CA2788742A1 - Lighting device with optical pulsation suppression by polyphase-driven electric energy - Google Patents
Lighting device with optical pulsation suppression by polyphase-driven electric energy Download PDFInfo
- Publication number
- CA2788742A1 CA2788742A1 CA2788742A CA2788742A CA2788742A1 CA 2788742 A1 CA2788742 A1 CA 2788742A1 CA 2788742 A CA2788742 A CA 2788742A CA 2788742 A CA2788742 A CA 2788742A CA 2788742 A1 CA2788742 A1 CA 2788742A1
- Authority
- CA
- Canada
- Prior art keywords
- phase
- current power
- alternating current
- driven
- parallel
- 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.)
- Granted
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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The present invention relies on polyphase alternating current power with phase difference or direct current power rectified from polyphase alternating current power to drive a common -electric-driven luminous body, or to separately drive adjacently installed individual electric-driven luminous bodies so that the pulsation of the outwardly projected light is reduced.
Description
TITLE: LIGHTING DEVICE WITH OPTICAL PULSATION
SUPPRESSION BY POLYPHASE-DRIVEN ELECTRIC
ENERGY
BACKGROUND OF THE INVENTION
(a) Field of the invention The present invention relates to a method of reducing the pulsation rate of the luminous brightness following the alternating current power voltage of an electric-driven luminous body which directly uses alternating current power by means of polyphase-driven electric energy.
(b) Description of the Prior Art The deficiency of traditional alternating current lamps lies in their discontinuous light optical pulsation caused by alternating current power pulsation SUMMARY OF THE INVENTION
The present invention relies on polyphase alternating current power with phase difference or direct current power rectified from polyphase alternating current power to drive a common -electric-driven luminous body, or to separately drive adjacently installed individual electric-driven luminous bodies so that the pulsation of the outwardly projected light is reduced.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is the optical pulsation oscillogram of the traditional single phase alternating current power or alternating current full wave-rectified direct current directly driving the electric-driven luminous body.
FIG. 2 is the circuit diagram in which each phase of the three-phase alternating current power being individually connected in parallel with a circuit device in series connected by the current limit component (Z 10) i alternating current power to drive a common -electric-driven luminous body, or to separately drive adjacently installed individual electric-driven luminous bodies so that the pulsation of the outwardly projected light is reduced.
FIG. 1 is the optical pulsation oscillogram of the traditional single phase alternating current power or alternating current full wave-rectified direct current directly driving the electric-driven luminous body.
As shown in FIG 1, a is alternating current power wave form, b is wave form of direct current rectified from alternating current, and c is optical pulsation wave form of electric-driven luminous body; if the electric energy input is a bidirectional pulsating electric energy with a bidirectional non-sinusoidal wave, the improvement function is also the same.
FIG 2 is the circuit diagram in which each phase of the three-phase alternating current power being individually connected in parallel with a circuit device in series connected by the current limit component (Z 10) and the alternative current terminal of single-phase bridge rectifier, then the direct current output terminal of the single-phase bridge rectifier of each phase being homo-polar connected in parallel for jointly driving the direct current electric-driven luminous body (2000); as shown in FIG. 2, it mainly consists of:
-- Direct current electric-driven luminous body (2000): constituted by a solid state luminous body driven by two or more than two direct current powers, including foundational light emitting units configured by light emitting diodes or organic light emitting diodes and driven by the direct current power, or other solid state luminous bodies capable of being driven by the direct current power;
The current limit component (Z 10) is connected in series with the alternative current terminal of the single phase bridge rectifier (804), then connected in parallel between the three-phase alternating current power line R and the three-phase alternating current power line T;
The current limit component (Z10) is connected in series with the alternative current terminal of the single phase bridge rectifier (802), then connected in parallel between the three-phase alternating current power line S and the three-phase alternating current power line R;
The current limit component (Z 10) is connected in series with the alternative terminal of the single phase bridge rectifier (803), then connected in parallel between the three-phase alternating current power line T and the three-phase alternating current power line S;
--Current limit component (Z 10): constituted by one or more than one of the following circuit structures, including:
1) At least one or more than one of the resistant impedance component, inductive impedance component and capacitor impedance component being connected in series, in parallel, or in series and parallel;
SUPPRESSION BY POLYPHASE-DRIVEN ELECTRIC
ENERGY
BACKGROUND OF THE INVENTION
(a) Field of the invention The present invention relates to a method of reducing the pulsation rate of the luminous brightness following the alternating current power voltage of an electric-driven luminous body which directly uses alternating current power by means of polyphase-driven electric energy.
(b) Description of the Prior Art The deficiency of traditional alternating current lamps lies in their discontinuous light optical pulsation caused by alternating current power pulsation SUMMARY OF THE INVENTION
The present invention relies on polyphase alternating current power with phase difference or direct current power rectified from polyphase alternating current power to drive a common -electric-driven luminous body, or to separately drive adjacently installed individual electric-driven luminous bodies so that the pulsation of the outwardly projected light is reduced.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is the optical pulsation oscillogram of the traditional single phase alternating current power or alternating current full wave-rectified direct current directly driving the electric-driven luminous body.
FIG. 2 is the circuit diagram in which each phase of the three-phase alternating current power being individually connected in parallel with a circuit device in series connected by the current limit component (Z 10) i alternating current power to drive a common -electric-driven luminous body, or to separately drive adjacently installed individual electric-driven luminous bodies so that the pulsation of the outwardly projected light is reduced.
FIG. 1 is the optical pulsation oscillogram of the traditional single phase alternating current power or alternating current full wave-rectified direct current directly driving the electric-driven luminous body.
As shown in FIG 1, a is alternating current power wave form, b is wave form of direct current rectified from alternating current, and c is optical pulsation wave form of electric-driven luminous body; if the electric energy input is a bidirectional pulsating electric energy with a bidirectional non-sinusoidal wave, the improvement function is also the same.
FIG 2 is the circuit diagram in which each phase of the three-phase alternating current power being individually connected in parallel with a circuit device in series connected by the current limit component (Z 10) and the alternative current terminal of single-phase bridge rectifier, then the direct current output terminal of the single-phase bridge rectifier of each phase being homo-polar connected in parallel for jointly driving the direct current electric-driven luminous body (2000); as shown in FIG. 2, it mainly consists of:
-- Direct current electric-driven luminous body (2000): constituted by a solid state luminous body driven by two or more than two direct current powers, including foundational light emitting units configured by light emitting diodes or organic light emitting diodes and driven by the direct current power, or other solid state luminous bodies capable of being driven by the direct current power;
The current limit component (Z 10) is connected in series with the alternative current terminal of the single phase bridge rectifier (804), then connected in parallel between the three-phase alternating current power line R and the three-phase alternating current power line T;
The current limit component (Z10) is connected in series with the alternative current terminal of the single phase bridge rectifier (802), then connected in parallel between the three-phase alternating current power line S and the three-phase alternating current power line R;
The current limit component (Z 10) is connected in series with the alternative terminal of the single phase bridge rectifier (803), then connected in parallel between the three-phase alternating current power line T and the three-phase alternating current power line S;
--Current limit component (Z 10): constituted by one or more than one of the following circuit structures, including:
1) At least one or more than one of the resistant impedance component, inductive impedance component and capacitor impedance component being connected in series, in parallel, or in series and parallel;
2) a fixed-current or limited-current control circuit configured by a solid state semi-conductive circuit for controlling the light emitting unit in an analog or chopping manner.
FIG. 3 is the circuit diagram in which a circuit device in series connected to the current limit component (Z 10) and the alternative current terminal of single-phase bridge rectifier being individually installed between the R, S, and T lines of the three phase four wire alternating current power and the neutral line (N) of the three phase four wire alternating current power, then the direct current output terminal of the single-phase bridge rectifier of each phase being homo-polar connected in parallel for jointly driving the direct current electric-driven luminous body (2000); as shown in FIG 3, it mainly consists of.
