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GB1326392A - Fluorescent lamp and other circuits - Google Patents

Fluorescent lamp and other circuits

Info

Publication number
GB1326392A
GB1326392A GB5432770A GB1326392DA GB1326392A GB 1326392 A GB1326392 A GB 1326392A GB 5432770 A GB5432770 A GB 5432770A GB 1326392D A GB1326392D A GB 1326392DA GB 1326392 A GB1326392 A GB 1326392A
Authority
GB
United Kingdom
Prior art keywords
inverter
frequency
lamp
output voltage
elements
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
GB5432770A
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.)
Joy Global Industries Ltd
Original Assignee
Dobson Park Industries 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 Dobson Park Industries Ltd filed Critical Dobson Park Industries Ltd
Publication of GB1326392A publication Critical patent/GB1326392A/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
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/042—Starting switches using semiconductor devices
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/02—High frequency starting operation for fluorescent lamp
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/05—Starting and operating circuit for fluorescent lamp

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

1326392 Resistance-capacitor oscillators DOBSON PARK INDUSTRIES Ltd 8 Nov 1971 [14 Nov 1970] 54327/70 Heading H3T [Also in Division H2] A circuit arrangement for use with a device which requires to be conditioned before it is able to become conductive, such as a fluorescent lamp 12 having heatable electrodes 11, comprises an inductor 13 in series with, and a capacitor 14 in parallel with, the lamp, which two elements are arranged to be resonant at a predetermined frequency, the arrangement including a supply source in the form of an inverter, the inverter being arranged to have a low output voltage-say 30 volts-at the predetermined resonant frequency of the elements 13, 14 which frequency may be 1500 Hz, the inverter being provided with means such that it produces a high output voltage-say 110 volts at a frequency-say 1000 Hz-lower than the predetermined resonant frequency of the elements 13, 14. Thus at starting of the lamp the output voltage of the inverter is 30 volts at a frequency of 1500 Hz and since at this frequency the elements 13, 14 resonate, practically all the inverter output voltage is applied across the lamp 12 causing it to strike. When the output frequency of the inverter voltage drops to 1000 Hz the elements 13, 14 go out of resonance and although the inverter output voltage has risen to 110 most of this voltage is dissipated in the inductor 13, the potential difference across the lamp 12 being sufficient to maintain the conduction thereof. In one form (see Fig. 2) the inverter is in the form of an oscillator having a transistor 20, the collector load of which is in the form of a resistor 21 shunt by three phase shifting stages each comprising a capacitor 22 and a positive temperature dependent resistor 23. Thus as the resistors 23 warm up the output frequency of the inverter decreases and the collector voltage increases. The lamp 12 is supplied by the inverter through an amplifying transistor 27 and transformer 28. Resistors 24, 25 connect the base and emitter respectively of the transsistor 20 to earth and these may be made temperature responsive such that the increase in output voltage of the inverter takes place after the decrease in the output frequency.
GB5432770A 1970-11-14 1970-11-14 Fluorescent lamp and other circuits Expired GB1326392A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5432770 1970-11-14

Publications (1)

Publication Number Publication Date
GB1326392A true GB1326392A (en) 1973-08-08

Family

ID=10470638

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5432770A Expired GB1326392A (en) 1970-11-14 1970-11-14 Fluorescent lamp and other circuits

Country Status (5)

Country Link
US (1) US3710177A (en)
DE (1) DE2155205A1 (en)
GB (1) GB1326392A (en)
HU (1) HU163247B (en)
PL (1) PL80813B1 (en)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042855A (en) * 1975-06-12 1977-08-16 Armstrong Cork Company High frequency transistor ballast
US4060752A (en) * 1976-03-01 1977-11-29 General Electric Company Discharge lamp auxiliary circuit with dI/dt switching control
JPS5826638B2 (en) * 1976-10-15 1983-06-03 クロイ電機株式会社 High frequency lighting fluorescent lamp dimmer device
US4109307A (en) * 1977-05-04 1978-08-22 Gte Sylvania Incorporated High power factor conversion circuitry
US4276496A (en) * 1978-06-13 1981-06-30 Arena Ochoa Guido Gas discharge lamp employing a pulse generator with a double stage amplification circuit
DE2909605A1 (en) * 1979-03-12 1980-09-25 Patra Patent Treuhand CONTROL UNIT FOR OPERATING A DISCHARGE LAMP
US4259614A (en) * 1979-07-20 1981-03-31 Kohler Thomas P Electronic ballast-inverter for multiple fluorescent lamps
DE2941822A1 (en) * 1979-10-16 1981-04-30 Patra Patent Treuhand Ballast arrangement for operating low-pressure discharge lamps
US5438239A (en) * 1980-08-14 1995-08-01 Nilssen; Ole K. Fluorescent lamp ballast with light output control
US4392087A (en) * 1980-11-26 1983-07-05 Honeywell, Inc. Two-wire electronic dimming ballast for gaseous discharge lamps
DE3101568C2 (en) * 1981-01-20 1986-01-09 Wollank, Gerhard, Prof. Dipl.-Phys., 5040 Brühl Circuit arrangement for operating low-pressure discharge lamps with adjustable luminous flux
AT389614B (en) * 1981-03-12 1990-01-10 Zumtobel Ag CONTROL UNIT FOR AT LEAST ONE CONSUMER IGNITIONED AND SUPPLIED BY A GENERATOR
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.
FR2506554A1 (en) * 1981-05-20 1982-11-26 Signaux Entr Electriques ELECTRONIC SUPPLY DEVICE FOR DISCHARGE LAMPS
NL8104200A (en) * 1981-09-11 1983-04-05 Philips Nv ELECTRICAL CIRCUIT FOR OPERATING A GAS AND / OR VAPOR DISCHARGE LAMP.
DE3137940C2 (en) * 1981-09-24 1985-08-29 Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg Electronic ballast for at least one fluorescent lamp
DE3202445A1 (en) * 1982-01-26 1983-08-04 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Circuit arrangement for supplying a fluorescent tube
US4560908A (en) * 1982-05-27 1985-12-24 North American Philips Corporation High-frequency oscillator-inverter ballast circuit for discharge lamps
US4453109A (en) * 1982-05-27 1984-06-05 North American Philips Corporation Magnetic transformer switch and combination thereof with a discharge lamp
US4511195A (en) * 1983-06-30 1985-04-16 Beckman Instruments, Inc. Device for starting and operating gas discharge tubes
US4553071A (en) * 1983-07-18 1985-11-12 Energies Technologies Corp. Electronic ballast for fluorescent lamp
US4890039A (en) * 1983-09-12 1989-12-26 Nilssen Ole K Fluorescent lamp resonant ballast
US5256939A (en) * 1985-10-24 1993-10-26 Nilssen Ole K Magnetic electronic fluorescent lamp ballast
US4717863A (en) * 1986-02-18 1988-01-05 Zeiler Kenneth T Frequency modulation ballast circuit
US4798998A (en) * 1986-12-15 1989-01-17 Armstrong World Industries, Inc. Electronically dimmed power limited lighting system
DE3742921A1 (en) * 1987-12-17 1989-06-29 Pintsch Bamag Ag CONTROL UNIT FOR A DISCHARGE LAMP
DE58904984D1 (en) * 1989-12-01 1993-08-26 Siemens Ag ELECTRONIC CONTROL UNIT FOR FLUORESCENT LAMPS.
GB2244608A (en) * 1990-04-23 1991-12-04 P I Electronics Pte Ltd High frequency drive circuit for a fluorescent lamp
US5359263A (en) * 1992-11-20 1994-10-25 Remtech Company Tuned LRC ballasting circuit for compact fluorescent lighting
US5747941A (en) * 1995-12-07 1998-05-05 Energy Savings, Inc. Electronic ballast that monitors direct current through lamp filaments
US6188183B1 (en) 1998-06-13 2001-02-13 Simon Richard Greenwood High intensity discharge lamp ballast
US6495971B1 (en) 1998-06-13 2002-12-17 Hatch Transformers, Inc. High intensity discharge lamp ballast
US7592753B2 (en) * 1999-06-21 2009-09-22 Access Business Group International Llc Inductively-powered gas discharge lamp circuit
US7589480B2 (en) * 2006-05-26 2009-09-15 Greenwood Soar Ip Ltd. High intensity discharge lamp ballast
AU2006352157B2 (en) * 2006-12-21 2014-04-10 Osram Gmbh A cell arrangement for feeding electrical loads such as light sources, corresponding circuit and design method
US7821208B2 (en) * 2007-01-08 2010-10-26 Access Business Group International Llc Inductively-powered gas discharge lamp circuit
US8378585B2 (en) * 2008-05-23 2013-02-19 Osram Sylvania Inc. High frequency integrated HID lamp with run-up current
US7839098B2 (en) * 2008-05-23 2010-11-23 Osram Sylvania Inc. Microcontroller based ignition in high frequency ceramic metal halide lamps

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE570661A (en) * 1957-08-29
US3448335A (en) * 1966-07-22 1969-06-03 Trak Microwave Corp High frequency ac-dc fluorescent lamp driver circuit

Also Published As

Publication number Publication date
HU163247B (en) 1973-07-28
DE2155205A1 (en) 1972-05-18
US3710177A (en) 1973-01-09
PL80813B1 (en) 1975-08-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees