GB1236604A - Gas discharge lamp operating system - Google Patents

Gas discharge lamp operating system

Info

Publication number
GB1236604A
GB1236604A GB43915/68A GB4391568A GB1236604A GB 1236604 A GB1236604 A GB 1236604A GB 43915/68 A GB43915/68 A GB 43915/68A GB 4391568 A GB4391568 A GB 4391568A GB 1236604 A GB1236604 A GB 1236604A
Authority
GB
United Kingdom
Prior art keywords
lamp
gas discharge
harmonic
discharge lamp
supply
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
GB43915/68A
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.)
Berkey Photo Inc
Original Assignee
Berkey Photo Inc
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 Berkey Photo Inc filed Critical Berkey Photo Inc
Publication of GB1236604A publication Critical patent/GB1236604A/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
    • H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
    • H05B41/20—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch
    • H05B41/23—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode
    • H05B41/232—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for low-pressure lamps

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

1,236,604. Supply systems for gas discharge lamps. BERKEY PHOTO Inc. 16 Sept., 1968 [9 Oct., 1967], No. 43915/68. Heading H2H. An electric system providing an A.C. supply to a gas discharge lamp'has a saturable inductance, such as an autotransformer 14, in series with a capacitor 17 and the gas discharge lamp 24 which has a low impedance when initially ignited and increases in impedance as the lamp is warmed to operating temperature. The respective values of the impedances of the three components are such that a harmonic is generated in the series circuit upon ignition of the lamp to effect quick warming of the lamp and at operating temperature the circuit is close to resonance at the supply frequency to provide regulating action in the event of variations of supply frequency. The harmonic is preferably a third harmonic and the autotransformer is of the shell type with magnetic shunts (Fig. 2, not shown) between the windings on a central core and the outer limbs. Starting pulses from a transformer 20 pass through the lamp 24 and a low capacity capacitor 27.
GB43915/68A 1967-10-09 1968-09-16 Gas discharge lamp operating system Expired GB1236604A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67383767A 1967-10-09 1967-10-09

Publications (1)

Publication Number Publication Date
GB1236604A true GB1236604A (en) 1971-06-23

Family

ID=24704297

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43915/68A Expired GB1236604A (en) 1967-10-09 1968-09-16 Gas discharge lamp operating system

Country Status (4)

Country Link
US (1) US3555352A (en)
DE (1) DE1802149B2 (en)
FR (1) FR1588297A (en)
GB (1) GB1236604A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120470A (en) * 1982-04-27 1983-11-30 Emi Plc Thorn Improvements in or relating to discharge lamp circuits

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4356433A (en) * 1980-07-07 1982-10-26 The Nuarc Company, Inc. HID Lamp power supply
US4339692A (en) * 1980-11-18 1982-07-13 The Nuarc Company, Inc. Power supply for HID lamp
US4399391A (en) * 1981-06-10 1983-08-16 General Electric Company Circuit for starting and operating fluorescent lamps
US4608523A (en) * 1984-01-16 1986-08-26 Nilssen Ole K Phase correction for series-resonant ballasts
US5013974A (en) * 1987-08-24 1991-05-07 Nilssen Ole K Electronic ballast with improved lamp current crest factor
US5021714A (en) * 1990-05-10 1991-06-04 Valmont Industries, Inc. Circuit for starting and operating fluorescent lamps
DE4127970C1 (en) * 1991-08-23 1992-10-01 Robert Bosch Gmbh, 7000 Stuttgart, De
US6100652A (en) * 1998-11-12 2000-08-08 Osram Sylvania Inc. Ballast with starting circuit for high-intensity discharge lamps
EP1647166A1 (en) * 2003-07-23 2006-04-19 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit for operating high-pressure discharge lamps
BRPI0618223A2 (en) * 2005-11-02 2011-08-23 Osram Ges Mit Beschronkter Haftung apparatus for operating at least one discharge lamp

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2333499A (en) * 1940-10-30 1943-11-02 William A Warren Starting and operating circuit for hot cathode gaseous discharge lamps
US2334568A (en) * 1942-01-22 1943-11-16 Gen Electric Apparatus for starting and controlling electrical discharge devices
US2487092A (en) * 1947-07-23 1949-11-08 Lester F Bird Flickerless operation of electric lighting elements
US2482894A (en) * 1947-10-07 1949-09-27 Hanovia Chemical & Mfg Co Operating system for vapor arc lamps
US2588858A (en) * 1947-10-07 1952-03-11 Lehmann Frantisek Circuit arrangement for discharge tubes, particularly glow discharge tubes
US2470460A (en) * 1948-06-05 1949-05-17 Hanovia Chemical & Mfg Co Wattage controlling system
US2773217A (en) * 1952-01-29 1956-12-04 Gen Motors Corp Fluorescent lamp system
US2858481A (en) * 1954-06-02 1958-10-28 Engelhard Ind Inc Operating circuit for compact type arc lamps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120470A (en) * 1982-04-27 1983-11-30 Emi Plc Thorn Improvements in or relating to discharge lamp circuits

Also Published As

Publication number Publication date
US3555352A (en) 1971-01-12
FR1588297A (en) 1970-04-10
DE1802149B2 (en) 1979-04-05
DE1802149A1 (en) 1969-06-04

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