MX170570B - CIRCUIT TO PROVIDE AN OPERATING CURRENT TO A FLUORESCENT LAMP - Google Patents
CIRCUIT TO PROVIDE AN OPERATING CURRENT TO A FLUORESCENT LAMPInfo
- Publication number
- MX170570B MX170570B MX1589589A MX1589589A MX170570B MX 170570 B MX170570 B MX 170570B MX 1589589 A MX1589589 A MX 1589589A MX 1589589 A MX1589589 A MX 1589589A MX 170570 B MX170570 B MX 170570B
- Authority
- MX
- Mexico
- Prior art keywords
- circuit
- lamp
- energy
- fluorescent lamp
- operating current
- Prior art date
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
- H05B41/36—Controlling
- H05B41/38—Controlling the intensity of light
- H05B41/39—Controlling the intensity of light continuously
- H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
-
- 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
-
- 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
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit 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
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
La presente invención se refiere a un circuito para proporcionar corriente operativa a una lámpara fluorescente, caracterizado porque comprende: primeras terminales para acoplar el circuito a una fuente de energía de corriente alterna (CA) que tiene una frecuencia de energía de CA; terminales para acoplar eléctricamente el circuito con la lámpara; montajes para generar una señal de referencia periódica que tiene una frecuencia substancialmente mayor que la frecuencia de energía de CA; almacenadores de energía conmutable que responden a la señal de referencia para almacenar alternativamente energía de la fuente de energía durante un primer intervalo y descargar cuando menos algo de la energía en la lámpara durante un segundo intervalo; montajes que responden a fluctuaciones en el voltaje de energía CA para variar la proporción del primer y segundo intervalos, para mantener la magnitud de la corriente de lámpara, generalmente constante.The present invention relates to a circuit for supplying operating current to a fluorescent lamp, characterized in that it comprises: first terminals for coupling the circuit to an alternating current (AC) power source having an AC power frequency; terminals for electrically coupling the circuit with the lamp; assemblies to generate a periodic reference signal having a frequency substantially greater than the AC power frequency; switchable energy stores that respond to the reference signal to alternatively store energy from the energy source during a first interval and discharge at least some of the energy into the lamp during a second interval; assemblies that respond to fluctuations in the AC power voltage to vary the ratio of the first and second intervals, to keep the magnitude of the lamp current generally constant.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18975388A | 1988-05-03 | 1988-05-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
MX170570B true MX170570B (en) | 1993-08-31 |
Family
ID=22698627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX1589589A MX170570B (en) | 1988-05-03 | 1989-05-02 | CIRCUIT TO PROVIDE AN OPERATING CURRENT TO A FLUORESCENT LAMP |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPH0260097A (en) |
DE (1) | DE3914676A1 (en) |
FR (1) | FR2631508A1 (en) |
GB (1) | GB2219877A (en) |
MX (1) | MX170570B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2253077A (en) * | 1991-01-23 | 1992-08-26 | Carl Edmund Smith | Power control system for gas discharge tubes |
AT403865B (en) * | 1991-07-10 | 1998-06-25 | Fronius Schweissmasch | VOLTAGE CONVERSION DEVICE FOR A DC VOLTAGE CONSUMER |
US5831420A (en) * | 1997-04-28 | 1998-11-03 | Motorola, Inc. | Pulse load averaging power converter |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4251752A (en) * | 1979-05-07 | 1981-02-17 | Synergetics, Inc. | Solid state electronic ballast system for fluorescent lamps |
US4437146A (en) * | 1982-08-09 | 1984-03-13 | Pacific Electro Dynamics, Inc. | Boost power supply having power factor correction circuit |
ZA862614B (en) * | 1986-04-08 | 1986-12-30 | David John Cockram | Controller for gas discharge lamps |
US4677366A (en) * | 1986-05-12 | 1987-06-30 | Pioneer Research, Inc. | Unity power factor power supply |
GB8800527D0 (en) * | 1988-01-11 | 1988-02-10 | Farnell Instr Ltd | Control arrangement for switched mode power supply |
-
1989
- 1989-04-28 GB GB8909818A patent/GB2219877A/en not_active Withdrawn
- 1989-05-02 FR FR8905829A patent/FR2631508A1/en active Pending
- 1989-05-02 MX MX1589589A patent/MX170570B/en unknown
- 1989-05-02 JP JP11227289A patent/JPH0260097A/en active Pending
- 1989-05-03 DE DE19893914676 patent/DE3914676A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
JPH0260097A (en) | 1990-02-28 |
DE3914676A1 (en) | 1989-12-07 |
FR2631508A1 (en) | 1989-11-17 |
GB8909818D0 (en) | 1989-06-14 |
GB2219877A (en) | 1989-12-20 |
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