HK75996A - Circuit arrangement - Google Patents

Circuit arrangement Download PDF

Info

Publication number
HK75996A
HK75996A HK75996A HK75996A HK75996A HK 75996 A HK75996 A HK 75996A HK 75996 A HK75996 A HK 75996A HK 75996 A HK75996 A HK 75996A HK 75996 A HK75996 A HK 75996A
Authority
HK
Hong Kong
Prior art keywords
frequency
lamp
circuit arrangement
modulation
circuitry
Prior art date
Application number
HK75996A
Other languages
English (en)
French (fr)
Inventor
Willem Denneman Jan
Urbanus Konings Leonardus
Original Assignee
Koninklijke Philips Electronics N.V.
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 Koninklijke Philips Electronics N.V. filed Critical Koninklijke Philips Electronics N.V.
Publication of HK75996A publication Critical patent/HK75996A/en

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
    • 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
    • H05B41/3928—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by pulse width modulation for high-pressure lamps, e.g. high-intensity discharge lamps, high-pressure mercury or sodium lamps
    • 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
    • H05B41/3925—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by frequency variation
    • 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

Landscapes

  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Contacts (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Amplifiers (AREA)
  • Burglar Alarm Systems (AREA)
  • Pens And Brushes (AREA)

Claims (2)

  1. Geeignete Schaltungsanordnung zum Betreiben einer Niederdruckquecksilberdampfentladungslampe (IV) mit Hilfe eines pulsierenden Hf-Stroms, mit folgenden Elementen:
    - Schaltungen (I) zum Erzeugen des pulsierenden Hf-Stroms mit einer Amplitude A aus einer Speisespannung,
    - einem Modulator (II) zum Modulieren des pulsierenden Hf-Stroms in eine Rechteckform mit einer Modulationsfrequenz f und einem Tastverhältnis DC,
    dadurch gekennzeichnet, daß die Schaltungsanordnung außerdem versehen ist mit    - Schaltungen (VI) zum einstellen der Modulationsfrequenz f.
  2. Schaltungsanordnung nach Anspruch 1, dadurch gekennzeichnet, daß die Schaltungsanordnung mit Schaltungen (III) zum Einstellen der Amplitude A des im wesentlichen rechtreckig modulierten pulsierenden Hf-Stroms versehen ist.
HK75996A 1990-01-29 1996-05-02 Circuit arrangement HK75996A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL9000199 1990-01-29

Publications (1)

Publication Number Publication Date
HK75996A true HK75996A (en) 1996-05-10

Family

ID=19856488

Family Applications (1)

Application Number Title Priority Date Filing Date
HK75996A HK75996A (en) 1990-01-29 1996-05-02 Circuit arrangement

Country Status (9)

Country Link
US (2) US5166580A (de)
EP (1) EP0439862B1 (de)
JP (1) JP3092955B2 (de)
KR (1) KR0182294B1 (de)
AT (1) ATE120066T1 (de)
DE (1) DE69017882T2 (de)
ES (1) ES2071752T3 (de)
FI (1) FI100161B (de)
HK (1) HK75996A (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5404094A (en) * 1994-03-18 1995-04-04 Holophane Lighting, Inc. Wide input power supply and method of converting therefor
US5530321A (en) * 1995-02-21 1996-06-25 Sears; Lawrence M. Power supply for a gas discharge lamp
US6784867B1 (en) 2000-11-16 2004-08-31 Koninklijke Philips Electronics N.V. Voltage-fed push LLC resonant LCD backlighting inverter circuit
US20050132211A1 (en) * 2003-08-01 2005-06-16 Mamoon Yunus Java cryptographic engine to crypto acceleration integration
JP4501748B2 (ja) 2005-03-28 2010-07-14 パナソニック電工株式会社 無電極放電灯点灯装置、および照明器具

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156166A (en) * 1976-08-18 1979-05-22 Royal Industries, Inc. Method and apparatus for saving energy
GB1575834A (en) * 1977-06-13 1980-10-01 Gen Electric High pressure sodium vapour lamps and method of operating the same
US4170747A (en) * 1978-09-22 1979-10-09 Esquire, Inc. Fixed frequency, variable duty cycle, square wave dimmer for high intensity gaseous discharge lamp
US4219760A (en) * 1979-03-22 1980-08-26 General Electric Company SEF Lamp dimming
JPS5694372A (en) * 1979-12-27 1981-07-30 Canon Inc Exposure control device
US4358716A (en) * 1980-04-14 1982-11-09 White Castle System, Inc. Adjustable electrical power control for gas discharge lamps and the like
FR2506554A1 (fr) * 1981-05-20 1982-11-26 Signaux Entr Electriques Dispositif d'alimentation electronique pour lampes a decharge
US4777409A (en) * 1984-03-23 1988-10-11 Tracy Stanley J Fluorescent lamp energizing circuit
US4885508A (en) * 1986-10-31 1989-12-05 Mole-Richardson Company System for controlling the intensity of high power lights
DE3641070A1 (de) * 1986-12-02 1988-06-16 Philips Patentverwaltung Schaltungsanordnung zum betrieb von hochdruck-gasentladungslampen mittels eines impulsfoermigen versorgungsstromes
DE3729383A1 (de) * 1987-09-03 1989-03-16 Philips Patentverwaltung Schaltungsanordnung zum starten einer hochdruckgasentladungslampe
US5003231A (en) * 1989-04-12 1991-03-26 Peroxidation Systems, Inc. Adaptive resonant ballast for discharge lamps

Also Published As

Publication number Publication date
JPH04212297A (ja) 1992-08-03
FI910391A0 (fi) 1991-01-25
DE69017882D1 (de) 1995-04-20
ES2071752T3 (es) 1995-07-01
FI100161B (fi) 1997-09-30
EP0439862B1 (de) 1995-03-15
FI910391L (fi) 1991-07-30
US5164638A (en) 1992-11-17
KR0182294B1 (ko) 1999-05-15
ATE120066T1 (de) 1995-04-15
EP0439862A1 (de) 1991-08-07
US5166580A (en) 1992-11-24
DE69017882T2 (de) 1995-10-12
KR910015198A (ko) 1991-08-31
JP3092955B2 (ja) 2000-09-25

Similar Documents

Publication Publication Date Title
US5150014A (en) Lamp ballast control circuit and method
EP0439863B1 (de) Schaltanordnung
EP0658921B1 (de) Niederdruck Quecksilber Entladungslampe
EP0439864B1 (de) Schaltanordnung
US20090200954A1 (en) Color control of a discharge lamp during dimming
EP0511304B1 (de) Integrierte hochfrequenzlichtquelle für grossbildanzeigevorrichtung
CN1216211A (zh) 电路装置
EP0439862B1 (de) Schaltanordnung
NL9000202A (nl) Schakelinrichting.
JPH07272886A (ja) 可変光色蛍光ランプの点灯装置

Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)