JPS61174200U - - Google Patents

Info

Publication number
JPS61174200U
JPS61174200U JP1985056823U JP5682385U JPS61174200U JP S61174200 U JPS61174200 U JP S61174200U JP 1985056823 U JP1985056823 U JP 1985056823U JP 5682385 U JP5682385 U JP 5682385U JP S61174200 U JPS61174200 U JP S61174200U
Authority
JP
Japan
Prior art keywords
transistor
circuit
collector
emitter
pulse
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
Application number
JP1985056823U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0412636Y2 (US07655688-20100202-C00086.png
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.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1985056823U priority Critical patent/JPH0412636Y2/ja
Priority to US06/853,179 priority patent/US4739226A/en
Publication of JPS61174200U publication Critical patent/JPS61174200U/ja
Application granted granted Critical
Publication of JPH0412636Y2 publication Critical patent/JPH0412636Y2/ja
Expired legal-status Critical Current

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
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/04—Controlling
    • H05B39/041—Controlling the light-intensity of the source
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
JP1985056823U 1985-04-18 1985-04-18 Expired JPH0412636Y2 (US07655688-20100202-C00086.png)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1985056823U JPH0412636Y2 (US07655688-20100202-C00086.png) 1985-04-18 1985-04-18
US06/853,179 US4739226A (en) 1985-04-18 1986-04-17 Dimming circuit having switching transistor protection means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985056823U JPH0412636Y2 (US07655688-20100202-C00086.png) 1985-04-18 1985-04-18

Publications (2)

Publication Number Publication Date
JPS61174200U true JPS61174200U (US07655688-20100202-C00086.png) 1986-10-29
JPH0412636Y2 JPH0412636Y2 (US07655688-20100202-C00086.png) 1992-03-26

Family

ID=13038093

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985056823U Expired JPH0412636Y2 (US07655688-20100202-C00086.png) 1985-04-18 1985-04-18

Country Status (2)

Country Link
US (1) US4739226A (US07655688-20100202-C00086.png)
JP (1) JPH0412636Y2 (US07655688-20100202-C00086.png)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012069398A (ja) * 2010-09-24 2012-04-05 Panasonic Corp 調光装置
CN102740554A (zh) * 2011-04-13 2012-10-17 Tdk株式会社 发光元件驱动装置
JP2014232605A (ja) * 2013-05-28 2014-12-11 三菱電機株式会社 点灯装置、照明装置および点灯装置の異常検知方法