-- Direct current electric driven luminous body (2000): constituted by a solid state luminous body driven by two or more than two direct current powers, including foundational light emitting units configured by light emitting diodes or organic light emitting diodes and driven by the direct current power, or other solid state luminous bodies capable of being driven by the direct current power;
The current limit component (Z10) is connected in series with the alternative current terminal of the single phase bridge rectifier (802), then connected in parallel between the three-phase four-wire alternating current power line R and the neutral line N of the three-phase four-wire alternating current power;
The current limit component (Z10) is connected in series with the alternative current terminal of the single phase bridge rectifier (803), then connected in parallel between the three-phase four-wire alternating current power line S and the neutral line N of the three-phase four-wire alternating current power;
The current limit component (Z 10) is connected in series with the alternative current terminal of the single phase bridge rectifier (804), then connected in parallel between the three-phase four-wire alternating current power line T and the neutral line N of the three-phase four-wire alternating current power;
--Current limit component (Z 10): constituted by one or more than one of the following circuit structures, including:
1) at least one or more than one of the resistant impedance component, inductive impedance component and capacitor impedance component being connected in series, in parallel, or in series and parallel;
2) a fixed-current or limited-current control circuit configured by a solid state semi-conductive circuit for controlling the light emitting unit in an analog or chopping manner.
FIG. 3 is the circuit diagram in which a circuit device in series connected to the current limit component (Z 10) and the alternative current terminal of single-phase bridge rectifier being individually installed between the R, S, and T lines of the three phase four wire alternating current power and the neutral line (N) of the three phase four wire alternating current power, then the direct current output terminal of the single-phase bridge rectifier of each phase being homo-polar connected in parallel for jointly driving the direct current electric-driven luminous body (2000); as shown in FIG 3, it mainly consists of.
-- Direct current electric driven luminous body (2000): constituted by a solid state luminous body driven by two or more than two direct current powers, including foundational light emitting units configured by light emitting diodes or organic light emitting diodes and driven by the direct current power, or other solid state luminous bodies capable of being driven by the direct current power;
The current limit component (Z10) is connected in series with the alternative current terminal of the single phase bridge rectifier (802), then connected in parallel between the three-phase four-wire alternating current power line R and the neutral line N of the three-phase four-wire alternating current power;
The current limit component (Z10) is connected in series with the alternative current terminal of the single phase bridge rectifier (803), then connected in parallel between the three-phase four-wire alternating current power line S and the neutral line N of the three-phase four-wire alternating current power;
The current limit component (Z 10) is connected in series with the alternative current terminal of the single phase bridge rectifier (804), then connected in parallel between the three-phase four-wire alternating current power line T and the neutral line N of the three-phase four-wire alternating current power;
--Current limit component (Z 10): constituted by one or more than one of the following circuit structures, including:
1) at least one or more than one of the resistant impedance component, inductive impedance component and capacitor impedance component being connected in series, in parallel, or in series and parallel;
2) a fixed-current or limited-current control circuit configured by a solid state semi-conductive circuit for controlling the light emitting unit in an analog or chopping manner.
Claims (2)
1. A lighting device with optical pulsation suppression by polyphase-driven electric energy, which relies on polyphase alternating current power with phase difference or direct current power rectified from polyphase alternating current power to drive a common -electric-driven luminous body, or to separately drive adjacently installed individual electric-driven luminous bodies so that the pulsation of the outwardly projected light is reduced; wherein each phase of the three-phase alternating current power being individually connected in parallel with a circuit device in series connected by the current limit component (Z10) and the alternative current terminal of single-phase bridge rectifier, then the direct current output terminal of the single-phase bridge rectifier of each phase being homo-polar connected in parallel for jointly driving the direct current electric-driven luminous body (2000), and it mainly consists of--- Direct current electric-driven luminous body (2000): constituted by a solid state luminous body driven by two or more than two direct current powers, including foundational light emitting units configured by light emitting diodes or organic light emitting diodes and driven by the direct current power, or other solid state luminous bodies capable of being driven by the direct current power;
