FR2403685A1 - Amplificateur a limiteur de courant - Google Patents
Amplificateur a limiteur de courantInfo
- Publication number
- FR2403685A1 FR2403685A1 FR7826849A FR7826849A FR2403685A1 FR 2403685 A1 FR2403685 A1 FR 2403685A1 FR 7826849 A FR7826849 A FR 7826849A FR 7826849 A FR7826849 A FR 7826849A FR 2403685 A1 FR2403685 A1 FR 2403685A1
- Authority
- FR
- France
- Prior art keywords
- current limiter
- limiter amplifier
- transistors
- current
- transistor
- 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
- 230000005669 field effect Effects 0.000 abstract 1
- 239000000779 smoke Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/34—DC amplifiers in which all stages are DC-coupled
- H03F3/343—DC amplifiers in which all stages are DC-coupled with semiconductor devices only
- H03F3/345—DC amplifiers in which all stages are DC-coupled with semiconductor devices only with field-effect devices
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
-
- 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
- H03F1/52—Circuit arrangements for protecting such amplifiers
- H03F1/523—Circuit arrangements for protecting such amplifiers for amplifiers using field-effect devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
- H03G11/002—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general without controlling loop
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Amplifiers (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Abstract
L'invention concerne les amplificateurs à transistors. Dans un amplificateur qui comporte deux transistors à effet de champ Q5 et Q6 qui des signaux d'attaque symétriques à des transistors bipolaires de sortie Q3 et Q4 , un réseau de limitation de courant 14, R1 limite le courant de base des transistors Q3 et Q4 , en dérivant le courant de sortie du transistor Q5 au-delà d'un certain seuil. Application aux détecteurs de fumée.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3896677 | 1977-09-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2403685A1 true FR2403685A1 (fr) | 1979-04-13 |
FR2403685B1 FR2403685B1 (fr) | 1983-11-25 |
Family
ID=10406797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7826849A Granted FR2403685A1 (fr) | 1977-09-19 | 1978-09-19 | Amplificateur a limiteur de courant |
Country Status (4)
Country | Link |
---|---|
US (1) | US4183020A (fr) |
JP (1) | JPS6013604B2 (fr) |
DE (1) | DE2840704C3 (fr) |
FR (1) | FR2403685A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107085934A (zh) * | 2017-04-10 | 2017-08-22 | 中国电力科学研究院 | 一种用电信息采集设备性能检测方法及系统 |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4354163A (en) * | 1980-04-30 | 1982-10-12 | Ford Aerospace & Communications Corporation | High voltage buffer amplifier |
JPH0666708B2 (ja) * | 1987-02-05 | 1994-08-24 | 日本電気株式会社 | スピ−カ駆動回路 |
US4796503A (en) * | 1987-06-15 | 1989-01-10 | Industrial Technology Research Institute | Amplification circuit for electronic tone generator |
US5086282A (en) * | 1990-10-05 | 1992-02-04 | Allied-Signal Inc. | Field effect transistor-bipolar transistor Darlington pair |
US5187110A (en) * | 1990-10-05 | 1993-02-16 | Allied-Signal Inc. | Field effect transistor-bipolar transistor darlington pair |
US6624704B1 (en) * | 2001-10-25 | 2003-09-23 | National Semiconductor Corporation | High speed high current gain operational amplifier |
US6784747B1 (en) | 2003-03-20 | 2004-08-31 | Analog Devices, Inc. | Amplifier circuit |
US6816015B2 (en) | 2003-03-27 | 2004-11-09 | Analog Devices, Inc. | Amplifier circuit having a plurality of first and second base resistors |
US20100102940A1 (en) | 2008-10-23 | 2010-04-29 | Mallory Sonalert Products, Inc. | Electronic sound level control in audible signaling devices |
US8797176B1 (en) | 2011-12-15 | 2014-08-05 | Mallory Sonalert Products, Inc. | Multi-sensory warning device |
US9030318B1 (en) | 2013-03-15 | 2015-05-12 | Mallory Sonalert Products, Inc. | Wireless tandem alarm |
CN112666440A (zh) * | 2020-12-15 | 2021-04-16 | 中国科学院上海微系统与信息技术研究所 | 阈值电压的测量方法以及晶圆测试机台 |
CN114326785B (zh) * | 2021-11-30 | 2024-02-27 | 国网河南省电力公司荥阳市供电公司 | 无人机变电站飞行检测系统 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3536958A (en) * | 1967-12-05 | 1970-10-27 | Rca Corp | Amplifier protection circuit |
FR2247848A1 (fr) * | 1973-10-16 | 1975-05-09 | Sony Corp | |
FR2249463A1 (fr) * | 1973-10-29 | 1975-05-23 | Honeywell Gmbh | |
US3921089A (en) * | 1973-09-28 | 1975-11-18 | Sony Corp | Transistor amplifier |
DE2753324A1 (de) * | 1976-12-01 | 1978-06-08 | Gen Electric | Rauchdetektor |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3441864A (en) * | 1966-02-07 | 1969-04-29 | Tld Inc | Transistor amplifier protective circuits |
US3796967A (en) * | 1966-09-19 | 1974-03-12 | Rca Corp | Amplifier protection circuit |
US3526845A (en) * | 1966-12-19 | 1970-09-01 | Nasa | Apparatus for overcurrent protection of a push-pull amplifier |
US3500218A (en) * | 1967-06-01 | 1970-03-10 | Analog Devices Inc | Transistor complementary pair power amplifier with active current limiting means |
US3974456A (en) * | 1975-02-12 | 1976-08-10 | National Semiconductor Corporation | Amplifier output stage |
US4054805A (en) * | 1975-12-15 | 1977-10-18 | Stebbins Russell T | Electronic switching device |
US4084156A (en) * | 1976-06-24 | 1978-04-11 | Rca Corporation | Voltage monitoring circuit |
US4097851A (en) * | 1976-07-19 | 1978-06-27 | Pittway Corporation | Sensitivity compensated fire detector |
US4103190A (en) * | 1977-03-25 | 1978-07-25 | Motorola, Inc. | Complementary power saving comparator/inverter circuits |
-
1978
- 1978-09-08 US US05/940,573 patent/US4183020A/en not_active Expired - Lifetime
- 1978-09-18 JP JP53115038A patent/JPS6013604B2/ja not_active Expired
- 1978-09-19 DE DE2840704A patent/DE2840704C3/de not_active Expired
- 1978-09-19 FR FR7826849A patent/FR2403685A1/fr active Granted
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3536958A (en) * | 1967-12-05 | 1970-10-27 | Rca Corp | Amplifier protection circuit |
US3921089A (en) * | 1973-09-28 | 1975-11-18 | Sony Corp | Transistor amplifier |
FR2247848A1 (fr) * | 1973-10-16 | 1975-05-09 | Sony Corp | |
FR2249463A1 (fr) * | 1973-10-29 | 1975-05-23 | Honeywell Gmbh | |
DE2753324A1 (de) * | 1976-12-01 | 1978-06-08 | Gen Electric | Rauchdetektor |
FR2385097A1 (fr) * | 1976-12-01 | 1978-10-20 | Gen Electric | Detecteur de fumee |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107085934A (zh) * | 2017-04-10 | 2017-08-22 | 中国电力科学研究院 | 一种用电信息采集设备性能检测方法及系统 |
CN107085934B (zh) * | 2017-04-10 | 2020-09-11 | 中国电力科学研究院 | 一种用电信息采集设备性能检测方法及系统 |
Also Published As
Publication number | Publication date |
---|---|
JPS5456752A (en) | 1979-05-08 |
DE2840704A1 (de) | 1979-03-22 |
DE2840704C3 (de) | 1982-02-18 |
JPS6013604B2 (ja) | 1985-04-08 |
FR2403685B1 (fr) | 1983-11-25 |
DE2840704B2 (de) | 1981-06-04 |
US4183020A (en) | 1980-01-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |