GB2117192B - Lamp control circuit - Google Patents

Lamp control circuit

Info

Publication number
GB2117192B
GB2117192B GB08205698A GB8205698A GB2117192B GB 2117192 B GB2117192 B GB 2117192B GB 08205698 A GB08205698 A GB 08205698A GB 8205698 A GB8205698 A GB 8205698A GB 2117192 B GB2117192 B GB 2117192B
Authority
GB
United Kingdom
Prior art keywords
control circuit
lamp control
lamp
circuit
control
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
Application number
GB08205698A
Other versions
GB2117192A (en
Inventor
Peter Strassheim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TRANSTAR Ltd
Original Assignee
TRANSTAR Ltd
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 TRANSTAR Ltd filed Critical TRANSTAR Ltd
Priority to GB08205698A priority Critical patent/GB2117192B/en
Publication of GB2117192A publication Critical patent/GB2117192A/en
Application granted granted Critical
Publication of GB2117192B publication Critical patent/GB2117192B/en
Expired legal-status Critical Current

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
    • H05B41/26—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
GB08205698A 1982-02-26 1982-02-26 Lamp control circuit Expired GB2117192B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08205698A GB2117192B (en) 1982-02-26 1982-02-26 Lamp control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08205698A GB2117192B (en) 1982-02-26 1982-02-26 Lamp control circuit

Publications (2)

Publication Number Publication Date
GB2117192A GB2117192A (en) 1983-10-05
GB2117192B true GB2117192B (en) 1986-01-02

Family

ID=10528635

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08205698A Expired GB2117192B (en) 1982-02-26 1982-02-26 Lamp control circuit

Country Status (1)

Country Link
GB (1) GB2117192B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4999547A (en) 1986-09-25 1991-03-12 Innovative Controls, Incorporated Ballast for high pressure sodium lamps having constant line and lamp wattage

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145587B (en) * 1983-08-25 1987-06-10 Lutron Electronics Co Gas discharging lamp dimming system
NL185746B (en) * 1984-11-09 1990-02-01 Maars Holding Bv DEVICE FOR DEPENDING ON AMBIENT LIGHT FROM ONE LOW-FREQUENT AC VOLTAGE SOURCE OF ONE OR MORE FLUORESCENT LAMPS.
GB8522778D0 (en) * 1985-09-14 1985-10-16 Contrology Ltd Lamp supply circuit
US4873471A (en) * 1986-03-28 1989-10-10 Thomas Industries Inc. High frequency ballast for gaseous discharge lamps
WO1987007996A1 (en) * 1986-06-19 1987-12-30 Innovative Controls, Inc. A ballast for systems having multiple high-intensity discharge lamps
US4887007A (en) * 1987-02-18 1989-12-12 U.S. Philips Corporation DC-AC converter for supplying a gas and/or vapour discharge lamp
DE3805159A1 (en) * 1988-02-16 1989-08-24 Semperlux Gmbh Electronic ballast device
GB8822195D0 (en) * 1988-09-21 1988-10-26 W J Parry Nottm Ltd Improvements in/related to electronic ballast circuits
GB8829844D0 (en) * 1988-12-21 1989-02-15 Yazdanian Sirous Control of fluorescent lights etc
DE3925899A1 (en) * 1989-08-04 1991-02-07 Zumtobel Ag ELECTRONIC CONTROLLER FOR GAS DISCHARGE LAMPS
GB2298749B (en) * 1994-03-04 1998-01-07 Int Rectifier Corp Electronic ballasts for gas discharge lamps
SG68587A1 (en) * 1996-07-27 1999-11-16 Singapore Productivity And Sta An electronic ballast circuit
US6710993B1 (en) * 2000-11-27 2004-03-23 Koninklijke Philips Electronics N.V. Method and apparatus for providing overload protection for a circuit
US6504321B2 (en) * 2001-02-06 2003-01-07 Koninklijke Philips Electronics N.V. Universal hardware/software feedback control for high-frequency signals
WO2002067636A1 (en) * 2001-02-20 2002-08-29 Noontek Limited A digital lamp controller for low frequency operation
US6639368B2 (en) * 2001-07-02 2003-10-28 Koninklijke Philips Electronics N.V. Programmable PWM module for controlling a ballast

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1228642A (en) * 1967-05-24 1971-04-15
US3619716A (en) * 1969-07-23 1971-11-09 Lutron Electronics Co High-frequency fluorescent tube lighting circuit and ac driving circuit therefor
GB1486812A (en) * 1973-09-03 1977-09-28 Nz Inventions Dev Authority Waveform synthesis using switching circuits
GB1508225A (en) * 1975-05-03 1978-04-19 Rohr Industries Inc Multi-phase inverter
FI772438A (en) * 1976-09-09 1978-03-10 Evers Poul Hahn FOERFARANDE FOER REGLERING AV I VAEXELSTROEMNAETET TILL FOERBRUKAREN MATAD ELEKTRICITETSEFFEKT OCH ANORDNING FOER UTFOERANDE AV FOERFARANDET
US4158793A (en) * 1977-07-11 1979-06-19 Lewis Gary D Gas discharge lamp control circuit
FR2416617A1 (en) * 1978-02-07 1979-08-31 Signaux Entr Electriques CONVERTER FOR THE POWER SUPPLY OF DISCHARGE LAMPS, AND MORE GENERALLY OF ARC LAMPS, AND ITS APPLICATION TO PROJECTORS FOR SUCH LAMPS
CA1112295A (en) * 1978-03-31 1981-11-10 Nabil K. Takla Programmable lighting control system
US4170747A (en) * 1978-09-22 1979-10-09 Esquire, Inc. Fixed frequency, variable duty cycle, square wave dimmer for high intensity gaseous discharge lamp
JPS5837484B2 (en) * 1979-09-25 1983-08-16 日産自動車株式会社 Automotive electronic meter brightness control device
GB2085243B (en) * 1980-09-03 1984-11-21 Cheltenham Induction Heating L Apparatus for driving a heating load circuit
CA1197280A (en) * 1981-05-01 1985-11-26 Norihiro Suenaga Multiplier power supply for pulse laser

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4999547A (en) 1986-09-25 1991-03-12 Innovative Controls, Incorporated Ballast for high pressure sodium lamps having constant line and lamp wattage

Also Published As

Publication number Publication date
GB2117192A (en) 1983-10-05

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee