GB1119874A - Discharge lamp-starting circuits producing high voltage pulses - Google Patents

Discharge lamp-starting circuits producing high voltage pulses

Info

Publication number
GB1119874A
GB1119874A GB2558666A GB2558666A GB1119874A GB 1119874 A GB1119874 A GB 1119874A GB 2558666 A GB2558666 A GB 2558666A GB 2558666 A GB2558666 A GB 2558666A GB 1119874 A GB1119874 A GB 1119874A
Authority
GB
United Kingdom
Prior art keywords
capacitor
discharge lamp
discharged
high voltage
voltage pulses
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
GB2558666A
Inventor
Donald Frederick Chapman
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.)
British Lighting Industries Ltd
Original Assignee
British Lighting 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 British Lighting Industries Ltd filed Critical British Lighting Industries Ltd
Priority to GB2558666A priority Critical patent/GB1119874A/en
Publication of GB1119874A publication Critical patent/GB1119874A/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

Abstract

1,119,874. Discharge lamp circuits. BRITISH LIGHTING INDUSTRIES Ltd. 8 June, 1967 [8 June, 1966], No. 25586/66. Heading H2H. A starting circuit for a discharge lamp 10 having a ballast choke 11 comprises a capacitor 15 charged each half cycle through an impedance 16 and discharged near the peak of each half wave by a bi-directional semi-conductor breakdown device 14 through part of a step-up autotransformer 17. In another arrangement (Fig. 2, not shown), a secondary winding (20) is used as the charging impedance and the capacitor is discharged through a coupled primary winding (19). In a further arrangement (Fig. 3, not shown), the starting pulse is produced by the charging current of the capacitor which is discharged by a leakage resistor (25). The device 14 may comprise Shockley diodes, thyristors with floating control electrodes, a Symistor, Triac or controlled A.C. switch. A capacitor may be connected in series with the choke 11 and the lamp may have heatable electrodes.
GB2558666A 1966-06-08 1966-06-08 Discharge lamp-starting circuits producing high voltage pulses Expired GB1119874A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2558666A GB1119874A (en) 1966-06-08 1966-06-08 Discharge lamp-starting circuits producing high voltage pulses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2558666A GB1119874A (en) 1966-06-08 1966-06-08 Discharge lamp-starting circuits producing high voltage pulses

Publications (1)

Publication Number Publication Date
GB1119874A true GB1119874A (en) 1968-07-17

Family

ID=10230080

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2558666A Expired GB1119874A (en) 1966-06-08 1966-06-08 Discharge lamp-starting circuits producing high voltage pulses

Country Status (1)

Country Link
GB (1) GB1119874A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631317A (en) * 1970-01-16 1971-12-28 Kuroi Electric Ind Co System for lighting a fluorescent lamp
US3731142A (en) * 1971-08-20 1973-05-01 Lutron Electronics Co High-frequency fluorescent tube lighting circuit with isolating transformer
DE3923699A1 (en) * 1988-07-27 1990-03-22 Gen Electric PARALLEL STARTING FOR GAS DISCHARGE LAMPS
EP0436985A1 (en) * 1990-01-11 1991-07-17 Koninklijke Philips Electronics N.V. Circuit arrangement suitable for igniting a high-pressure discharge lamp

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631317A (en) * 1970-01-16 1971-12-28 Kuroi Electric Ind Co System for lighting a fluorescent lamp
US3731142A (en) * 1971-08-20 1973-05-01 Lutron Electronics Co High-frequency fluorescent tube lighting circuit with isolating transformer
DE3923699A1 (en) * 1988-07-27 1990-03-22 Gen Electric PARALLEL STARTING FOR GAS DISCHARGE LAMPS
EP0436985A1 (en) * 1990-01-11 1991-07-17 Koninklijke Philips Electronics N.V. Circuit arrangement suitable for igniting a high-pressure discharge lamp

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