CN102098857A - Ballast resonance ignition method and system - Google Patents
Ballast resonance ignition method and system Download PDFInfo
- Publication number
- CN102098857A CN102098857A CN2010105657717A CN201010565771A CN102098857A CN 102098857 A CN102098857 A CN 102098857A CN 2010105657717 A CN2010105657717 A CN 2010105657717A CN 201010565771 A CN201010565771 A CN 201010565771A CN 102098857 A CN102098857 A CN 102098857A
- Authority
- CN
- China
- Prior art keywords
- low
- frequency
- drive signal
- signal
- drive
- 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.)
- Pending
Links
Images
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The invention discloses a ballast resonance ignition method and system. A gas discharge lamp is connected with a ballast comprising an LC (inductor-capacitor) oscillating circuit and two groups of driving ends; discontinuous high-low frequency hybrid driving signals are applied to the two groups of driving ends until the gas discharge lamp is lighted; each applied high-low frequency hybrid driving signal includes k continuous high-low frequency signal subsegments; each high-low frequency signal subsegment includes n periods of high frequency signals and m.5 periods of low frequency signals; the two groups of driving ends include a first group of driving ends and a second group of driving ends, when the driving signals are high frequency signals, the first group of driving ends are connected, and when the driving signals are low frequency signals, the second group of driving ends are connected. The ballast resonance ignition method and system of the gas discharge lamp, provided by the invention, have the advantages of saving energy sources and also effectively prolonging the service life of the ballast.
Description
Technical field
The invention belongs to electronic information technical field, relate to a kind of ballast ignition method, relate in particular to a kind of gas discharge lamp ballast resonant ignition method; Simultaneously, the invention still further relates to a kind of gas discharge lamp ballast resonant ignition system.
Background technology
In gas discharge lamp ballast, the triggering of gaseous discharge lamp needs a high voltage gas breakdown, also needs the negative electrode of the rapid heating lamp of instantaneous large-current, makes gas discharge to control oneself.
The producing method of puncture voltage is generally the inductance capacitance resonant mode and triggers transformer type.In the inductance capacitance resonant mode, rational selective resonance inductance, resonant capacitance and resonance frequency will produce higher puncture voltage.
See also Fig. 1, when ballast is just switched on, when lamp was not lighted, drive end T1, T2, T3, T4 that can full-bridge added the control signal of lasting low-and high-frequency combination drive signal, makes to produce high pressure by LC resonance the gas breakdown discharge.
The trigger voltage that ceramic gold-halogen lamp, thermolamp need is very high, and general ballast can not produce the trigger voltage that thermolamp needs, need wait until the lamp cooling after, can light.
Summary of the invention
Technical problem to be solved by this invention is: a kind of gas discharge lamp ballast resonant ignition method is provided, but energy savings, the while can effectively prolong the useful life of ballast.
In addition, the present invention also provides a kind of gas discharge lamp ballast resonant ignition system, but energy savings can effectively prolong useful life of ballast simultaneously.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of ballast resonant ignition method, gaseous discharge lamp is connected with ballast, and described ballast comprises LC oscillating circuit, two groups of drive ends;
Apply non-lasting low-and high-frequency combination drive signal at two groups of drive ends, until lighting described gaseous discharge lamp;
The low-and high-frequency combination drive signal that at every turn applies comprises k continuous low-and high-frequency signal subspace section;
Each low-and high-frequency signal subspace section comprises the high-frequency signal in n cycle, and the low frequency signal in cycle m.5;
Wherein, k>0, n>0, m 〉=0; N, m are integer;
Two groups of drive ends comprise first group of drive end, second group of drive end, first group of drive end conducting when described drive signal is high, second group of drive end conducting when described drive signal is low.
As a preferred embodiment of the present invention, adjacent apply between the low-and high-frequency combination drive signal for twice do not apply drive signal, perhaps applies the drive signal of no high frequency.
As a preferred embodiment of the present invention, the time that at every turn applies low-and high-frequency combination drive signal is identical.
As a preferred embodiment of the present invention, the identical time of every interval applies low-and high-frequency combination drive signal at two groups of drive ends, until lighting gaseous discharge lamp.
As a preferred embodiment of the present invention, described method comprises the steps:
S1, apply the low-and high-frequency combination drive signal of setting-up time at two groups of drive ends; The low-and high-frequency combination drive signal that at every turn applies comprises k continuous low-and high-frequency signal subspace section; Each low-and high-frequency signal subspace section comprises the high-frequency signal in n cycle, and the low frequency signal in cycle m.5;
S2, judge whether gaseous discharge lamp is lighted,, go to step S4, otherwise go to step S3 if light;
S3, idle setting-up time perhaps apply the drive signal of no high frequency in setting-up time; Go to step S1;
S4, end.
A kind of gas discharge lamp ballast resonant ignition system, gaseous discharge lamp is connected with ballast, and described system comprises ballast, frequency control unit; Described ballast comprises LC oscillating circuit, two groups of drive ends;
Apply non-lasting low-and high-frequency combination drive signal at two groups of drive ends, until lighting described gaseous discharge lamp;
The low-and high-frequency combination drive signal that at every turn applies comprises k continuous low-and high-frequency signal subspace section;
Each low-and high-frequency signal subspace section comprises the high-frequency signal in n cycle, and the low frequency signal in cycle m.5;
Wherein, k>0, n>0, m 〉=0; N, m are integer;
Two groups of drive ends comprise first group of drive end, second group of drive end, first group of drive end conducting when described drive signal is high, second group of drive end conducting when described drive signal is low.
As a preferred embodiment of the present invention, adjacent apply between the low-and high-frequency combination drive signal for twice do not apply drive signal, perhaps applies the drive signal of no high frequency.
As a preferred embodiment of the present invention, it is identical that described frequency control unit applies the time of low-and high-frequency combination drive signal at every turn.
As a preferred embodiment of the present invention, the identical time of the every interval of described frequency control unit applies low-and high-frequency combination drive signal at two groups of drive ends, until lighting gaseous discharge lamp.
Beneficial effect of the present invention is: the gas discharge lamp ballast resonant ignition method and system that the present invention proposes, but energy savings, the while can effectively prolong the useful life of ballast.
The present invention can not produce high trigger voltage by apply non-lasting low-and high-frequency combination drive signal at the ballast driven end always.Because when lamp started, except the high trigger voltage of needs, the big electric current that also needs to continue heated rapidly lamp.
The present invention applies low-and high-frequency combination drive signal in a period of time, do not apply low-and high-frequency combination drive signal in a period of time; If lamp is a thermolamp,,, still need just can light after the lamp cooling because this voltage can not puncture thermolamp even produced continuous trigger voltage.
The present invention can also adjust the time that applies low-and high-frequency combination drive signal, as increasing to 4.5 cycles from 2.5 cycles, the trigger voltage that makes its generation when low any trigger voltage can make lamp puncture, just can not produce high trigger voltage from low to high more yet; Circuit there is the certain protection effect.
The periodicity of low-and high-frequency combination drive signal is preferably an x.5 cycle, guarantees that the resonance point positive voltage is identical with the probability that negative voltage occurs.
The time period that applies low-and high-frequency combination drive signal is adjustable, and the time period that applies low-and high-frequency combination drive signal during beginning is longer.If cold lamp has time enough to guarantee that lamp triggers.If thermolamp begins and can not light, the time period that then applies low-and high-frequency combination drive signal is shorter, allows lamp cool off, and does not need too much trigger impulse this moment.
Description of drawings
Fig. 1 is the connection diagram of existing ballast and lamp.
Fig. 2 is the flow chart of ignition method of the present invention.
Fig. 3 is the flow chart of ignition method among the embodiment two.
Embodiment
Describe the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing.
Embodiment one
The present invention has disclosed a kind of ballast resonant ignition method, and gaseous discharge lamp is connected with ballast, and described ballast comprises LC oscillating circuit, two groups of drive ends; Apply non-lasting low-and high-frequency combination drive signal at two groups of drive ends, until lighting described gaseous discharge lamp.
Continuous low-and high-frequency signal subspace section that the low-and high-frequency combination drive signal that at every turn applies comprises some (as k); Each low-and high-frequency signal subspace section comprises the high-frequency signal in n cycle, and the low frequency signal in cycle m.5; Wherein, k>0, n>0, m 〉=0; N, m are integer.Two groups of drive ends comprise first group of drive end, second group of drive end, first group of drive end conducting when described drive signal is high, second group of drive end conducting when described drive signal is low.
Adjacent apply between the low-and high-frequency combination drive signal for twice do not apply drive signal, perhaps applies the drive signal of no high frequency.
In the implementation of the present invention, the time that at every turn applies low-and high-frequency combination drive signal is identical; As each application time is 3 seconds, perhaps 5 seconds.Certainly, the time that at every turn applies low-and high-frequency combination drive signal also can be different.In this time in 3 second, two groups of drive ends are applied non-lasting low-and high-frequency combination drive signal, comprise the continuous low-and high-frequency signal subspace section of k (may be for hundreds of or thousands of) as, k; Low-and high-frequency signal subspace section can comprise the high-frequency signal in 2 cycles, the low frequency signal in 0.5 cycle.And for example, low-and high-frequency signal subspace section can comprise the high-frequency signal in 4 cycles, the low frequency signal in 2.5 cycles; Or the like.
In addition, the identical time of every interval applies low-and high-frequency combination drive signal at two groups of drive ends, until lighting gaseous discharge lamp.As each interval 3 seconds, perhaps 5.5 seconds.Certainly, blanking time also can be different.
See also Fig. 2, in the present embodiment, described method comprises the steps:
S1, apply the low-and high-frequency combination drive signal of setting-up time at two groups of drive ends; The low-and high-frequency combination drive signal that at every turn applies comprises k continuous low-and high-frequency signal subspace section; Each low-and high-frequency signal subspace section comprises the high-frequency signal in n cycle, and the low frequency signal in cycle m.5;
S2, judge whether gaseous discharge lamp is lighted,, go to step S4, otherwise go to step S3 if light;
S3, idle setting-up time (perhaps in setting-up time, applying the drive signal of no high frequency); Go to step S1;
S4, end.
More than introduced gas discharge lamp ballast resonant ignition method of the present invention, the present invention also discloses a kind of gas discharge lamp ballast resonant ignition system when disclosing above-mentioned ignition method.
Gaseous discharge lamp is connected with ballast, and described system comprises ballast, frequency control unit; Described ballast comprises LC oscillating circuit, two groups of drive ends.
Apply non-lasting low-and high-frequency combination drive signal at two groups of drive ends, until lighting described gaseous discharge lamp; The low-and high-frequency combination drive signal that at every turn applies comprises k continuous low-and high-frequency signal subspace section; Each low-and high-frequency signal subspace section comprises the high-frequency signal in n cycle, and the low frequency signal in cycle m.5; Wherein, k>0, n>0, m 〉=0; N, m are integer.
Two groups of drive ends comprise first group of drive end, second group of drive end, first group of drive end conducting when described drive signal is high, second group of drive end conducting when described drive signal is low.
In the implementation of the present invention, the time that at every turn applies low-and high-frequency combination drive signal is identical; As each application time is 3 seconds, perhaps 5 seconds.Certainly, the time that at every turn applies low-and high-frequency combination drive signal also can be different.In this time in 3 second, two groups of drive ends are applied non-lasting low-and high-frequency combination drive signal, comprise the continuous low-and high-frequency signal subspace section of k (may be for hundreds of or thousands of) as, k; Low-and high-frequency signal subspace section can comprise the high-frequency signal in 2 cycles, the low frequency signal in 0.5 cycle.And for example, low-and high-frequency signal subspace section can comprise the high-frequency signal in 4 cycles, the low frequency signal in 2.5 cycles; Or the like.
In addition, the identical time of every interval applies low-and high-frequency combination drive signal at two groups of drive ends, until lighting gaseous discharge lamp.As each interval 3 seconds, perhaps 5.5 seconds.Certainly, blanking time also can be different.
In sum, the gas discharge lamp ballast resonant ignition method and system that the present invention proposes, but energy savings, the while can effectively prolong the useful life of ballast.
Embodiment two
In the present embodiment, apply non-lasting low-and high-frequency combination drive signal at two groups of drive ends, until lighting described gaseous discharge lamp.The low-and high-frequency combination drive signal that at every turn applies comprises the low-and high-frequency signal subspace section of plurality of continuous; Each low-and high-frequency signal subspace section comprises the high-frequency signal in n cycle, and the low frequency signal in cycle m.5; Wherein, n>0, m 〉=0; N, m are integer; N increases along with the variation of number of times in the set point number scope or reduces.
Two groups of drive ends comprise first group of drive end, second group of drive end, first group of drive end conducting when described drive signal is high, second group of drive end conducting when described drive signal is low.
Adjacent apply between the low-and high-frequency combination drive signal for twice do not apply drive signal, perhaps applies the drive signal of no high frequency.
In the implementation of the present invention, the time that at every turn applies low-and high-frequency combination drive signal is identical; As each application time is 3 seconds, perhaps 5 seconds.Certainly, the time that at every turn applies low-and high-frequency combination drive signal also can be different.In this time in 3 second, two groups of drive ends are applied non-lasting low-and high-frequency combination drive signal, comprise the continuous low-and high-frequency signal subspace section of k (may be for hundreds of or thousands of) as, k; Low-and high-frequency signal subspace section can comprise the high-frequency signal in 2 cycles, the low frequency signal in 0.5 cycle.And for example, low-and high-frequency signal subspace section can comprise the high-frequency signal in 4 cycles, the low frequency signal in 2.5 cycles; Or the like.
In the present embodiment, when applying number of times j smaller or equal to set point number 3, the periodicity n that applies high-frequency signal increases along with the variation that applies number of times j, as first low-and high-frequency combination drive signal there are 2 high-frequency signal cycles, second low-and high-frequency combination drive signal has 3 high-frequency signal cycles, the 3rd low-and high-frequency combination drive signal has 4 high-frequency signal cycles, all is later on that 4 high-frequency signal cycles are arranged.
Simultaneously, the time that at every turn applies low-and high-frequency combination drive signal is constant, and perhaps, application time increases along with the variation of number of times in the set point number scope or reduces.
In addition, the adjacent blanking time that applies low-and high-frequency combination drive signal for twice is constant, perhaps increasing or decreasing in the set point number scope.
In the present embodiment, see also Fig. 3, described ignition method comprises the steps: S101, applies the low-and high-frequency combination drive signal of setting-up time at two groups of drive ends; The low-and high-frequency combination drive signal that at every turn applies comprises the low-and high-frequency signal subspace section of plurality of continuous; When applying number of times j smaller or equal to set point number, the periodicity that applies high-frequency signal increases along with the variation that applies number of times j.As, as j during smaller or equal to set point number 3, the periodicity of high-frequency signal can be n
0+ k (j-1).After j>3, the periodicity that applies high-frequency signal just no longer changes.Example, first low-and high-frequency combination drive signal has 2 high-frequency signal cycles, and second low-and high-frequency combination drive signal has 3 high-frequency signal cycles, and the 3rd low-and high-frequency combination drive signal has 4 high-frequency signal cycles, all is later on that 4 high-frequency signal cycles are arranged.
S102, judge whether gaseous discharge lamp is lighted,, go to step S104, otherwise go to step S103 if light.
S103, idle setting-up time perhaps apply the drive signal of no high frequency in setting-up time, the number of times j that applies high-frequency signal increases 1; Go to step S101.
S104, end.
More than introduced gas discharge lamp ballast resonant ignition method in the present embodiment, the present invention also discloses a kind of gas discharge lamp ballast resonant ignition system when disclosing above-mentioned ignition method.
Gaseous discharge lamp is connected with ballast, and described system comprises ballast, frequency control unit; Described ballast comprises LC oscillating circuit, two groups of drive ends.
Described frequency control unit applies non-lasting high-frequency resonant at two groups of drive ends, until lighting gaseous discharge lamp; Described high-frequency resonant is high-frequency signal and a low frequency signal at interval.The duration of the high-frequency resonant that applies for the i time is greater than the duration of the high-frequency resonant that applies for the i-1 time; Wherein, i is the integer greater than 1.
Preferably, the time that described frequency control unit applies high-frequency resonant at every turn is n+0.5 cycle, and wherein, n is the integer more than or equal to 0.Adjacent to apply between the high-frequency resonant blanking time for twice identical, perhaps increases progressively one by one blanking time, perhaps successively decreases one by one blanking time.
Here description of the invention and application is illustrative, is not to want with scope restriction of the present invention in the above-described embodiments.Here the distortion of disclosed embodiment and change are possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present invention or substantive characteristics, and the present invention can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.Under the situation that does not break away from the scope of the invention and spirit, can carry out other distortion and change here to disclosed embodiment.
Claims (9)
1. a ballast resonant ignition method is characterized in that, gaseous discharge lamp is connected with ballast, and described ballast comprises LC oscillating circuit, two groups of drive ends;
Apply non-lasting low-and high-frequency combination drive signal at two groups of drive ends, until lighting described gaseous discharge lamp;
The low-and high-frequency combination drive signal that at every turn applies comprises the low-and high-frequency signal subspace section of plurality of continuous;
Each low-and high-frequency signal subspace section comprises the high-frequency signal in n cycle, and the low frequency signal in cycle m.5;
Wherein, n>0, m 〉=0; N, m are integer;
Two groups of drive ends comprise first group of drive end, second group of drive end, first group of drive end conducting when described drive signal is high, second group of drive end conducting when described drive signal is low.
2. ballast resonant ignition method according to claim 1 is characterized in that:
Adjacent apply between the low-and high-frequency combination drive signal for twice do not apply drive signal, perhaps applies the drive signal of no high frequency.
3. ballast resonant ignition method according to claim 1 is characterized in that:
The time that at every turn applies low-and high-frequency combination drive signal is identical.
4. according to the described ballast resonant ignition method of one of claim 1 to 3, it is characterized in that:
The identical time of every interval applies low-and high-frequency combination drive signal at two groups of drive ends, until lighting gaseous discharge lamp; Perhaps blanking time increasing or decreasing in the set point number scope.
5. according to the described ballast resonant ignition method of one of claim 1 to 3, it is characterized in that:
Described method comprises the steps:
S1, apply the low-and high-frequency combination drive signal of setting-up time at two groups of drive ends; The low-and high-frequency combination drive signal that at every turn applies comprises k continuous low-and high-frequency signal subspace section; Each low-and high-frequency signal subspace section comprises the high-frequency signal in n cycle, and the low frequency signal in cycle m.5; Wherein, k>0;
S2, judge whether gaseous discharge lamp is lighted,, go to step S4, otherwise go to step S3 if light;
S3, idle setting-up time perhaps apply the drive signal of no high frequency in setting-up time; Go to step S1;
S4, end.
6. a ballast resonant ignition system is characterized in that, gaseous discharge lamp is connected with ballast, and described system comprises ballast, frequency control unit; Described ballast comprises LC oscillating circuit, two groups of drive ends;
Apply non-lasting low-and high-frequency combination drive signal at two groups of drive ends, until lighting described gaseous discharge lamp;
The low-and high-frequency combination drive signal that at every turn applies comprises continuous low-and high-frequency signal subspace section;
Each low-and high-frequency signal subspace section comprises the high-frequency signal in n cycle, and the low frequency signal in cycle m.5;
Wherein, n>0, m 〉=0; N, m are integer;
Two groups of drive ends comprise first group of drive end, second group of drive end, first group of drive end conducting when described drive signal is high, second group of drive end conducting when described drive signal is low.。
7. ballast resonant ignition system according to claim 6 is characterized in that:
Adjacent apply between the low-and high-frequency combination drive signal for twice do not apply drive signal, perhaps applies the drive signal of no high frequency.
8. ballast resonant ignition system according to claim 6 is characterized in that:
It is identical that described frequency control unit applies the time of low-and high-frequency combination drive signal at every turn.
9. according to the described ballast resonant ignition system of one of claim 6 to 8, it is characterized in that:
The identical time of the every interval of described frequency control unit applies low-and high-frequency combination drive signal at two groups of drive ends, until lighting gaseous discharge lamp; Perhaps blanking time increasing or decreasing in the set point number scope.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010105657717A CN102098857A (en) | 2010-11-26 | 2010-11-26 | Ballast resonance ignition method and system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010105657717A CN102098857A (en) | 2010-11-26 | 2010-11-26 | Ballast resonance ignition method and system |
Publications (1)
Publication Number | Publication Date |
---|---|
CN102098857A true CN102098857A (en) | 2011-06-15 |
Family
ID=44131658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2010105657717A Pending CN102098857A (en) | 2010-11-26 | 2010-11-26 | Ballast resonance ignition method and system |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN102098857A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1456028A (en) * | 2001-01-12 | 2003-11-12 | 松下电工株式会社 | Ballast for a discharge lamp |
CN1572125A (en) * | 2001-10-18 | 2005-01-26 | 皇家飞利浦电子股份有限公司 | Circuit arrangement for operating a discharge lamp |
US20090315470A1 (en) * | 2006-08-23 | 2009-12-24 | Panasonic Electric Works Co., Ltd. | High-pressure discharge lamp lighting device and lighting fixture using the same |
-
2010
- 2010-11-26 CN CN2010105657717A patent/CN102098857A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1456028A (en) * | 2001-01-12 | 2003-11-12 | 松下电工株式会社 | Ballast for a discharge lamp |
CN1572125A (en) * | 2001-10-18 | 2005-01-26 | 皇家飞利浦电子股份有限公司 | Circuit arrangement for operating a discharge lamp |
US20090315470A1 (en) * | 2006-08-23 | 2009-12-24 | Panasonic Electric Works Co., Ltd. | High-pressure discharge lamp lighting device and lighting fixture using the same |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8324829B2 (en) | Startup control for a high pressure discharge lamp ballast | |
CN101035403B (en) | Flyback ballast for fluorescent lamp | |
EP2476297A1 (en) | Operating an electrodeless discharge lamp | |
CN101272654A (en) | Driving and regulating method and device for bipolar transistor in electric ballast | |
CN102098857A (en) | Ballast resonance ignition method and system | |
CN102098860A (en) | Method and system for ballast resonance ignition of gas discharge lamp | |
JP2002164190A (en) | Driving device and method of cathode-discharge tube | |
CN201585192U (en) | Road lighting system capable of reducing starting surge current | |
ATE499823T1 (en) | CONTROL FOR A GAS DISCHARGE LAMP | |
TWI455652B (en) | Dielectric barrier discharge lamp system and driving method thereof having relatively better performance in startup and re-startup of dimming | |
Liu et al. | A novel ZVS double switch flyback inverter and pulse controlled dimming methods for flat DBD lamp | |
Marchesan et al. | An electronic ballast to supply automotive HID lamps in a low frequency square waveform | |
CN101604605A (en) | The ageing method of display screen | |
CN102065622B (en) | Isolation electrodeless lamp | |
CN2612205Y (en) | Dual-purpose electronic ballast for fluorescent lamp and gas discharge lamp | |
CN103547049B (en) | A kind of method of electric ballast LC resonant ignition, device and circuit | |
CN205017223U (en) | Mode of vibration boost circuit is come to an agreement to fourth cycle stationary flow | |
CN103957651A (en) | High-frequency HID electronic ballast with self-adaptation circuit and application thereof | |
CN202014408U (en) | Electronic ballast for high pressure gas discharge lamp | |
CN102892246B (en) | Discharge lamp system and control method thereof | |
CN110139453B (en) | Discharge lamp lighting device and lighting method thereof | |
CN102497714A (en) | Two-stage alternating current voltage transformation electrodeless lamp | |
CN202444684U (en) | Metal halide lamp electronic ballast | |
CN203015256U (en) | Light-adjustable HID electronic ballast based on monitoring function of internet of things | |
CN103167711B (en) | Electronic ballast |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110615 |