GB1257318A - - Google Patents
Info
- Publication number
- GB1257318A GB1257318A GB1257318DA GB1257318A GB 1257318 A GB1257318 A GB 1257318A GB 1257318D A GB1257318D A GB 1257318DA GB 1257318 A GB1257318 A GB 1257318A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- transistor
- current
- dependent
- nov
- 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
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/082—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
- H03K17/0826—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit in bipolar transistor switches
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7490367 | 1967-11-21 | ||
US9628770A | 1970-12-08 | 1970-12-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1257318A true GB1257318A (US20020051482A1-20020502-M00012.png) | 1971-12-15 |
Family
ID=26416068
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1257318D Expired GB1257318A (US20020051482A1-20020502-M00012.png) | 1967-11-21 | 1968-11-20 |
Country Status (3)
Country | Link |
---|---|
US (1) | US3678408A (US20020051482A1-20020502-M00012.png) |
DE (1) | DE1809570A1 (US20020051482A1-20020502-M00012.png) |
GB (1) | GB1257318A (US20020051482A1-20020502-M00012.png) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2250151B (en) * | 1990-07-30 | 1995-04-05 | Nad Electronics Limited | Power amplifier protection circuit |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3845405A (en) * | 1973-05-24 | 1974-10-29 | Rca Corp | Composite transistor device with over current protection |
DE2950700C2 (de) * | 1979-12-17 | 1986-01-16 | Brown, Boveri & Cie Ag, 6800 Mannheim | Anordnung zur Beeinflussung des Abschaltverhaltens von Transistorstufen |
JPS5765909A (en) * | 1980-10-13 | 1982-04-21 | Fujitsu Ltd | Line driver circuit having overcurrent protecting function |
DE3123918A1 (de) * | 1981-06-16 | 1983-01-05 | Siemens AG, 1000 Berlin und 8000 München | Halbleiterleistungselement mit schutzschaltung |
BE894437A (nl) * | 1982-09-20 | 1983-03-21 | Bell Telephone Mfg | Versterker en aan verwante schakelingen |
US4394703A (en) * | 1981-12-24 | 1983-07-19 | Gte Automatic Electric Labs Inc. | Load protecting arrangement |
JPS60126919A (ja) * | 1983-12-14 | 1985-07-06 | Toshiba Corp | ダ−リントントランジスタ回路 |
DE3420236A1 (de) * | 1984-05-30 | 1985-12-05 | Ifm Electronic Gmbh, 4300 Essen | Elektronisches, vorzugsweise beruehrungslos arbeitendes schaltgeraet |
DE3529827A1 (de) * | 1985-08-21 | 1987-03-05 | Ifm Electronic Gmbh | Elektronisches, vorzugsweise beruehrungslos arbeitendes schaltgeraet |
JP2751320B2 (ja) * | 1989-02-21 | 1998-05-18 | 日本電気株式会社 | エミッタホロワ回路 |
JP3904817B2 (ja) * | 2000-08-31 | 2007-04-11 | 株式会社ルネサステクノロジ | 電力増幅器モジュール |
US7262948B2 (en) * | 2005-12-02 | 2007-08-28 | Tellabs Operations, Inc. | Power switch with simple overload protection |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3262016A (en) * | 1962-08-21 | 1966-07-19 | United Aircraft Corp | Load protector |
US3500218A (en) * | 1967-06-01 | 1970-03-10 | Analog Devices Inc | Transistor complementary pair power amplifier with active current limiting means |
US3564338A (en) * | 1967-08-03 | 1971-02-16 | Fujitsu Ltd | Overvoltage and overcurrent protective circuit for a transistor amplifier |
-
1968
- 1968-11-18 DE DE19681809570 patent/DE1809570A1/de active Pending
- 1968-11-20 GB GB1257318D patent/GB1257318A/en not_active Expired
-
1970
- 1970-12-08 US US96287A patent/US3678408A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2250151B (en) * | 1990-07-30 | 1995-04-05 | Nad Electronics Limited | Power amplifier protection circuit |
Also Published As
Publication number | Publication date |
---|---|
DE1809570A1 (de) | 1969-06-26 |
US3678408A (en) | 1972-07-18 |
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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 |