The current limit component (Z10) is connected in series with the alternative current terminal of the single phase bridge rectifier (804), then connected in parallel between the three-phase alternating current power line R and the three-phase alternating current power line T;
The current limit component (Z10) is connected in series with the alternative current terminal of the single phase bridge rectifier (802), then connected in parallel between the three-phase alternating current power line S and the three-phase alternating current power line R;
The current limit component (Z10) is connected in series with the alternative terminal of the single phase bridge rectifier (803), then connected in parallel between the three-phase alternating current power line T and the three-phase alternating current power line S;
--Current limit component (Z10): constituted by one or more than one of the following circuit structures, including:
1) At least one or more than one of the resistant impedance component, inductive impedance component and capacitor impedance component being connected in series, in parallel, or in series and parallel;
The current limit component (Z10) is connected in series with the alternative current terminal of the single phase bridge rectifier (804), then connected in parallel between the three-phase alternating current power line R and the three-phase alternating current power line T;
The current limit component (Z10) is connected in series with the alternative current terminal of the single phase bridge rectifier (802), then connected in parallel between the three-phase alternating current power line S and the three-phase alternating current power line R;
The current limit component (Z10) is connected in series with the alternative terminal of the single phase bridge rectifier (803), then connected in parallel between the three-phase alternating current power line T and the three-phase alternating current power line S;
--Current limit component (Z10): constituted by one or more than one of the following circuit structures, including:
1) At least one or more than one of the resistant impedance component, inductive impedance component and capacitor impedance component being connected in series, in parallel, or in series and parallel;
2) a fixed-current or limited-current control circuit configured by a solid state semi-conductive circuit for controlling the light emitting unit in an analog or chopping manner.
2. The lighting device with optical pulsation suppression by polyphase-driven electric energy as claimed in claim 1, wherein a circuit device in series connected to the current limit component (Z10) and the alternative current terminal of single-phase bridge rectifier is individually installed between the R, S, and T lines of the three phase four wire alternating current power and the neutral line (N) of the three phase four wire alternating current power, then the direct current output terminal of the single-phase bridge rectifier of each phase being homo-polar connected in parallel for jointly driving the direct current electric-driven luminous body (2000), and it mainly consists of:
-- Direct current electric driven luminous body (2000): constituted by a solid state luminous body driven by two or more than two direct current powers, including foundational light emitting units configured by light emitting diodes or organic light emitting diodes and driven by the direct current power, or other solid state luminous bodies capable of being driven by the direct current power;
The current limit component (Z10) is connected in series with the alternative current terminal of the single phase bridge rectifier (802), then connected in parallel between the three-phase four-wire alternating current power line R and the neutral line N of the three-phase four-wire alternating current power;
The current limit component (Z10) is connected in series with the alternative current terminal of the single phase bridge rectifier (803), then connected in parallel between the three-phase four-wire alternating current power line S and the neutral line N of the three-phase four-wire alternating current power;
The current limit component (Z10) is connected in series with the alternative current terminal of the single phase bridge rectifier (804), then connected in parallel between the three-phase four-wire alternating current power line T and the neutral line N of the three-phase four-wire alternating current power;
--Current limit component (Z10): constituted by one or more than one of the following circuit structures, including:
1) at least one or more than one of the resistant impedance component, inductive impedance component and capacitor impedance component being connected in series, in parallel, or in series and parallel;
2) a fixed-current or limited-current control circuit configured by a solid state semi-conductive circuit for controlling the light emitting unit in an analog or chopping manner.
2. The lighting device with optical pulsation suppression by polyphase-driven electric energy as claimed in claim 1, wherein a circuit device in series connected to the current limit component (Z10) and the alternative current terminal of single-phase bridge rectifier is individually installed between the R, S, and T lines of the three phase four wire alternating current power and the neutral line (N) of the three phase four wire alternating current power, then the direct current output terminal of the single-phase bridge rectifier of each phase being homo-polar connected in parallel for jointly driving the direct current electric-driven luminous body (2000), and it mainly consists of:
-- Direct current electric driven luminous body (2000): constituted by a solid state luminous body driven by two or more than two direct current powers, including foundational light emitting units configured by light emitting diodes or organic light emitting diodes and driven by the direct current power, or other solid state luminous bodies capable of being driven by the direct current power;
The current limit component (Z10) is connected in series with the alternative current terminal of the single phase bridge rectifier (802), then connected in parallel between the three-phase four-wire alternating current power line R and the neutral line N of the three-phase four-wire alternating current power;
The current limit component (Z10) is connected in series with the alternative current terminal of the single phase bridge rectifier (803), then connected in parallel between the three-phase four-wire alternating current power line S and the neutral line N of the three-phase four-wire alternating current power;
The current limit component (Z10) is connected in series with the alternative current terminal of the single phase bridge rectifier (804), then connected in parallel between the three-phase four-wire alternating current power line T and the neutral line N of the three-phase four-wire alternating current power;
--Current limit component (Z10): constituted by one or more than one of the following circuit structures, including:
1) at least one or more than one of the resistant impedance component, inductive impedance component and capacitor impedance component being connected in series, in parallel, or in series and parallel;
2) a fixed-current or limited-current control circuit configured by a solid state semi-conductive circuit for controlling the light emitting unit in an analog or chopping manner.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/226,632 US9066378B2 (en) | 2009-06-29 | 2011-09-07 | Lighting device with optical pulsation suppression by polyphase-driven electric energy |
| US13/226,632 | 2011-09-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2788742A1 true CA2788742A1 (en) | 2013-03-07 |
| CA2788742C CA2788742C (en) | 2019-03-05 |
Family
ID=47076092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2788742A Active CA2788742C (en) | 2011-09-07 | 2012-09-05 | Lighting device with optical pulsation suppression by polyphase-driven electric energy |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP2568773B1 (en) |
| JP (1) | JP5959375B2 (en) |
| CN (2) | CN103002632B (en) |
| AU (1) | AU2012216721B2 (en) |
| BR (1) | BR102012022624B1 (en) |
| CA (1) | CA2788742C (en) |
| SG (1) | SG188735A1 (en) |
| TW (2) | TWM460477U (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2788742C (en) * | 2011-09-07 | 2019-03-05 | Tai-Her Yang | Lighting device with optical pulsation suppression by polyphase-driven electric energy |
| WO2015070361A1 (en) * | 2013-11-15 | 2015-05-21 | 钰瀚科技股份有限公司 | Led illuminating device using multiphase alternating current power supply |
| CN103731964A (en) * | 2014-01-17 | 2014-04-16 | 北京大学东莞光电研究院 | Integrated packaging light source structure of three-phase alternating-current driven LED |
| GB2548209B (en) | 2016-03-07 | 2018-03-21 | Intelligent Growth Solutions Ltd | Controllable power and lighting system |
| DE102016012061B4 (en) | 2016-09-29 | 2018-09-06 | Helge Brüggemann | Method and arrangement for operating a semiconductor light source on a 3-phase alternating voltage |
| CN113708653A (en) * | 2020-05-21 | 2021-11-26 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Harmonic generation rectifier and vehicle-mounted power supply system |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0665178B2 (en) * | 1988-02-23 | 1994-08-22 | 株式会社オーク製作所 | Annular electrodeless discharge light source device and lighting method thereof |
| JPH0731150A (en) * | 1993-07-09 | 1995-01-31 | Shindengen Electric Mfg Co Ltd | Switching power supply |
| JPH1197747A (en) * | 1997-09-24 | 1999-04-09 | Db Seiko:Kk | Lighting circuit for ac light emitting diode |
| JP3530359B2 (en) * | 1997-10-03 | 2004-05-24 | 新電元工業株式会社 | Three-phase power factor improving converter |
| US6385057B1 (en) * | 2001-01-31 | 2002-05-07 | Bartronics, Inc. | Power conversion system and method of power conversion |
| US20070090767A1 (en) * | 2005-10-24 | 2007-04-26 | American Electrolier, Inc. | Lighting system with multi-ballast AC-to-DC converter |
| US8664876B2 (en) * | 2009-06-29 | 2014-03-04 | Tai-Her Yang | Lighting device with optical pulsation suppression by polyphase-driven electric energy |
| CN101989817B (en) * | 2009-07-29 | 2014-12-03 | 通用电气公司 | Three-phase LED power supply |
| JP2011077009A (en) * | 2009-10-02 | 2011-04-14 | Fujisaki Denki Kk | Lighting system of tunnel |
| CN101741264A (en) * | 2009-11-22 | 2010-06-16 | 杨义根 | Three-phase power supply way of single-phase electric utensil |
| CN101908828A (en) * | 2010-07-27 | 2010-12-08 | 中国科学院等离子体物理研究所 | Novel circuit topological structure of high-power four-quadrant rectifier |
| CA2788742C (en) * | 2011-09-07 | 2019-03-05 | Tai-Her Yang | Lighting device with optical pulsation suppression by polyphase-driven electric energy |
-
2012
- 2012-09-05 CA CA2788742A patent/CA2788742C/en active Active
- 2012-09-05 SG SG2012065959A patent/SG188735A1/en unknown
- 2012-09-06 TW TW101217211U patent/TWM460477U/en unknown
- 2012-09-06 CN CN201210326832.3A patent/CN103002632B/en active Active
- 2012-09-06 TW TW101132562A patent/TWI583244B/en active
- 2012-09-06 BR BR102012022624-3A patent/BR102012022624B1/en active IP Right Grant
- 2012-09-06 JP JP2012196027A patent/JP5959375B2/en active Active
- 2012-09-06 CN CN2012204517259U patent/CN202759652U/en not_active Expired - Lifetime
- 2012-09-07 AU AU2012216721A patent/AU2012216721B2/en active Active
- 2012-09-07 EP EP12183516.9A patent/EP2568773B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103002632A (en) | 2013-03-27 |
| TW201315288A (en) | 2013-04-01 |
| EP2568773A3 (en) | 2014-01-08 |
| BR102012022624A8 (en) | 2020-06-30 |
| TWI583244B (en) | 2017-05-11 |
| BR102012022624A2 (en) | 2016-02-16 |
| TWM460477U (en) | 2013-08-21 |
| CN202759652U (en) | 2013-02-27 |
| EP2568773B1 (en) | 2016-05-11 |
| BR102012022624B1 (en) | 2020-09-15 |
| CA2788742C (en) | 2019-03-05 |
| JP5959375B2 (en) | 2016-08-02 |
| JP2013058477A (en) | 2013-03-28 |
| CN103002632B (en) | 2017-07-07 |
| SG188735A1 (en) | 2013-04-30 |
| EP2568773A2 (en) | 2013-03-13 |
| AU2012216721A1 (en) | 2013-03-21 |
| AU2012216721B2 (en) | 2016-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2788742C (en) | Lighting device with optical pulsation suppression by polyphase-driven electric energy | |
| TWI487431B (en) | Lighting device with optical pulsation suppression by polyphase-driven electric energy | |
| JP5132749B2 (en) | Light source lighting device and lighting fixture | |
| JP6396336B2 (en) | Power supply circuit that converts the blinking frequency of light emitting diodes | |
| JP6449528B2 (en) | Solid state light emitting device | |
| NZ587357A (en) | Control circuit for pick-up in inductive power transfer system selectively shunts diodes in rectifier bridge to reduce transient disturbances to primary current | |
| TW201233248A (en) | Led driving apparatus and led lighting apparatus | |
| US8907569B2 (en) | Lighting device for an AC power supply | |
| CN106464126A (en) | Primary side controlled led driver with ripple cancellation | |
| KR20150001033A (en) | Power supplying apparatus | |
| CN104780643B (en) | Light emitting diode circuit system with power factor correction and optimization | |
| JP6236490B2 (en) | Current control and drive circuit | |
| CN105517241B (en) | A kind of method and brightness switching device for controlling LED lamp brightness switching | |
| KR102023869B1 (en) | Solid-state light emitting device having controllable multiphase reactive power | |
| US20120062124A1 (en) | Lighting device with optical pulsation suppression by polyphase-driven electric energy | |
| KR20140042413A (en) | Lighting device with optical pulsation suppression by polyphase-driven electric energy | |
| KR20200007063A (en) | Lighting device with optical pulsation suppression by polyphase-driven electric energy | |
| CN102858047A (en) | AC/DC (alternating current/direct current) common-ground illumination drive circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20170905 |