BR7901434A - Transformador de lastro de alta frequencia e circuito de lastro de alimentacao de lampada de descarga - Google Patents

Transformador de lastro de alta frequencia e circuito de lastro de alimentacao de lampada de descarga

Info

Publication number
BR7901434A
BR7901434A BR7901434A BR7901434A BR7901434A BR 7901434 A BR7901434 A BR 7901434A BR 7901434 A BR7901434 A BR 7901434A BR 7901434 A BR7901434 A BR 7901434A BR 7901434 A BR7901434 A BR 7901434A
Authority
BR
Brazil
Prior art keywords
ballast
high frequency
discharge lamp
lamp power
transformer
Prior art date
Application number
BR7901434A
Other languages
English (en)
Inventor
D Chen
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of BR7901434A publication Critical patent/BR7901434A/pt

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/08—High-leakage transformers or inductances
    • H01F38/10—Ballasts, e.g. for discharge lamps

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
BR7901434A 1978-03-09 1979-03-08 Transformador de lastro de alta frequencia e circuito de lastro de alimentacao de lampada de descarga BR7901434A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/884,767 US4187450A (en) 1978-03-09 1978-03-09 High frequency ballast transformer

Publications (1)

Publication Number Publication Date
BR7901434A true BR7901434A (pt) 1979-10-09

Family

ID=25385348

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7901434A BR7901434A (pt) 1978-03-09 1979-03-08 Transformador de lastro de alta frequencia e circuito de lastro de alimentacao de lampada de descarga

Country Status (5)

Country Link
US (1) US4187450A (pt)
JP (1) JPS54125437A (pt)
BR (1) BR7901434A (pt)
DE (1) DE2908712A1 (pt)
GB (1) GB2018520B (pt)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4667132A (en) * 1986-03-03 1987-05-19 Dianalog Systems, Inc. Electronic transformer system for neon lamps
GB8617507D0 (en) * 1986-07-17 1986-08-28 Vickers Systems Ltd Transformers
US4939420A (en) * 1987-04-06 1990-07-03 Lim Kenneth S Fluorescent reflector lamp assembly
DE8710023U1 (de) * 1987-07-22 1987-09-10 Werner Schaffer Transformatoren GmbH & Co KG, 8340 Pfarrkirchen Primärgetaktetes Schaltnetzteil
US4916362A (en) * 1988-04-05 1990-04-10 Neon Dynamics Corporation Excitation supply for gas discharge tubes
US4980611A (en) * 1988-04-05 1990-12-25 Neon Dynamics Corporation Overvoltage shutdown circuit for excitation supply for gas discharge tubes
DE4009499A1 (de) * 1990-03-24 1991-09-26 Ceag Licht & Strom Schaltungsanordnung zum betrieb einer leuchtstofflampe aus einer gleichspannungsquelle
DE4130581A1 (de) * 1991-09-13 1993-03-18 Vogt Electronic Ag Schaltungsanordnung zum erzeugen einer parabelfoermigen modulationsspannung zum modulieren der fokusspannung bei geraeten mit bildroehre, insbesondere fernsehgeraeten
JP3311391B2 (ja) * 1991-09-13 2002-08-05 ヴィエルティー コーポレーション 漏洩インダクタンス低減トランス、これを用いた高周波回路及びパワーコンバータ並びにトランスにおける漏洩インダクタンスの低減方法
DE69311173T2 (de) * 1992-03-19 1997-12-04 Philips Electronics Nv Zeilenausgangstransformator
DE69320808T2 (de) * 1992-06-05 1999-03-04 Diablo Research Corp Elektrodenlose entladungslampe mit push-pull e klasse verstärker und spule
US5489825A (en) * 1992-11-09 1996-02-06 Tunewell Technology Limited Transformer
US5796216A (en) * 1993-07-16 1998-08-18 Delta Power Supply, Inc. Electronic ignition enhancing circuit having both fundamental and harmonic resonant circuits as well as a DC offset
US5847518A (en) * 1996-07-08 1998-12-08 Hitachi Ferrite Electronics, Ltd. High voltage transformer with secondary coil windings on opposing bobbins
US6181066B1 (en) 1997-12-02 2001-01-30 Power Circuit Innovations, Inc. Frequency modulated ballast with loosely coupled transformer for parallel gas discharge lamp control
US6094017A (en) * 1997-12-02 2000-07-25 Power Circuit Innovations, Inc. Dimming ballast and drive method for a metal halide lamp using a frequency controlled loosely coupled transformer
US6072282A (en) * 1997-12-02 2000-06-06 Power Circuit Innovations, Inc. Frequency controlled quick and soft start gas discharge lamp ballast and method therefor
US6088249A (en) * 1997-12-02 2000-07-11 Power Circuit Innovations, Inc. Frequency modulated ballast with loosely coupled transformer
US5933340A (en) * 1997-12-02 1999-08-03 Power Circuit Innovations, Inc. Frequency controller with loosely coupled transformer having a shunt with a gap and method therefor
WO1999055124A1 (de) * 1998-04-18 1999-10-28 Manfred Diez Verfahren zum betreiben eines gasentladungsstrahlers, und anordnung zur durchführung eines solchen verfahrens
US7514878B2 (en) * 2003-04-04 2009-04-07 Purespectrum, Inc. High frequency electronic ballast with sine wave oscillator
US7388334B2 (en) * 2003-04-04 2008-06-17 Purespectrum, Inc. High frequency electronic ballast with sine wave oscillator
JP4338123B2 (ja) * 2003-04-25 2009-10-07 スミダコーポレーション株式会社 放電灯駆動装置
US7002304B2 (en) * 2004-01-02 2006-02-21 Lien Chang Electronic Enterprise Co., Ltd. Multi-lamp drive device
US20090200960A1 (en) * 2008-02-08 2009-08-13 Pure Spectrum, Inc. Methods and Apparatus for Self-Starting Dimmable Ballasts With A High Power Factor
US20090200952A1 (en) * 2008-02-08 2009-08-13 Purespectrum, Inc. Methods and apparatus for dimming light sources
US20090295300A1 (en) * 2008-02-08 2009-12-03 Purespectrum, Inc Methods and apparatus for a dimmable ballast for use with led based light sources
US20090200951A1 (en) * 2008-02-08 2009-08-13 Purespectrum, Inc. Methods and Apparatus for Dimming Light Sources
US20100225239A1 (en) * 2009-03-04 2010-09-09 Purespectrum, Inc. Methods and apparatus for a high power factor, high efficiency, dimmable, rapid starting cold cathode lighting ballast

