GB2246034B - Circuit and method for improved dimming of gas discharge lamps - Google Patents
Circuit and method for improved dimming of gas discharge lampsInfo
- Publication number
- GB2246034B GB2246034B GB9026931A GB9026931A GB2246034B GB 2246034 B GB2246034 B GB 2246034B GB 9026931 A GB9026931 A GB 9026931A GB 9026931 A GB9026931 A GB 9026931A GB 2246034 B GB2246034 B GB 2246034B
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- gas discharge
- discharge lamps
- improved dimming
- dimming
- 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.)
- Expired - Lifetime
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
- H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
- H05B41/3927—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by pulse width modulation
-
- 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
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
- H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
- H05B41/2858—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal operating conditions
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/553,201 US5041763A (en) | 1989-12-22 | 1990-07-13 | Circuit and method for improved dimming of gas discharge lamps |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9026931D0 GB9026931D0 (en) | 1991-01-30 |
GB2246034A GB2246034A (en) | 1992-01-15 |
GB2246034B true GB2246034B (en) | 1994-12-14 |
Family
ID=24208510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9026931A Expired - Lifetime GB2246034B (en) | 1990-07-13 | 1990-12-12 | Circuit and method for improved dimming of gas discharge lamps |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP2727476B2 (fr) |
CA (1) | CA2032057C (fr) |
DE (1) | DE4039498B4 (fr) |
GB (1) | GB2246034B (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2269279A (en) * | 1992-08-01 | 1994-02-02 | Coolite Ltd | Fluorescent Tube Starting and Operating Circuit |
JP3543236B2 (ja) * | 1995-03-06 | 2004-07-14 | 株式会社キジマ | プッシュプルインバ−タ |
EP0765107B1 (fr) * | 1995-09-25 | 2001-12-19 | Koninklijke Philips Electronics N.V. | Circuit pour éviter les stries |
TW381409B (en) * | 1996-03-14 | 2000-02-01 | Mitsubishi Electric Corp | Discharging lamp lighting device |
FI101188B (fi) * | 1997-01-03 | 1998-04-30 | Helvar Oy | Purkauslampun elektroninen liitäntälaite, jossa on lampputehon mittaus DC-signaalin avulla |
GB0330019D0 (en) * | 2003-12-24 | 2004-01-28 | Powell David J | Apparatus and method for controlling discharge lights |
JP2010218963A (ja) | 2009-03-18 | 2010-09-30 | Panasonic Electric Works Co Ltd | 低圧放電灯点灯装置及びそれを用いた照明器具 |
US8167676B2 (en) | 2009-06-19 | 2012-05-01 | Vaxo Technologies, Llc | Fluorescent lighting system |
DE102010063867A1 (de) * | 2010-12-22 | 2012-06-28 | Tridonic Gmbh & Co Kg | Zündregelung und Zünderkennung von Gasentladungslampen |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB543136A (en) * | 1940-11-19 | 1942-02-11 | Smith & Sons Ltd S | Improvements in electric lighting apparatus |
GB1202505A (en) * | 1968-03-01 | 1970-08-19 | Matsushita Electronics Corp | Fluorescent lamp device |
GB2001811A (en) * | 1977-07-11 | 1979-02-07 | Energy Conversion Devices Inc | Gas discharge lamp control circuit |
GB2119184A (en) * | 1982-04-21 | 1983-11-09 | Helvar Oy | High frequency current supply method and apparatus |
EP0336642A1 (fr) * | 1988-04-05 | 1989-10-11 | Neon Dynamics Corporation | Alimentation pour tubes à décharge dans un gaz |
GB2232543A (en) * | 1989-05-18 | 1990-12-12 | Lutron Electronics Co | Fluorescent lamp dimming system |
GB2239568A (en) * | 1989-12-22 | 1991-07-03 | Lutron Electronics Co | Circuit for dimming gas discharge lamps without introducing striations |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1568310A (en) * | 1976-12-13 | 1980-05-29 | Kuroi Kosan Kk | Discharge lamp lighting devices |
FR2416617A1 (fr) * | 1978-02-07 | 1979-08-31 | Signaux Entr Electriques | Convertisseur pour l'alimentation de lampes a decharge, et plus generalement de lampes a arc, et son application aux projecteurs pour de telles lampes |
US4415839A (en) * | 1981-11-23 | 1983-11-15 | Lesea Ronald A | Electronic ballast for gaseous discharge lamps |
US4535399A (en) * | 1983-06-03 | 1985-08-13 | National Semiconductor Corporation | Regulated switched power circuit with resonant load |
JP2625793B2 (ja) * | 1987-12-28 | 1997-07-02 | 松下電器産業株式会社 | 蛍光灯点灯装置 |
NL8800288A (nl) * | 1988-02-08 | 1989-09-01 | Nedap Nv | Voorschakelapparaat voor een fluorescentielamp. |
-
1990
- 1990-12-11 DE DE4039498A patent/DE4039498B4/de not_active Expired - Lifetime
- 1990-12-12 GB GB9026931A patent/GB2246034B/en not_active Expired - Lifetime
- 1990-12-12 JP JP2410493A patent/JP2727476B2/ja not_active Expired - Lifetime
- 1990-12-12 CA CA002032057A patent/CA2032057C/fr not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB543136A (en) * | 1940-11-19 | 1942-02-11 | Smith & Sons Ltd S | Improvements in electric lighting apparatus |
GB1202505A (en) * | 1968-03-01 | 1970-08-19 | Matsushita Electronics Corp | Fluorescent lamp device |
GB2001811A (en) * | 1977-07-11 | 1979-02-07 | Energy Conversion Devices Inc | Gas discharge lamp control circuit |
GB2119184A (en) * | 1982-04-21 | 1983-11-09 | Helvar Oy | High frequency current supply method and apparatus |
EP0336642A1 (fr) * | 1988-04-05 | 1989-10-11 | Neon Dynamics Corporation | Alimentation pour tubes à décharge dans un gaz |
GB2232543A (en) * | 1989-05-18 | 1990-12-12 | Lutron Electronics Co | Fluorescent lamp dimming system |
GB2239568A (en) * | 1989-12-22 | 1991-07-03 | Lutron Electronics Co | Circuit for dimming gas discharge lamps without introducing striations |
Also Published As
Publication number | Publication date |
---|---|
GB9026931D0 (en) | 1991-01-30 |
JP2727476B2 (ja) | 1998-03-11 |
CA2032057A1 (fr) | 1992-01-14 |
DE4039498B4 (de) | 2006-06-29 |
GB2246034A (en) | 1992-01-15 |
JPH06302393A (ja) | 1994-10-28 |
CA2032057C (fr) | 2001-04-17 |
DE4039498A1 (de) | 1992-01-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PE20 | Patent expired after termination of 20 years |
Expiry date: 20101211 |