SE8500634L - LIGHT ADJUSTMENT LIGHT ADJUSTMENT DEVICE WITH ELECTRONIC LOAD - Google Patents

LIGHT ADJUSTMENT LIGHT ADJUSTMENT DEVICE WITH ELECTRONIC LOAD

Info

Publication number
SE8500634L
SE8500634L SE8500634A SE8500634A SE8500634L SE 8500634 L SE8500634 L SE 8500634L SE 8500634 A SE8500634 A SE 8500634A SE 8500634 A SE8500634 A SE 8500634A SE 8500634 L SE8500634 L SE 8500634L
Authority
SE
Sweden
Prior art keywords
voltage
comparator
light adjustment
control
ballast
Prior art date
Application number
SE8500634A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE8500634D0 (en
Inventor
M Sairanen
Original Assignee
Helvar Oy
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 Helvar Oy filed Critical Helvar Oy
Publication of SE8500634D0 publication Critical patent/SE8500634D0/en
Publication of SE8500634L publication Critical patent/SE8500634L/en

Links

Classifications

    • 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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor

Landscapes

  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

A light controller for a discharge lamp (1) with an electronic ballast (2) is separate from the ballast, and is connected to control the mains voltage (4) supplied to the ballast. The controller has an output stage (5) connected in the mains voltage line and regulates the input power. A comparator (7) is connected to a control unit (6), the input of the comparator being provided with a control voltage (Uc) and a voltage depending on a phase angle controlled voltage (3). A device (9) regulates the control voltage (Uc) as well as a starting circuit (8) for switching on control voltage (Uc) in order to maintain constant the power taken up by the load despite mains voltage variations, the voltage depending on controlled voltage (3) is connected to comparator (7) through a circuit (10) simulating the electronic ballast (2). Initially, the starting circuit (8) supplies only a low voltage to the comparator (7). <IMAGE>
SE8500634A 1984-02-17 1985-02-12 LIGHT ADJUSTMENT LIGHT ADJUSTMENT DEVICE WITH ELECTRONIC LOAD SE8500634L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI840650A FI68747C (en) 1984-02-17 1984-02-17 LIGHT RELEASE FOR MEDICAL ELECTRONIC SYSTEMS FOR FORED LAMPS

Publications (2)

Publication Number Publication Date
SE8500634D0 SE8500634D0 (en) 1985-02-12
SE8500634L true SE8500634L (en) 1985-08-18

Family

ID=8518566

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8500634A SE8500634L (en) 1984-02-17 1985-02-12 LIGHT ADJUSTMENT LIGHT ADJUSTMENT DEVICE WITH ELECTRONIC LOAD

Country Status (4)

Country Link
DE (1) DE3504428A1 (en)
FI (1) FI68747C (en)
GB (1) GB2154342B (en)
SE (1) SE8500634L (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0264135B1 (en) * 1986-10-17 1993-01-13 Kabushiki Kaisha Toshiba Power supply system for discharge load
DE3729383A1 (en) * 1987-09-03 1989-03-16 Philips Patentverwaltung CIRCUIT ARRANGEMENT FOR STARTING A HIGH-PRESSURE DISCHARGE LAMP
DE4015397A1 (en) * 1990-05-14 1991-11-21 Hella Kg Hueck & Co CIRCUIT ARRANGEMENT FOR IGNITING AND OPERATING A HIGH PRESSURE DISCHARGE LAMP IN MOTOR VEHICLES
TW235383B (en) * 1991-04-04 1994-12-01 Philips Nv
US5559395A (en) * 1995-03-31 1996-09-24 Philips Electronics North America Corporation Electronic ballast with interface circuitry for phase angle dimming control
US5604411A (en) * 1995-03-31 1997-02-18 Philips Electronics North America Corporation Electronic ballast having a triac dimming filter with preconditioner offset control
US6011357A (en) * 1997-04-10 2000-01-04 Philips Electronics North America Corporation Triac dimmable compact fluorescent lamp with low power factor
US5982110A (en) * 1997-04-10 1999-11-09 Philips Electronics North America Corporation Compact fluorescent lamp with overcurrent protection
US6043611A (en) * 1997-04-10 2000-03-28 Philips Electronics North America Corporation Dimmable compact fluorescent lamp
DE102004050110A1 (en) * 2004-10-14 2006-04-27 Fab Consulting Gmbh Discharge lamp operating method for operating discharge lamps on single- or multiphase networks feeds a mains voltage to fluorescent lamp ballast/choke half-bridge drivers via a rectifier system

Also Published As

Publication number Publication date
DE3504428A1 (en) 1985-09-12
GB2154342B (en) 1987-04-29
FI68747B (en) 1985-06-28
GB2154342A (en) 1985-09-04
SE8500634D0 (en) 1985-02-12
FI68747C (en) 1985-10-10
FI840650A0 (en) 1984-02-17
GB8503979D0 (en) 1985-03-20

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Legal Events

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NAV Patent application has lapsed

Ref document number: 8500634-4

Effective date: 19900901