GB8921325D0 - Electronic ballast circuits - Google Patents
Electronic ballast circuitsInfo
- Publication number
- GB8921325D0 GB8921325D0 GB898921325A GB8921325A GB8921325D0 GB 8921325 D0 GB8921325 D0 GB 8921325D0 GB 898921325 A GB898921325 A GB 898921325A GB 8921325 A GB8921325 A GB 8921325A GB 8921325 D0 GB8921325 D0 GB 8921325D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- electronic ballast
- ballast circuits
- circuits
- electronic
- ballast
- 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.)
- Withdrawn
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
- H05B41/295—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 and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
- H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
- H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
- H05B41/2985—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB888822195A GB8822195D0 (en) | 1988-09-21 | 1988-09-21 | Improvements in/related to electronic ballast circuits |
Publications (2)
Publication Number | Publication Date |
---|---|
GB8921325D0 true GB8921325D0 (en) | 1989-11-08 |
GB2224170A GB2224170A (en) | 1990-04-25 |
Family
ID=10644010
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB888822195A Pending GB8822195D0 (en) | 1988-09-21 | 1988-09-21 | Improvements in/related to electronic ballast circuits |
GB8921325A Withdrawn GB2224170A (en) | 1988-09-21 | 1989-09-21 | Electronic ballast circuit for discharge lamps |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB888822195A Pending GB8822195D0 (en) | 1988-09-21 | 1988-09-21 | Improvements in/related to electronic ballast circuits |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB8822195D0 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112753283A (en) * | 2018-07-26 | 2021-05-04 | 硅山有限公司 | Filtering LED lamp device |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5068570A (en) * | 1989-01-26 | 1991-11-26 | Koito Manufacturing Co., Ltd. | Lamp lighting circuit with an overload protection capability |
JP2587718B2 (en) * | 1990-10-01 | 1997-03-05 | 株式会社小糸製作所 | Lighting circuit for vehicle discharge lamps |
JPH0521182A (en) * | 1990-12-30 | 1993-01-29 | Toshiba Lighting & Technol Corp | Discharge lamp lighting device and luminaire |
JP3026681B2 (en) * | 1992-06-30 | 2000-03-27 | 三洋電機株式会社 | Fluorescent light control device |
GB2269279A (en) * | 1992-08-01 | 1994-02-02 | Coolite Ltd | Fluorescent Tube Starting and Operating Circuit |
AU3575395A (en) * | 1995-10-03 | 1997-04-28 | Sandor Pal | Improvements in or relating to an electronic ballast for fluorescent lamps |
US5796215A (en) * | 1996-01-29 | 1998-08-18 | International Rectifier Corporation | Soft start circuit for self-oscillating drivers |
US6008590A (en) * | 1996-05-03 | 1999-12-28 | Philips Electronics North America Corporation | Integrated circuit inverter control having a multi-function pin |
SG68587A1 (en) * | 1996-07-27 | 1999-11-16 | Singapore Productivity And Sta | An electronic ballast circuit |
ATE220849T1 (en) * | 1997-12-23 | 2002-08-15 | Tridonicatco Gmbh & Co Kg | ELECTRONIC BALLAST |
US8659233B2 (en) * | 2009-10-23 | 2014-02-25 | General Electric Company | Fluorescent lamp ballast with electronic preheat circuit |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE8005271L (en) * | 1980-07-18 | 1981-06-22 | Aos Metall Mek Verk | KIT AND DEVICE FOR ELIMINATING UNCOMFORTABILITY WHEN VIEWING X-RAY X-RAY FILM |
DE3266600D1 (en) * | 1981-02-21 | 1985-11-07 | Emi Plc Thorn | Lamp driver circuits |
US4464606A (en) * | 1981-03-25 | 1984-08-07 | Armstrong World Industries, Inc. | Pulse width modulated dimming arrangement for fluorescent lamps |
NL8102364A (en) * | 1981-05-14 | 1982-12-01 | Philips Nv | ELECTRICAL DEVICE FOR IGNITING AND POWERING ONE OF TWO PREHEATABLE ELECTRODES GAS AND / OR VAPOR DISCHARGE LAMP. |
GB2117192B (en) * | 1982-02-26 | 1986-01-02 | Transtar Limited | Lamp control circuit |
US4686428A (en) * | 1985-08-28 | 1987-08-11 | Innovative Controls, Incorporated | High intensity discharge lamp self-adjusting ballast system with current limiters and a current feedback loop |
US4717863A (en) * | 1986-02-18 | 1988-01-05 | Zeiler Kenneth T | Frequency modulation ballast circuit |
US4751398A (en) * | 1986-03-18 | 1988-06-14 | The Bodine Company | Lighting system for normal and emergency operation of high intensity discharge lamps |
US4704563A (en) * | 1986-05-09 | 1987-11-03 | General Electric Company | Fluorescent lamp operating circuit |
-
1988
- 1988-09-21 GB GB888822195A patent/GB8822195D0/en active Pending
-
1989
- 1989-09-21 GB GB8921325A patent/GB2224170A/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112753283A (en) * | 2018-07-26 | 2021-05-04 | 硅山有限公司 | Filtering LED lamp device |
CN112753283B (en) * | 2018-07-26 | 2024-02-27 | 硅山有限公司 | LED lamp |
Also Published As
Publication number | Publication date |
---|---|
GB8822195D0 (en) | 1988-10-26 |
GB2224170A (en) | 1990-04-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |