CN100566500C - A kind of electronic ballast for fluoresent lamp of using silicon controlled dimmer for light control - Google Patents
A kind of electronic ballast for fluoresent lamp of using silicon controlled dimmer for light control Download PDFInfo
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- CN100566500C CN100566500C CNB2004101008986A CN200410100898A CN100566500C CN 100566500 C CN100566500 C CN 100566500C CN B2004101008986 A CNB2004101008986 A CN B2004101008986A CN 200410100898 A CN200410100898 A CN 200410100898A CN 100566500 C CN100566500 C CN 100566500C
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- 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
- H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
- H05B41/3925—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by frequency variation
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Abstract
The present invention relates to a kind of electronic ballast for fluoresent lamp of using silicon controlled dimmer for light control, comprising: filtering and rectification circuit are connected with city's AC power; FREQUENCY CONTROL and switching circuit include a controllable frequency and produce the integrated circuit block IC of switch triggering signal; Output circuit, its input is connected with the output of FREQUENCY CONTROL and switching circuit; Dim signal treatment circuit, circuit are connected on the input of the output of filtering and rectification circuit and FREQUENCY CONTROL and switching circuit; The high direct voltage stabilizing circuit, the input of circuit connects the output of filtering and rectification circuit, and output is connected with the input of FREQUENCY CONTROL and switching circuit, and feedback end is connected with output circuit.Because three special circuits that adopt are simple and easy, element is less, so the decline of the cost of electric ballast, and volume reduces, and adds that dimming behavior is stable, applies easily, is particularly suitable for being applied to incorporate compact fluorescent lamp.
Description
Technical field
The present invention relates to a kind of light modulating device of fluorescent lamp, the controllable silicon dimmer that especially relates to a kind of application popularization is stablized the electronic ballast for fluoresent lamp of light modulation to fluorescent lamp.
Background technology
People wish that very early fluorescent lamp can realize light modulation, carry out light modulation such as the controllable silicon phase modulation dimmer as the incandescent lamp application popularization, as shown in Figure 1.Yet,, use common controllable silicon phase modulation dimmer to be difficult to realize because fluorescent lamp is nonlinear and have a negative resistance charactertistic load.Along with the development of electric ballast technology, using silicon controlled phase modulation dimmer has report in recent years to the technology that fluorescent lamp carries out light modulation on some patent documentations and technical journal, also occurred some relevant products on market.But the product of prior art all exists following shortcoming: when dimming behavior reaches stable, all even when not glimmering, then the complex circuit of its formation, element is many, cost is high, volume is big, and be difficult to apply; The simple product of circuit when light modulation then regular meeting flicker appears and light modulation inhomogeneous, so to seek better brightness adjustment control circuit be the direction that develops on the light regulating technology for fluorescent lamp.
In China Patent No. CN01269679.X, disclosed a kind of fluorescent lamp of using silicon controlled phase modulation dimmer for light control,, on dimming effect and performance, also had certain deficiency though this fluorescent lamp can reach the purpose of phase modulation light modulation.
Summary of the invention
Technical problem to be solved by this invention is to provide electronic ballast for fluoresent lamp a kind of novelty, using silicon controlled dimmer for light control, overcome complex circuit in the prior art, element is many, cost is high, volume is big, and be difficult to apply, or the problem of phenomenons such as flicker and light modulation be inhomogeneous appears often.
To achieve these goals, the invention provides a kind of electronic ballast for fluoresent lamp of using silicon controlled dimmer for light control, its characteristics are, comprising: filtering and rectification circuit are connected with city's AC power; One FREQUENCY CONTROL and switching circuit, described circuit include a controllable frequency and produce the integrated circuit block IC of switch triggering signal, two switching transistor Q1, Q2 and corresponding resistance, capacity cell; One output circuit comprises inductance, electric capacity, and its input is connected with the output of described FREQUENCY CONTROL and switching circuit; One dim signal treatment circuit, described circuit are connected on the input of the output of described filtering and rectification circuit and described FREQUENCY CONTROL and switching circuit; One direct current high-voltage stabilizing circuit, the input of described circuit connects the output of described filtering and rectification circuit, and output is connected with the input of described FREQUENCY CONTROL and switching circuit, and feedback end is connected with described output circuit.
The electronic ballast for fluoresent lamp of above-mentioned using silicon controlled dimmer for light control, its characteristics are, also comprise: control is negative-feedback circuit frequently, and the output of described circuit is connected on the IC-6 of described FREQUENCY CONTROL and switching circuit, and input connects described output circuit.
The electronic ballast for fluoresent lamp of above-mentioned using silicon controlled dimmer for light control, its characteristics are, described dim signal treatment circuit comprises a voltage divider and a voltage controlled oscillator, described voltage divider is made up of the resistance R 1 that is cascaded, triode Q3 and resistance R 4, described voltage controlled oscillator is by voltage-stabiliser tube Z2, Z3, diode D8, resistance R 6, R7, R8, capacitor C 9 is formed with the end that connects that is connected integrated circuit block IC.
The electronic ballast for fluoresent lamp of above-mentioned using silicon controlled dimmer for light control, its characteristics are, described high direct voltage stabilizing circuit by diode in series D6, D7 and wherein the capacitor C 19 that is connected in the middle of described diode D6, the D7 of an end form, the other end is connected with described output circuit.
The electronic ballast for fluoresent lamp of above-mentioned using silicon controlled dimmer for light control, its characteristics are, described control negative-feedback circuit frequently mainly is made up of RC parallel circuits, R15, diode D11 and the transistor Z5 of two series connection, the RC parallel circuits of described two series connection is R16, C18 and R17, C17, and described diode D11, transistor Z5, resistance R 17, capacitor C 17 are formed the lamp current negative-feedback circuit.
The electronic ballast for fluoresent lamp of above-mentioned using silicon controlled dimmer for light control, its characteristics are that described integrated circuit block IC is L6574.
Effect of the present invention is that because three special circuits that adopt are simple and easy, element is less, so the decline of the cost of electric ballast, and volume reduces, and adds that dimming behavior is stable, applies easily, is particularly suitable for being applied to incorporate compact fluorescent lamp.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Circuit connecting wire road schematic diagram when Fig. 1 carries out light modulation for using silicon controlled phase modulation dimmer to fluorescent lamp;
Fig. 2 is the circuit block diagram of the electronic ballast for fluoresent lamp of the using silicon controlled phase modulation dimmer of the present invention;
Fig. 3 is the circuit theory diagrams of the electronic ballast for fluoresent lamp of dimmer application controllable silicon phase modulation dimmer of the present invention;
Light modulation phase angle when Fig. 4 makes nonlinear resistance for use triode in the dim signal treatment circuit and the relation curve of light modulation control frequency voltage (indicating 1 among the figure) and high direct voltage (indicating 2 among the figure):
Fig. 5 is the relation curve of light modulation phase angle and light modulation control frequency voltage and high direct voltage when using common linear resistance in the dim signal treatment circuit;
Fig. 6 is another filtering and the rectification circuit figure of the electronic ballast for fluoresent lamp of the using silicon controlled phase modulation dimmer of the present invention;
Fig. 7 is the another kind of dim signal treatment circuit figure of the electronic ballast for fluoresent lamp of the using silicon controlled phase modulation dimmer of the present invention;
Fig. 8 be among the present invention the dim signal treatment circuit at the circuit theory diagrams of the another kind of application example of the fluorescent lamp of using silicon controlled phase modulation dimmer.
Embodiment
See also Fig. 2 and Fig. 3, the electronic ballast for fluoresent lamp of using silicon controlled dimmer for light control of the present invention comprises a filtering and rectification circuit 1, FREQUENCY CONTROL and switching circuit 2, output circuit 3, dim signal treatment circuit 4 and high direct voltage stabilizing circuit 5, wherein:
Filtering and rectification circuit 1 comprise filter element, pi filter and bridge rectifier, and its input is connected with city's AC power by dimmer, and effect is that an elimination High-frequency Interference electric wave and an alternating voltage of input are converted to dc pulse moving voltage.Filtering and rectification circuit 1 can also comprise as shown in Figure 6: resistance R 18 is directly and on input, after resistance R 19 and the capacitances in series and on input.Select the effect that suitable resistance and electric capacity can improve light modulation, also can make dimmable fluorescent lamp be suitable for more controllable silicon phase modulation dimmer.
FREQUENCY CONTROL and switching circuit 2 include a controllable frequency and produce the integrated circuit block IC of switch triggering signal, and its model is L6574, and its input VS is connected to the output B of filtering and rectification circuit by resistance R 3, for IC provides operating voltage.Two switching transistor Q1, Q2 that are made of field-effect transistor and corresponding resistance, capacity cell, its input is connected to the output of the following high direct voltage stabilizing circuit 5 that will illustrate, to produce controllable high frequency voltage.
Dim signal treatment circuit 4, this circuit are innovation circuit of the present invention.It is connected on another input IC-7 of the output of filtering and rectification circuit and FREQUENCY CONTROL and switching circuit, and voltage is more little frequently so that enter the light modulation control of integrated circuit block IC, and then the operating frequency of integrated circuit block IC is high more.The dim signal treatment circuit comprises that a voltage divider and of being made up of the resistance R 1 that is cascaded, triode Q3 and resistance R 4 is by voltage-stabiliser tube Z2, Z3, diode D8, resistance R 6, R7, R8, voltage controlled oscillator that capacitor C 9 is formed and the end IC-7 that connects that connects integrated circuit block IC form.This voltage divider can be obtained the light modulation phase angle and the light modulation control frequency voltage relationship of needed, rapid nonlinear change.The sampled point B of dim signal treatment circuit 4 is the output of filtering and rectification circuit, and the output dc pulse moving voltage, and the effective value of this voltage and the phase angle of controllable silicon dimmer are inversely proportional to, and promptly phase angle is big more, and voltage effective value is more little.Through the processing of oversampling circuit, when phase angle was big more, the output voltage of control frequency was more little, and the light modulation control frequency voltage that enters integrated circuit block IC is more little, and then the operating frequency of integrated circuit block IC is high more.So when phase angle change, the also corresponding change of the operating frequency of lamp, thus reach the purpose of light modulation.Use a triode Q3 in the voltage divider of this circuit, its objective is phase angle and the light modulation control desirable state of relation curve acquisition of voltage frequently that makes.For example, after connecting biasing resistance R2 on the base stage of triode Q3, it just becomes a resistance that becomes nonlinear change with the voltage that B is ordered, and we are needed just in the rapid variation of resistance, can realize the uniform and stable light modulation of not glimmering.
Q3 in the dim signal treatment circuit 4 is except with can also being field effect transistor the triode as shown in Figure 7, make the voltage divider of the resistance R 1, field effect transistor Q3 and resistance R 4 compositions that are cascaded can obtain needed, the light modulation phase angle of rapid nonlinear change and light modulation control be voltage relationship frequently, thereby also can adjust to same desirable state.And in Another Application example as shown in Figure 8, dim signal treatment circuit 4 comprises that a voltage divider and of being made up of the resistance R 22 that is cascaded, triode Q3 and resistance R 24 is by voltage-stabiliser tube Z2, Z3, diode D7, resistance R 25, R26, R27, the voltage controlled oscillator that capacitor C 10 is formed and connect integrated circuit block IC (model is UBA2014) meet end IC-7 and IC-15 forms.This dim signal treatment circuit 4 can be stablized the operating state of light modulation process, avoids occurring flicker, the more effective dimming effect that improves.
The input of high direct voltage stabilizing circuit 5 connects the output of filtering and rectification circuit, output is connected with FREQUENCY CONTROL and switching circuit 2, for it provides stable high direct voltage, feedback end is connected with output circuit 3, the high-frequency electrical energy of output circuit 3 is fed back to the energy storage capacitor of high direct voltage stabilizing circuit 5.High direct voltage stabilizing circuit 5 by diode in series D6, D7 and one wherein the capacitor C 19 that is connected in the middle of diode D6, the D7 of an end form, be connected to take out high-frequency energy and to pass through C19 with output circuit from the end (see figure 3) of C14, energy enters storage capacitor C4 after the D6 rectification again, thereby avoids the flicker of lamp.
In a preferred embodiment, electronic ballast for fluoresent lamp of the present invention also comprises control negative-feedback circuit 6 frequently, its output is connected on the IC-6 of FREQUENCY CONTROL and switching circuit, input connects output circuit with when the electric current of fluorescent lamp during because of the too urgent decline of regulation and control, the dropping signal negative feedback of lamp current to control frequency integrated circuit block IC.Control frequency negative-feedback circuit 6 is made up of RC parallel circuits (being R16, C18 and R17, C17), R15, diode D11 and the transistor Z5 of two series connection.The circuit of being made up of R15, R16, R17, C17, C18 provides a voltage to IC-6, and to satisfy the required threshold voltage of integrated circuit block IC, diode D11, transistor Z5, R17, C17 form the lamp current negative-feedback circuit.Circuit 6 is connected to integrated circuit block IC-VS and IC-10 by resistance R 15.When the electric current of lamp fell too urgent decline because of regulation and control, flicker appearred in lantern festival, for the dropping signal negative feedback of this lamp current to control frequently on the IC, thereby prevent the appearance of glimmering.
What the present invention was designed is an electronic ballast for fluoresent lamp that can be applicable to controllable silicon phase modulation dimmer, it can combine assembling with fluorescent tube becomes an incorporate fluorescent lamp, also can be electric ballast independently, when work, be connected the back and work with fluorescent lamp.No matter be incorporate or separation, when needs carry out light modulation, then to connect one " controllable silicon phase modulation dimmer " and just can carry out light modulation at circuit, see shown in Figure 1.
The present invention is an applying FM dimming mode and realize light modulation to fluorescent lamp, the principle of frequency modulation dimming mode is: because in the operating circuit of fluorescent lamp, a ballast inductance device must be set, lamp works is played the ballast effect, burn out fluorescent tube in order to avoid electric current is excessive.When operating frequency raise, the induction reactance of inductor also raise, and made by lamp tube current to descend, and the light of fluorescent tube is logical also and then to descend, thereby realized the light modulation of lamp.
It is a special technology that using silicon controlled phase modulation dimmer carries out light modulation to fluorescent lamp, and the difficult point of technology is that particularly fluorescent lamp is near before extinguishing when light modulation drops to the middle and later periods, and flicker can appear in fluorescent lamp.For solving this difficult problem, through practice with analyse in depth, the flicker of finding this type is owing to multiple reason causes, first applying FM dimming mode, and when light modulation entered the later stage, because that high direct voltage drops to is very low, fluorescent tube was difficult to keep discharge stably; Its two be since fluorescent lamp be a special nonlinear load, when being used with controllable silicon phase modulation dimmer, in the middle and later periods of light modulation, the voltage waveform that is input to electric ballast can produce gross distortion, even the distortion of jumping characteristic appears, this instability of lamp tube power supply just occurs and produces flicker.According to above analysis and practice, solution adopts three technical measures.First technical measures are the variation relation of light modulation phase angle and light modulation control frequency voltage, change into relation jumpy from slow variation relation, light modulation control frequency voltage is descended quickly, that is be that operating frequency is risen quickly, lamp current decline is more like this, the power supply load reduction, and high direct voltage descends seldom, therefore, still be in higher direct voltage.Second measure is that the high direct voltage in the electric ballast is carried out the high-frequency energy feedback stability, makes high direct voltage in the light modulation process obtain certain compensation and improves.To be for preventing produce that resonance causes flicker and the frequency negative-feedback circuit that is provided with because light modulation when too urgent, sharply descends lamp tube current for the 3rd measure, to prevent the flicker of lamp.
For realizing good light modulation and prevent above-mentioned three measures of the flicker of lamp that the present invention has adopted the circuit of three special uses.First special circuit is a dim signal treatment circuit 4, its objective is the ideal relationship curve of obtaining light modulation phase angle and light modulation control frequency voltage.As everyone knows, the waveform that flows to the input voltage of fluorescent lamp behind the controlled phase modulation dimmer of process is a cut angle waveform, increase along with the light modulation phase angle, the cut angle is also big more, the effective voltage value that then is input to fluorescent lamp is few more, so the light modulation phase angle is into anti-proportionate relationship with the input effective voltage value.Input voltage is through (see and indicate 1 among Fig. 3) after High frequency filter and the rectification, the voltage of order at B be one identical with input voltage waveform, but have only forward, the voltage that the frequency raising is 1 times.Dim signal is that the effective value voltage that B is ordered is and the inversely proportional relation of light modulation phase angle from the sampling of B point.The voltage divider that the signal of telecommunication that B is ordered is formed by R1, Q3 and R4.Q3 is a triode, connect biasing resistance R2 after, here it just becomes a resistance that becomes nonlinear change with the voltage that B is ordered, we are needed just in the rapid variation of resistance.The component voltage that on resistance R 4, obtains, become direct voltage through after the filtering of capacitor C 6, this voltage enters into the voltage controlled oscillator of being made up of Z2, R6, D8, R7, Z3, R8, C9 and IC, produces the frequency corresponding to light modulation control frequency voltage, thereby reaches the purpose of frequency modulation.Clearly control frequency magnitude of voltage is proportional with B point effective voltage value, control just magnitude of voltage frequently becomes reverse proportionate relationship with the phase modulation phase angle, and promptly phase angle is big more, and magnitude of voltage is more little frequently in control, the operating frequency of IC is then high more, thereby realizes the frequency conversion light modulation to fluorescent lamp.
Now adopt the electric ballast of the circuit of the present invention of Fig. 3, and be equipped with a 15W fluorescent lamp, and the frequency modulation characteristic of this lamp measured, see shown in Figure 4, the relation curve of the light modulation phase angle when making nonlinear resistance and light modulation control frequency voltage (indicating 1 among the figure) and high direct voltage (indicating 2 among the figure) in the dim signal treatment circuit, using triode.In order to be clear that the Q3 triode in the dim signal treatment circuit 4 becomes the effect of a nonlinear change resistance in circuit, the equivalent general linear resistance of (the phase modulation angle is 23 °) was tested when we changed the Q triode into a beginning, drew result shown in Figure 5.As seen from Figure 4, be 130 ° during near the extinguishing of lamp, control at this moment voltage (M point among Fig. 3) frequently is 0.2 volt, and the high direct voltage of lamp is still up to 190 volts.But obtain among the light modulation phase angle during from the common linear resistance of application the dim signal treatment circuit and relation curve Fig. 5 of light modulation control frequency voltage and high direct voltage, during near the extinguishing of lamp is 120 °, and scintillation appears, at this moment light modulation control is voltage 0.9 volt of high pressure still then frequently, and high direct voltage then is reduced to 110 volts.Just since this time high direct voltage descend too lowly, make and can't keep the burning-point of lamp and flicker occurs.In addition since the light modulation control frequently voltage is still higher, make operating frequency still lower, what this also was unfavorable for discharging keeps, thereby has promoted the flicker of lamp.From last analysis can draw adopt the Q3 triode circuit as nonlinear resistance, be effective to the anti-flicker action of lamp.In order to obtain more suitably light modulation control voltage curve frequently, must adjust the R2 among Fig. 3, R1, R4.
