GB2309344B - An oscillator - Google Patents

An oscillator

Info

Publication number
GB2309344B
GB2309344B GB9700557A GB9700557A GB2309344B GB 2309344 B GB2309344 B GB 2309344B GB 9700557 A GB9700557 A GB 9700557A GB 9700557 A GB9700557 A GB 9700557A GB 2309344 B GB2309344 B GB 2309344B
Authority
GB
United Kingdom
Prior art keywords
oscillator
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 - Fee Related
Application number
GB9700557A
Other versions
GB9700557D0 (en
GB2309344A (en
Inventor
Ian Macdonald Green
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.)
Central Research Laboratories Ltd
Original Assignee
Central Research Laboratories 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 Central Research Laboratories Ltd filed Critical Central Research Laboratories Ltd
Publication of GB9700557D0 publication Critical patent/GB9700557D0/en
Publication of GB2309344A publication Critical patent/GB2309344A/en
Application granted granted Critical
Publication of GB2309344B publication Critical patent/GB2309344B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14Circuit arrangements
    • H05B41/26Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/2821Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a single-switch converter or a parallel push-pull converter in the final stage
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14Circuit arrangements
    • H05B41/36Controlling
    • H05B41/38Controlling the intensity of light
    • H05B41/39Controlling the intensity of light continuously
    • H05B41/392Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3927Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by pulse width modulation
GB9700557A 1996-01-18 1997-01-13 An oscillator Expired - Fee Related GB2309344B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9600982.4A GB9600982D0 (en) 1996-01-18 1996-01-18 An oscillator

Publications (3)

Publication Number Publication Date
GB9700557D0 GB9700557D0 (en) 1997-03-05
GB2309344A GB2309344A (en) 1997-07-23
GB2309344B true GB2309344B (en) 1998-04-15

Family

ID=10787186

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9600982.4A Pending GB9600982D0 (en) 1996-01-18 1996-01-18 An oscillator
GB9700557A Expired - Fee Related GB2309344B (en) 1996-01-18 1997-01-13 An oscillator

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9600982.4A Pending GB9600982D0 (en) 1996-01-18 1996-01-18 An oscillator

Country Status (5)

Country Link
CA (1) CA2243462C (en)
DE (1) DE19781524T1 (en)
GB (2) GB9600982D0 (en)
NL (1) NL1005035C2 (en)
WO (1) WO1997026705A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6118226A (en) 1998-07-31 2000-09-12 Federal-Mogul World Wide, Inc. Electrodeless neon light module for vehicle lighting systems
DE60143805D1 (en) * 2000-10-31 2011-02-17 Osram Sylvania Inc BALLAST SELF-TOOSCILLATION INVERTERS WITH PHASE-CONTROLLED VOLTAGE FEEDBACK
US6624593B2 (en) * 2001-10-08 2003-09-23 Randall D. Blanchard Dimmable ballast for electrodeless fluorescent lamps
CN110740555B (en) * 2019-10-24 2021-04-30 苏州锐联芯半导体有限公司 Full-integrated electric vehicle flasher driving chip

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4553070A (en) * 1981-09-18 1985-11-12 Oy Helvar Electronic ballast for a discharge lamp
EP0392834A1 (en) * 1989-04-14 1990-10-17 TLG plc Ballast circuits for gas discharge lamps
US5416388A (en) * 1993-12-09 1995-05-16 Motorola Lighting, Inc. Electronic ballast with two transistors and two transformers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8503008A (en) * 1985-11-04 1987-06-01 Philips Nv DC AC CONVERTER FOR IGNITION AND POWER OF A DISCHARGE LAMP.
WO1992001334A1 (en) * 1987-12-11 1992-01-23 Murray Scott V Magnetic structure and power converter for light sources
US5172033A (en) * 1990-09-14 1992-12-15 U. S. Philips Corporation Discharge lamp operating inverter circuit with electric dimmer utilizing frequency control of the inverter
US5150018A (en) * 1991-08-12 1992-09-22 North American Philips Corporation Gas discharge lamp with grid and control circuits therefor
US5191302A (en) * 1991-11-25 1993-03-02 Lepel Corporation MOSFET oscillator for supplying a high-power RF inductive load
US5272327A (en) * 1992-05-26 1993-12-21 Compaq Computer Corporation Constant brightness liquid crystal display backlight control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4553070A (en) * 1981-09-18 1985-11-12 Oy Helvar Electronic ballast for a discharge lamp
EP0392834A1 (en) * 1989-04-14 1990-10-17 TLG plc Ballast circuits for gas discharge lamps
US5416388A (en) * 1993-12-09 1995-05-16 Motorola Lighting, Inc. Electronic ballast with two transistors and two transformers

Also Published As

Publication number Publication date
CA2243462C (en) 2001-08-21
CA2243462A1 (en) 1997-07-24
GB9600982D0 (en) 1996-03-20
NL1005035A1 (en) 1997-07-22
NL1005035C2 (en) 1997-08-05
DE19781524T1 (en) 1998-12-17
WO1997026705A1 (en) 1997-07-24
GB9700557D0 (en) 1997-03-05
GB2309344A (en) 1997-07-23

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Legal Events

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

Effective date: 20040113