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0307065A3 (en) * 1987-09-09 1989-08-30 Plaser Light Corp. Driving of discharge lamp
JPH059840Y2 (US07655688-20100202-C00086.png) * 1987-09-17 1993-03-10
US4841198A (en) * 1987-10-19 1989-06-20 Nartron Corporation Head lamp control method and apparatus, with PWM output regulation
JPH01172034A (ja) * 1987-12-28 1989-07-06 Aisin Aw Co Ltd 電子制御装置におけるランプ出力保護回路
US5498934A (en) * 1989-09-22 1996-03-12 Nilssen; Ole K. Electronic flashlight
DE3934421C1 (en) * 1989-10-14 1991-03-21 Loewe Opta Gmbh, 8640 Kronach, De Protective circuit for circuitry with light indicator in motor vehicle - has transistor breaking current flow in dependence on information voltage from resistor measuring current
US4987348A (en) * 1989-12-15 1991-01-22 North American Philips Corporation Bilevel current limiter
ATE109319T1 (de) * 1990-04-17 1994-08-15 Siemens Ag Vorrichtung zur stufenlosen steuerung elektrischer verbraucher nach dem phasenanschnittprinzip, insbesondere helligkeitsregler und verwendung einer solchen vorrichtung.
US5053677A (en) * 1990-05-03 1991-10-01 Navistar International Transportation Corp. Parking lamp operating system
US5285060A (en) * 1992-12-15 1994-02-08 Donnelly Corporation Display for automatic rearview mirror
US5748428A (en) * 1995-07-28 1998-05-05 United Technologies Automotive, Inc. Pulse width modulation and protection circuit
US5646485A (en) * 1995-12-14 1997-07-08 General Motors Corporation Motor vehicle daytime running light system having buck switch mode converter
DE19608649C1 (de) * 1996-03-06 1997-05-28 Bosch Gmbh Robert Anordnung zum Erkennen der Zündung einer Hochdruck-Gasentladungslampe
US6653789B2 (en) 2001-03-26 2003-11-25 Truck-Lite Co., Inc. Multiregulator circuit and lamp
DE102004003844A1 (de) 2004-01-26 2005-08-11 Schefenacker Vision Systems Germany Gmbh & Co. Kg Verfahren zum Ansteuern wenigstens eines Leuchtmittels sowie Ansteuerschaltung zur Durchführung eines solchen Verfahrens
US7675245B2 (en) * 2007-01-04 2010-03-09 Allegro Microsystems, Inc. Electronic circuit for driving a diode load
US7540641B2 (en) * 2007-02-08 2009-06-02 Ford Global Technologies, Llc Apparatus and method for dimming function to control LED intensity
US20080191626A1 (en) * 2007-02-08 2008-08-14 Ford Global Technologies, Llc Lighting system
WO2009064682A2 (en) 2007-11-16 2009-05-22 Allegro Microsystems, Inc. Electronic circuits for driving series connected light emitting diode strings
US7999487B2 (en) * 2008-06-10 2011-08-16 Allegro Microsystems, Inc. Electronic circuit for driving a diode load with a predetermined average current
US8692482B2 (en) 2010-12-13 2014-04-08 Allegro Microsystems, Llc Circuitry to control a switching regulator
US9265104B2 (en) 2011-07-06 2016-02-16 Allegro Microsystems, Llc Electronic circuits and techniques for maintaining a consistent power delivered to a load
US9155156B2 (en) 2011-07-06 2015-10-06 Allegro Microsystems, Llc Electronic circuits and techniques for improving a short duty cycle behavior of a DC-DC converter driving a load
US8957607B2 (en) 2012-08-22 2015-02-17 Allergo Microsystems, LLC DC-DC converter using hysteretic control and associated methods
US9144126B2 (en) 2012-08-22 2015-09-22 Allegro Microsystems, Llc LED driver having priority queue to track dominant LED channel
US8994279B2 (en) 2013-01-29 2015-03-31 Allegro Microsystems, Llc Method and apparatus to control a DC-DC converter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55155916U (US07655688-20100202-C00086.png) * 1979-04-25 1980-11-10

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1198253B (de) * 1962-11-21 1965-08-05 Bosch Gmbh Robert Blinklichtsignaleinrichtung
US3578983A (en) * 1968-06-25 1971-05-18 Nippon Denso Co Transistor-protecting circuit
DE2310448C3 (de) * 1973-03-02 1981-10-01 Robert Bosch Gmbh, 7000 Stuttgart Schaltungsanordnung zum Schutz eines elektronischen Schalters
JPS5512261Y2 (US07655688-20100202-C00086.png) * 1974-11-14 1980-03-17
US4158866A (en) * 1977-11-30 1979-06-19 Exxon Research & Engineering Co. Protection circuit for transistorized switch
JPS55155494A (en) * 1979-05-23 1980-12-03 Toyota Motor Co Ltd Dimmer
FR2458180A2 (fr) * 1979-05-30 1980-12-26 Telemecanique Electrique Commutateur a transistors, muni d'un dispositif de protection contre les surintensites, avec rearmement automatique
US4593233A (en) * 1981-07-24 1986-06-03 Lucas Industries Public Limited Company Lamp drive circuit
DE3216833A1 (de) * 1982-05-05 1983-11-10 Siemens AG, 1000 Berlin und 8000 München Schutzschaltung fuer einen schalttransistor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55155916U (US07655688-20100202-C00086.png) * 1979-04-25 1980-11-10

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012069398A (ja) * 2010-09-24 2012-04-05 Panasonic Corp 調光装置
CN102740554A (zh) * 2011-04-13 2012-10-17 Tdk株式会社 发光元件驱动装置
JP2012221869A (ja) * 2011-04-13 2012-11-12 Tdk Corp 発光素子駆動装置
CN102740554B (zh) * 2011-04-13 2015-04-01 Tdk株式会社 发光元件驱动装置
JP2014232605A (ja) * 2013-05-28 2014-12-11 三菱電機株式会社 点灯装置、照明装置および点灯装置の異常検知方法

Also Published As

Publication number Publication date
US4739226A (en) 1988-04-19
JPH0412636Y2 (US07655688-20100202-C00086.png) 1992-03-26

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