SE8500634D0 - LIGHT ADJUSTMENT LIGHT ADJUSTMENT DEVICE WITH ELECTRONIC LOAD - Google Patents
LIGHT ADJUSTMENT LIGHT ADJUSTMENT DEVICE WITH ELECTRONIC LOADInfo
- Publication number
- SE8500634D0 SE8500634D0 SE8500634A SE8500634A SE8500634D0 SE 8500634 D0 SE8500634 D0 SE 8500634D0 SE 8500634 A SE8500634 A SE 8500634A SE 8500634 A SE8500634 A SE 8500634A SE 8500634 D0 SE8500634 D0 SE 8500634D0
- Authority
- SE
- Sweden
- Prior art keywords
- voltage
- comparator
- light adjustment
- control
- ballast
- Prior art date
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>
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 true SE8500634D0 (en) | 1985-02-12 |
SE8500634L 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)
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 | |
US5604411A (en) * | 1995-03-31 | 1997-02-18 | Philips Electronics North America Corporation | Electronic ballast having a triac dimming filter with preconditioner offset control |
US5559395A (en) * | 1995-03-31 | 1996-09-24 | Philips Electronics North America Corporation | Electronic ballast with interface circuitry for phase angle dimming control |
US6043611A (en) * | 1997-04-10 | 2000-03-28 | Philips Electronics North America Corporation | Dimmable compact fluorescent lamp |
US5982110A (en) * | 1997-04-10 | 1999-11-09 | Philips Electronics North America Corporation | Compact fluorescent lamp with overcurrent protection |
US6011357A (en) * | 1997-04-10 | 2000-01-04 | Philips Electronics North America Corporation | Triac dimmable compact fluorescent lamp with low power factor |
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 |
-
1984
- 1984-02-17 FI FI840650A patent/FI68747C/en not_active IP Right Cessation
-
1985
- 1985-02-09 DE DE19853504428 patent/DE3504428A1/en not_active Withdrawn
- 1985-02-12 SE SE8500634A patent/SE8500634L/en not_active Application Discontinuation
- 1985-02-15 GB GB08503979A patent/GB2154342B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FI68747C (en) | 1985-10-10 |
FI840650A0 (en) | 1984-02-17 |
DE3504428A1 (en) | 1985-09-12 |
SE8500634L (en) | 1985-08-18 |
GB2154342A (en) | 1985-09-04 |
GB8503979D0 (en) | 1985-03-20 |
FI68747B (en) | 1985-06-28 |
GB2154342B (en) | 1987-04-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
Ref document number: 8500634-4 Effective date: 19900901 |