Second special circuit is high direct voltage stabilizing circuit 5, this circuit is made up of C19, D6 and D7, the high frequency feedback energy is drawn from an end (see figure 3) of capacitor C 14, after the rectification by D6, energy supplement is in electrochemical capacitor C4, suitably adjust energy back amount (promptly adjusting the capacitance of C19) and can make the dc partial voltage on the electrochemical capacitor can not play certain stabilization to high direct voltage, thereby reduced the scintillation of fluorescent lamp owing to light modulation descends too soon.
The 3rd special circuit is control negative-feedback circuit 6.Because light modulation is too fast, that is the too fast and fluorescent lamp that the causes flicker of frequency change can be used feedback method and solved, in this circuit, the sampling of feedback signal is to obtain from the rapid variation of the lamp tube current of flowing through, and this electric current changed the variation that transfers voltage to, and be sent among the IC feedback that makes frequency change obtain bearing.Lamp current is flow through D11, C17, R17 and Z5 as can be seen from FIG., forms the dc voltage value corresponding to current value on R17.R15, R16, R17 and C17, C18 form one and adapt to the required threshold voltage of IC, and the stack of two voltages is delivered among the IC, realize control degenerative effect frequently.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make various corresponding changes and conversion according to the present invention, but these corresponding changes and conversion all should belong to the protection range of claim of the present invention.
Claims (9)
1, a kind of electronic ballast for fluoresent lamp of using silicon controlled dimmer for light control is characterized in that, comprising:
One filtering and rectification circuit are connected with city's AC power;
One FREQUENCY CONTROL and switching circuit, described circuit include a controllable frequency and produce the integrated circuit block IC of switch triggering signal, two switching transistor Q1, Q2 and corresponding resistance, capacity cell;
One output circuit comprises inductance, electric capacity, and its input is connected with the output of described FREQUENCY CONTROL and switching circuit;
One dim signal treatment circuit, described circuit is connected on the input of the output of described filtering and rectification circuit and described FREQUENCY CONTROL and switching circuit, this dim signal treatment circuit comprises a voltage divider and a voltage controlled oscillator, described voltage divider is made up of the resistance R 1 that is cascaded, triode Q3 and resistance R 4, described voltage controlled oscillator is by voltage-stabiliser tube Z2, Z3, diode D8, resistance R 6, R7, R8, capacitor C 9 is formed with the end that connects that is connected integrated circuit block IC;
One direct current high-voltage stabilizing circuit, the input of described circuit connects the output of described filtering and rectification circuit, and output is connected with another input of described FREQUENCY CONTROL and switching circuit, and feedback end is connected with described output circuit.
2, the electronic ballast for fluoresent lamp of using silicon controlled dimmer for light control as claimed in claim 1 is characterized in that, also comprises:
Control is negative-feedback circuit frequently, and the output of described circuit is connected on the integrated circuit block IC of described FREQUENCY CONTROL and switching circuit, and input connects described output circuit.
3, the electronic ballast for fluoresent lamp of using silicon controlled dimmer for light control as claimed in claim 1 is characterized in that: described triode Q3 is a field effect transistor.
4, the electronic ballast for fluoresent lamp of using silicon controlled dimmer for light control as claimed in claim 1 or 2, it is characterized in that: described high direct voltage stabilizing circuit by diode in series D6, D7 and wherein the capacitor C 19 that is connected in the middle of described diode D6, the D7 of an end form, the other end is connected with described output circuit.
5, the electronic ballast for fluoresent lamp of using silicon controlled dimmer for light control as claimed in claim 2, it is characterized in that: described control negative-feedback circuit frequently mainly is made up of RC parallel circuits, R15, diode D11 and the transistor Z5 of two series connection, the RC parallel circuits of described two series connection is R16, C18 and R17, C17, and described diode D11, transistor Z5, resistance R 17, capacitor C 17 are formed the lamp current negative-feedback circuit.
6, the electronic ballast for fluoresent lamp of using silicon controlled dimmer for light control as claimed in claim 1 is characterized in that: described integrated circuit block IC is L6574.
7, the electronic ballast for fluoresent lamp of using silicon controlled dimmer for light control as claimed in claim 1 is characterized in that: described integrated circuit block IC is UBA2014.
8, the electronic ballast for fluoresent lamp of using silicon controlled dimmer for light control as claimed in claim 1, it is characterized in that: described filtering and rectification circuit comprise filter element, pi filter and bridge rectifier, and its input is connected with city's AC power by dimmer.
9, the electronic ballast for fluoresent lamp of using silicon controlled dimmer for light control as claimed in claim 8, it is characterized in that: described filtering and rectification circuit also comprise the resistance R 18 that is directly parallel in input, and with capacitances in series after be connected in parallel on resistance R 19 on the input again.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101008986A CN100566500C (en) | 2004-02-17 | 2004-12-13 | A kind of electronic ballast for fluoresent lamp of using silicon controlled dimmer for light control |
| JP2005036903A JP2005235761A (en) | 2004-02-17 | 2005-02-14 | Electronic ballast for fluorescent lamp using silicon-controlled phase modulator for adjusting luminance |
| EP05101127A EP1565042A3 (en) | 2004-02-17 | 2005-02-15 | Electronic ballast for fluorescent lamp using silicon-controlled phase-luminosity modulator for adjusting luminosity |
| KR1020050013024A KR20060066574A (en) | 2004-02-17 | 2005-02-17 | Electronic ballast for fluorescent lamp using silicon-controlled light modulator for adjusting luminosity |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200420003182.X | 2004-02-17 | ||
| CN200420003182 | 2004-02-17 | ||
| CNB2004101008986A CN100566500C (en) | 2004-02-17 | 2004-12-13 | A kind of electronic ballast for fluoresent lamp of using silicon controlled dimmer for light control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1722929A CN1722929A (en) | 2006-01-18 |
| CN100566500C true CN100566500C (en) | 2009-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004101008986A Expired - Fee Related CN100566500C (en) | 2004-02-17 | 2004-12-13 | A kind of electronic ballast for fluoresent lamp of using silicon controlled dimmer for light control |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1565042A3 (en) |
| JP (1) | JP2005235761A (en) |
| KR (1) | KR20060066574A (en) |
| CN (1) | CN100566500C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102598873A (en) * | 2009-09-18 | 2012-07-18 | 皇家飞利浦电子股份有限公司 | Electronic ballast with dimming circuit |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1694597B (en) * | 2005-05-20 | 2010-05-26 | 马士科技有限公司 | Step light regulated fluorescent lamp ballast |
| CN101257765A (en) * | 2007-03-02 | 2008-09-03 | 马士科技有限公司 | Stepless light modulation florescent lamp and ballast thereof |
| CN101547547A (en) | 2008-03-28 | 2009-09-30 | 马士科技有限公司 | Dimmable fluorescent lamp ballast |
| CN102014540B (en) | 2010-03-04 | 2011-12-28 | 凹凸电子（武汉）有限公司 | Drive circuit and controller for controlling electric power of light source |
| US9232591B2 (en) | 2008-12-12 | 2016-01-05 | O2Micro Inc. | Circuits and methods for driving light sources |
| US9253843B2 (en) | 2008-12-12 | 2016-02-02 | 02Micro Inc | Driving circuit with dimming controller for driving light sources |
| US8508150B2 (en) | 2008-12-12 | 2013-08-13 | O2Micro, Inc. | Controllers, systems and methods for controlling dimming of light sources |
| US8339067B2 (en) | 2008-12-12 | 2012-12-25 | O2Micro, Inc. | Circuits and methods for driving light sources |
| US8330388B2 (en) | 2008-12-12 | 2012-12-11 | O2Micro, Inc. | Circuits and methods for driving light sources |
| US8044608B2 (en) | 2008-12-12 | 2011-10-25 | O2Micro, Inc | Driving circuit with dimming controller for driving light sources |
| US9030122B2 (en) | 2008-12-12 | 2015-05-12 | O2Micro, Inc. | Circuits and methods for driving LED light sources |
| US9386653B2 (en) | 2008-12-12 | 2016-07-05 | O2Micro Inc | Circuits and methods for driving light sources |
| US8076867B2 (en) | 2008-12-12 | 2011-12-13 | O2Micro, Inc. | Driving circuit with continuous dimming function for driving light sources |
| US8378588B2 (en) | 2008-12-12 | 2013-02-19 | O2Micro Inc | Circuits and methods for driving light sources |
| CN103391006A (en) | 2012-05-11 | 2013-11-13 | 凹凸电子（武汉）有限公司 | Light source driving circuit and controller and method for controlling power converter |
| US8698419B2 (en) | 2010-03-04 | 2014-04-15 | O2Micro, Inc. | Circuits and methods for driving light sources |
| US8111017B2 (en) | 2010-07-12 | 2012-02-07 | O2Micro, Inc | Circuits and methods for controlling dimming of a light source |
| CN102355787B (en) * | 2011-08-08 | 2013-09-25 | 杭州电子科技大学 | Method and circuit for variable frequency dimming based on UBA2211 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5382881A (en) * | 1992-12-28 | 1995-01-17 | North American Philips Corporation | Ballast stabilization circuitry for eliminating moding or oscillation of the current envelope in gas discharge lamps and method of operating |
| US5872429A (en) * | 1995-03-31 | 1999-02-16 | Philips Electronics North America Corporation | Coded communication system and method for controlling an electric lamp |
| US6020689A (en) * | 1997-04-10 | 2000-02-01 | Philips Electronics North America Corporation | Anti-flicker scheme for a fluorescent lamp ballast driver |
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2004
- 2004-12-13 CN CNB2004101008986A patent/CN100566500C/en not_active Expired - Fee Related
-
2005
- 2005-02-14 JP JP2005036903A patent/JP2005235761A/en not_active Withdrawn
- 2005-02-15 EP EP05101127A patent/EP1565042A3/en not_active Withdrawn
- 2005-02-17 KR KR1020050013024A patent/KR20060066574A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102598873A (en) * | 2009-09-18 | 2012-07-18 | 皇家飞利浦电子股份有限公司 | Electronic ballast with dimming circuit |
| CN102598873B (en) * | 2009-09-18 | 2015-11-25 | 皇家飞利浦电子股份有限公司 | With the electric ballast of light adjusting circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1565042A2 (en) | 2005-08-17 |
| JP2005235761A (en) | 2005-09-02 |
| EP1565042A3 (en) | 2006-01-25 |
| CN1722929A (en) | 2006-01-18 |
| KR20060066574A (en) | 2006-06-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Lisheng Electrooptical Source (Xiamen) Co., Ltd. Assignor: Mass Technology (H.K.) Ltd. Contract fulfillment period: 2008.9.6 to 2014.9.6 contract change Contract record no.: 2008990001440 Denomination of invention: An electronic ballast for fluorescence lamp using silicon controlled dimmer for light control License type: Exclusive license Record date: 20081212 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.9.6 TO 2014.9.6; CHANGE OF CONTRACT Name of requester: LISHENG ELECTRIC LIGHT SOURCE ( XIAMEN ) CO., LTD. Effective date: 20081212 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091202 Termination date: 20121213 |