具有降噪功能的耳机 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3525812A (en) * | 1969-05-08 | 1970-08-25 | James E Verdier | Transducer circuit and method of operation |
| DE2235664A1 (de) * | 1972-07-20 | 1974-01-31 | Max Planck Gesellschaft | Schaltungsanordnung zur kompensation des spannungsabfalls an einem lautsprecher |
| US3902111A (en) * | 1974-05-31 | 1975-08-26 | Leeds & Northrup Co | Controller output circuit |
| DE2641581C3 (de) * | 1976-09-13 | 1985-05-09 | Siemens AG, 1000 Berlin und 8000 München | Spannungsmeßeinrichtung für Hochspannungen |
| FR2369767A1 (fr) * | 1976-10-29 | 1978-05-26 | Thomson Csf | Enceinte electroacoustique asservie |
| NL183803C (nl) * | 1977-01-17 | 1989-02-01 | Philips Nv | Inrichting voor het weergeven van veranderlijke grootheden op een beeldscherm van een kathodestraalbuis. |
| JPS53141554A (en) * | 1977-05-16 | 1978-12-09 | Toshiba Corp | Amplifier |
| US4153849A (en) * | 1977-08-01 | 1979-05-08 | Bunker Ramo Corporation | Circuit for normalizing devices having current-controlled frequency response to predetermined I-F characteristic |
-
1979
- 1979-01-26 US US06/006,735 patent/US4260954A/en not_active Expired - Lifetime
- 1979-12-28 NO NO794305A patent/NO794305L/no unknown
-
1980
- 1980-01-22 CA CA344,155A patent/CA1133595A/en not_active Expired
- 1980-01-23 KR KR1019800000243A patent/KR830002445A/ko unknown
- 1980-01-24 DK DK29680A patent/DK29680A/da not_active Application Discontinuation
- 1980-01-24 DE DE19803002487 patent/DE3002487A1/de not_active Withdrawn
- 1980-01-25 FR FR8001666A patent/FR2449365A1/fr not_active Withdrawn
- 1980-01-25 GB GB8002551A patent/GB2040634B/en not_active Expired
- 1980-01-25 NL NL8000476A patent/NL8000476A/nl not_active Application Discontinuation
- 1980-01-25 IT IT19494/80A patent/IT1149286B/it active
- 1980-01-26 JP JP823080A patent/JPS55100799A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55100799A (en) | 1980-07-31 |
| IT1149286B (it) | 1986-12-03 |
| DE3002487A1 (de) | 1980-07-31 |
| US4260954A (en) | 1981-04-07 |
| NL8000476A (nl) | 1980-07-29 |
| FR2449365A1 (fr) | 1980-09-12 |
| DK29680A (da) | 1980-07-27 |
| IT8019494A0 (it) | 1980-01-25 |
| CA1133595A (en) | 1982-10-12 |
| KR830002445A (ko) | 1983-05-28 |
| GB2040634A (en) | 1980-08-28 |
| GB2040634B (en) | 1983-05-11 |
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