EP0453888A3 - Circuit for operating a fluorescent lamp - Google Patents
Circuit for operating a fluorescent lamp Download PDFInfo
- Publication number
- EP0453888A3 EP0453888A3 EP19910105758 EP91105758A EP0453888A3 EP 0453888 A3 EP0453888 A3 EP 0453888A3 EP 19910105758 EP19910105758 EP 19910105758 EP 91105758 A EP91105758 A EP 91105758A EP 0453888 A3 EP0453888 A3 EP 0453888A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- operating
- circuit
- fluorescent lamp
- fluorescent
- lamp
- 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.)
- Ceased
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
- H05B41/02—Details
- H05B41/04—Starting switches
- H05B41/042—Starting switches using semiconductor devices
- H05B41/044—Starting switches using semiconductor devices for lamp provided with pre-heating electrodes
-
- 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
- H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
- H05B41/3924—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by phase control, e.g. using a triac
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19904013360 DE4013360A1 (en) | 1990-04-26 | 1990-04-26 | CIRCUIT ARRANGEMENT FOR THE OPERATION OF A FLUORESCENT LAMP |
DE4013360 | 1990-04-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0453888A2 EP0453888A2 (en) | 1991-10-30 |
EP0453888A3 true EP0453888A3 (en) | 1993-01-13 |
Family
ID=6405165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19910105758 Ceased EP0453888A3 (en) | 1990-04-26 | 1991-04-11 | Circuit for operating a fluorescent lamp |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0453888A3 (en) |
DE (1) | DE4013360A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4330195A (en) * | 1980-02-19 | 1982-05-18 | Xerox Corporation | Multiple mode image processing apparatus and method |
DE59309600D1 (en) * | 1992-03-30 | 1999-07-01 | Otto Diez Elektromaschinenbau | Arrangement with a UV lamp |
GB2277415B (en) * | 1993-04-23 | 1997-12-03 | Matsushita Electric Works Ltd | Discharge lamp lighting device |
DE19625077B4 (en) * | 1996-06-22 | 2005-05-19 | Diehl Stiftung & Co. Kg | Fluorescent lamp ballast |
WO2003043387A1 (en) * | 2001-11-12 | 2003-05-22 | Koninklijke Philips Electronics N.V. | Circuit arrangement |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0046395A1 (en) * | 1980-08-18 | 1982-02-24 | THE GENERAL ELECTRIC COMPANY, p.l.c. | Dimming system for electric discharge lamps |
DE3327189A1 (en) * | 1983-07-28 | 1985-02-07 | Diehl GmbH & Co, 8500 Nürnberg | Circuit arrangement for the starting and brightness control of fluorescent lamps |
US4503359A (en) * | 1979-09-12 | 1985-03-05 | Hitachi Lighting, Ltd. | Discharge lamp lighting device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS561757B2 (en) * | 1974-03-30 | 1981-01-14 | ||
NL179622C (en) * | 1978-06-27 | 1986-10-01 | Philips Nv | DEVICE FOR IGNITION AND POWERING AT LEAST A GAS AND / OR VAPOR DISCHARGE TUBE. |
-
1990
- 1990-04-26 DE DE19904013360 patent/DE4013360A1/en active Granted
-
1991
- 1991-04-11 EP EP19910105758 patent/EP0453888A3/en not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4503359A (en) * | 1979-09-12 | 1985-03-05 | Hitachi Lighting, Ltd. | Discharge lamp lighting device |
EP0046395A1 (en) * | 1980-08-18 | 1982-02-24 | THE GENERAL ELECTRIC COMPANY, p.l.c. | Dimming system for electric discharge lamps |
DE3327189A1 (en) * | 1983-07-28 | 1985-02-07 | Diehl GmbH & Co, 8500 Nürnberg | Circuit arrangement for the starting and brightness control of fluorescent lamps |
Also Published As
Publication number | Publication date |
---|---|
EP0453888A2 (en) | 1991-10-30 |
DE4013360C2 (en) | 1993-04-08 |
DE4013360A1 (en) | 1991-11-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): CH DE ES FR GB IT LI NL SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): CH DE ES FR GB IT LI NL SE |
|
17P | Request for examination filed |
Effective date: 19921212 |
|
PUAF | Information related to the publication of a search report (a3 document) modified or deleted |
Free format text: ORIGINAL CODE: 0009199SEPU |
|
D17D | Deferred search report published (deleted) | ||
17Q | First examination report despatched |
Effective date: 19941202 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 19960603 |