NO912637D0 - LIGHT BRIGHTNESS CONTROL CIRCUIT. - Google Patents

LIGHT BRIGHTNESS CONTROL CIRCUIT.

Info

Publication number
NO912637D0
NO912637D0 NO912637A NO912637A NO912637D0 NO 912637 D0 NO912637 D0 NO 912637D0 NO 912637 A NO912637 A NO 912637A NO 912637 A NO912637 A NO 912637A NO 912637 D0 NO912637 D0 NO 912637D0
Authority
NO
Norway
Prior art keywords
circuit
voltage
low
synchronous
propagation time
Prior art date
Application number
NO912637A
Other languages
Norwegian (no)
Other versions
NO912637L (en
NO300710B1 (en
Inventor
Thomas Schmid
Original Assignee
Zumtobel Ag
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 by Zumtobel Ag filed Critical Zumtobel Ag
Publication of NO912637D0 publication Critical patent/NO912637D0/en
Publication of NO912637L publication Critical patent/NO912637L/en
Publication of NO300710B1 publication Critical patent/NO300710B1/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/006—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for non-insulated low-voltage distribution systems, e.g. low-voltage halogen-lamp system
    • 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
    • H05B39/044—Controlling the light-intensity of the source continuously
    • H05B39/045—Controlling the light-intensity of the source continuously with high-frequency bridge converters
    • 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

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Television Receiver Circuits (AREA)
  • Handcart (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Inverter Devices (AREA)
  • Air Bags (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)

Abstract

A dimmer circuit for a load circuit having a low-voltage halogen light or lights (NV) and a power transformer (Tr) or power transmitter connected upstream thereof, for variation of the real power taken from an AC voltage supply and emitted to a load circuit (Tr, NV) has: a high-frequency AC voltage generator (20) which emits an output AC voltage (uW) from an essentially smoothed or unsmoothed, rectified low-frequency intermediate circuit voltage (uN) to the load circuit (Tr, NV) and a variable delay switching element or a digital/analog propagation time element, in particular a lowpass filter (PT1) consisting of a variable resistor (R4, R5, P) and a synchronous capacitor (C1) in a series circuit. The circuit arrangement is intended to be designed such that an improved (in particular reduced in size) dimmer circuit permits continuous dimming control between zero and maximum of, in particular, low-voltage halogen lamps. This is achieved according to the invention by providing a synchronous circuit (V5, V7, TH; R16, V13) which is connected on the output side to the delay switching element, to the propagation time element or to the synchronous capacitor (C1) of the lowpass filter (PT1) and, on the input side, is supplied from the rectified intermediate circuit voltage (uN) or the AC voltage supply. <IMAGE>
NO912637A 1990-07-06 1991-07-05 Lamp brightness control circuit NO300710B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4021640A DE4021640A1 (en) 1990-07-06 1990-07-06 BRIGHTNESS CONTROL CIRCUIT ARRANGEMENT

Publications (3)

Publication Number Publication Date
NO912637D0 true NO912637D0 (en) 1991-07-05
NO912637L NO912637L (en) 1992-01-07
NO300710B1 NO300710B1 (en) 1997-07-07

Family

ID=6409832

Family Applications (1)

Application Number Title Priority Date Filing Date
NO912637A NO300710B1 (en) 1990-07-06 1991-07-05 Lamp brightness control circuit

Country Status (5)

Country Link
EP (1) EP0466031B1 (en)
AT (1) ATE125100T1 (en)
DE (2) DE4021640A1 (en)
FI (1) FI106356B (en)
NO (1) NO300710B1 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4201744C2 (en) * 1992-01-23 1997-12-11 Insta Elektro Gmbh & Co Kg Additional circuit in a switching power supply for low-voltage halogen lamps
KR940005192A (en) * 1992-08-26 1994-03-16 에프.제이.스미트 Circuit arrangement for incandescent lamp operation
DE4242120A1 (en) * 1992-08-28 1994-03-03 Tridonic Bauelemente Gmbh Dorn Automatic zero point detection
DE4228647A1 (en) * 1992-08-28 1994-03-03 Tridonic Bauelemente Gmbh Dorn Start-up circuit for electronic transformers
DE4228682A1 (en) * 1992-08-28 1994-03-03 Tridonic Bauelemente Gmbh Dorn Ballast for a gas discharge lamp with an inverter circuit
DE4238471C2 (en) * 1992-11-14 2001-05-31 Insta Elektro Gmbh & Co Kg Protection circuit with overcurrent and overvoltage detection in switching power supplies for AC and DC connection, especially for the operation of low-voltage halogen lamps
US5352958A (en) * 1992-11-19 1994-10-04 Cunningham David W Lighting control system dimmer module with plug-in electrical contacts
JP3531177B2 (en) * 1993-03-11 2004-05-24 ソニー株式会社 Compressed data recording apparatus and method, compressed data reproducing method
DE4333610A1 (en) * 1993-10-01 1995-04-06 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Circuit arrangement for operating low-voltage halogen incandescent lamps
DE4340672C2 (en) * 1993-11-30 1995-10-26 Epv Electronic Gmbh Dimmer circuit for a lighting current with low-loss power level
ATE169781T1 (en) * 1994-02-21 1998-08-15 Tridonic Bauelemente ELECTRONIC TRANSFORMER
DE4416400A1 (en) * 1994-05-09 1995-11-16 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Circuit arrangement for operating electric light bulbs
DE4416401A1 (en) * 1994-05-09 1995-11-16 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Circuit arrangement for operating electric lamps
DE19500615B4 (en) * 1995-01-11 2006-10-19 Tridonicatco Gmbh & Co. Kg Brightness control circuit for incandescent lamps
EP0752805A1 (en) * 1995-07-05 1997-01-08 MAGNETEK S.p.A. Electronic converter with thermal protection circuit
IL126967A (en) * 1998-11-09 2002-09-12 Lightech Electronics Ind Ltd Electronic transformer for lighting
DE102004018371A1 (en) * 2004-04-13 2005-11-03 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Electronic ballast with digital control of dimming operations
US7923934B2 (en) * 2007-10-31 2011-04-12 Techtronic Power Tools Technology Limited Battery-powered fluorescent lamp
CN101521978A (en) * 2008-02-29 2009-09-02 皇家飞利浦电子股份有限公司 Adjustable-light output circuit and electronic ballast used for a lamp
DE102012007450B4 (en) 2012-04-13 2024-02-22 Tridonic Gmbh & Co Kg Converter for a light source, LED converter and method for operating an LLC resonance converter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506318A (en) * 1983-04-22 1985-03-19 Nilssen Ole K Inverter with controllable RMS output voltage magnitude
GB2204191A (en) * 1987-02-25 1988-11-02 Xyxx Inc Lighting adaptor
DE3806909A1 (en) * 1988-03-03 1989-09-07 Beme Electronic Gmbh SWITCHING POWER SUPPLY

Also Published As

Publication number Publication date
NO912637L (en) 1992-01-07
FI913220A0 (en) 1991-07-03
FI106356B (en) 2001-01-15
DE59105963D1 (en) 1995-08-17
ATE125100T1 (en) 1995-07-15
EP0466031B1 (en) 1995-07-12
DE4021640A1 (en) 1992-01-09
NO300710B1 (en) 1997-07-07
EP0466031A1 (en) 1992-01-15
FI913220A (en) 1992-01-07

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Legal Events

Date Code Title Description
MM1K Lapsed by not paying the annual fees

Free format text: LAPSED IN JANUARY 2003