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2949565A (en) * 1958-02-10 1960-08-16 Siemens Ag Direct current to alternating current inverter
US3005130A (en) * 1958-11-21 1961-10-17 Samuel A Schwartz Fluorescent lighting system
US3078429A (en) * 1958-12-22 1963-02-19 Wiesner Ernst Current-limiting reactors for fluorescent tubes or the like
GB1176360A (en) * 1967-08-11 1970-01-01 Thorn Electronics Ltd Improvements in Inverter Circuits
US3949268A (en) * 1971-02-11 1976-04-06 Burkhard Von Mangoldt Ballast unit for gas discharge lamps such as fluorescent tubes or the like
US3781638A (en) * 1972-06-28 1973-12-25 Gen Electric Power supply including inverter having multiple-winding transformer and control transistor for controlling main switching transistors and providing overcurrent protection
US4080725A (en) * 1974-06-26 1978-03-28 Thomas & Skinner, Inc. Ferromagnetic core with variable shunt air gap and method of making it
US3956684A (en) * 1974-10-21 1976-05-11 General Electric Company DC to AC inverter having improved switching efficiency, overload, and thermal protection features
GB1528910A (en) * 1974-12-11 1978-10-18 Thorn Electrical Ind Ltd Discharge lamp ballast circuits
US4088942A (en) * 1976-08-30 1978-05-09 Rca Corporation Ferroresonant transformer structure

Also Published As

Publication number Publication date
GB2018520A (en) 1979-10-17
DE2908712A1 (de) 1979-09-13
US4187450A (en) 1980-02-05
JPS54125437A (en) 1979-09-28
GB2018520B (en) 1983-03-16

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