GB8503979D0 - Light controller - Google Patents

Light controller

Info

Publication number
GB8503979D0
GB8503979D0 GB858503979A GB8503979A GB8503979D0 GB 8503979 D0 GB8503979 D0 GB 8503979D0 GB 858503979 A GB858503979 A GB 858503979A GB 8503979 A GB8503979 A GB 8503979A GB 8503979 D0 GB8503979 D0 GB 8503979D0
Authority
GB
United Kingdom
Prior art keywords
light controller
controller
light
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.)
Granted
Application number
GB858503979A
Other versions
GB2154342A (en
GB2154342B (en
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.)
Helvar Oy AB
Original Assignee
Helvar Oy AB
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 Helvar Oy AB filed Critical Helvar Oy AB
Publication of GB8503979D0 publication Critical patent/GB8503979D0/en
Publication of GB2154342A publication Critical patent/GB2154342A/en
Application granted granted Critical
Publication of GB2154342B publication Critical patent/GB2154342B/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
    • H05B41/36—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
GB08503979A 1984-02-17 1985-02-15 Discharge lamp control circuit Expired GB2154342B (en)

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 (3)

Publication Number Publication Date
GB8503979D0 true GB8503979D0 (en) 1985-03-20
GB2154342A GB2154342A (en) 1985-09-04
GB2154342B GB2154342B (en) 1987-04-29

Family

ID=8518566

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08503979A Expired GB2154342B (en) 1984-02-17 1985-02-15 Discharge lamp control circuit

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3783551T2 (en) * 1986-10-17 1993-07-15 Toshiba Kawasaki Kk POWER SUPPLY DEVICE 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
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
US6043611A (en) * 1997-04-10 2000-03-28 Philips Electronics North America Corporation Dimmable compact fluorescent lamp
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

Also Published As

Publication number Publication date
SE8500634L (en) 1985-08-18
DE3504428A1 (en) 1985-09-12
GB2154342A (en) 1985-09-04
SE8500634D0 (en) 1985-02-12
FI840650A0 (en) 1984-02-17
FI68747C (en) 1985-10-10
GB2154342B (en) 1987-04-29
FI68747B (en) 1985-06-28

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Legal Events

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