DE69011881D1 - Vorwärtsgekoppelte Darlingtonschaltung mit verminderter NPN-Rückwärts-Betaempfindlichkeit. - Google Patents

Vorwärtsgekoppelte Darlingtonschaltung mit verminderter NPN-Rückwärts-Betaempfindlichkeit.

Info

Publication number: DE69011881D1
Authority: DE; Germany
Prior art keywords: darlington; reduced; feedforward circuit; reverse beta; npn
Prior art date: 1989-01-26
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 - Fee Related

Application number

DE69011881T

Other languages

English (en)

Other versions

DE69011881T2 (de

Inventor

Michael E Wright

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

National Semiconductor Corp

Original Assignee

National Semiconductor Corp

Priority date (The priority date 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 date listed.)

1989-01-26

Filing date

1990-01-19

Publication date

1994-10-06

1990-01-19 Application filed by National Semiconductor Corp filed Critical National Semiconductor Corp

1994-10-06 Publication of DE69011881D1 publication Critical patent/DE69011881D1/de

1995-04-20 Application granted granted Critical

1995-04-20 Publication of DE69011881T2 publication Critical patent/DE69011881T2/de

2010-01-20 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Links

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
- H03F3/3432—Dc amplifiers in which all stages are dc-coupled with semiconductor devices only with bipolar transistors
- H03F3/3435—Dc amplifiers in which all stages are dc-coupled with semiconductor devices only with bipolar transistors using Darlington amplifiers

DE69011881T 1989-01-26 1990-01-19 Vorwärtsgekoppelte Darlingtonschaltung mit verminderter NPN-Rückwärts-Betaempfindlichkeit. Expired - Fee Related DE69011881T2 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US07/302,502 US4922129A (en)	1989-01-26	1989-01-26	Feed forward darlington circuit with reduced NPN reverse beta sensitivity

Publications (2)

Publication Number	Publication Date
DE69011881D1 true DE69011881D1 (de)	1994-10-06
DE69011881T2 DE69011881T2 (de)	1995-04-20

Family

ID=23168003

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE69011881T Expired - Fee Related DE69011881T2 (de)	1989-01-26	1990-01-19	Vorwärtsgekoppelte Darlingtonschaltung mit verminderter NPN-Rückwärts-Betaempfindlichkeit.

Country Status (5)

Country	Link
US (1)	US4922129A (de)
EP (1)	EP0379984B1 (de)
JP (1)	JP3008952B2 (de)
CA (1)	CA1294676C (de)
DE (1)	DE69011881T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5134323A (en) *	1990-08-03	1992-07-28	Congdon James E	Three terminal noninverting transistor switch
US6107806A (en) *	1997-07-30	2000-08-22	Candescent Technologies Corporation	Device for magnetically sensing current in plate structure
US6861909B1 (en) *	2002-06-17	2005-03-01	Sirenza Microdevices, Inc.	High voltage-wide band amplifier
US6693478B1 (en) *	2002-08-09	2004-02-17	Texas Instruments Incorporated	System and method for implementing soft power up

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5516564A (en) *	1978-07-24	1980-02-05	Hitachi Ltd	Transistor amplifier circuit
DE2947599A1 (de) *	1979-11-26	1981-05-27	Siemens AG, 1000 Berlin und 8000 München	Monolithisch integrierbare halbleiterschaltung
US4542399A (en) *	1983-02-22	1985-09-17	National Semiconductor Corporation	Feed forward Darlington circuit
JPS6142851A (ja) *	1984-08-02	1986-03-01	Matsushita Electronics Corp	螢光ランプ
US4725741A (en) *	1985-11-13	1988-02-16	Sundstrand Corporation	Drive circuit for fast switching of Darlington-connected transistors

1989
- 1989-01-26 US US07/302,502 patent/US4922129A/en not_active Expired - Lifetime
- 1989-09-29 CA CA000614690A patent/CA1294676C/en not_active Expired - Fee Related
1990
- 1990-01-19 EP EP90101063A patent/EP0379984B1/de not_active Expired - Lifetime
- 1990-01-19 DE DE69011881T patent/DE69011881T2/de not_active Expired - Fee Related
- 1990-01-25 JP JP2013748A patent/JP3008952B2/ja not_active Expired - Fee Related

Also Published As

Publication number	Publication date
EP0379984A2 (de)	1990-08-01
CA1294676C (en)	1992-01-21
EP0379984A3 (de)	1991-02-06
JPH02237311A (ja)	1990-09-19
EP0379984B1 (de)	1994-08-31
US4922129A (en)	1990-05-01
JP3008952B2 (ja)	2000-02-14
DE69011881T2 (de)	1995-04-20

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Legal Events

Date	Code	Title	Description
1995-09-28	8364	No opposition during term of opposition
2008-11-20	8339	Ceased/non-payment of the annual fee