CN201042100Y - Light-adjusting control signal transmission circuit for electronic light-adjusting rectifier - Google Patents
Light-adjusting control signal transmission circuit for electronic light-adjusting rectifier Download PDFInfo
- Publication number
- CN201042100Y CN201042100Y CNU2007200222182U CN200720022218U CN201042100Y CN 201042100 Y CN201042100 Y CN 201042100Y CN U2007200222182 U CNU2007200222182 U CN U2007200222182U CN 200720022218 U CN200720022218 U CN 200720022218U CN 201042100 Y CN201042100 Y CN 201042100Y
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- signal transmission
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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
- H05B41/40—Controlling the intensity of light discontinuously
- H05B41/42—Controlling the intensity of light discontinuously in two steps only
-
- 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
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- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Abstract
The utility model discloses a light adjusting control signal transmission circuit of an electronic aiming ballast, which comprises a light adjusting switching circuit, a positive half-cycle detecting bleeder circuit, a negative half-cycle detecting bleeder circuit and a digital potentiometer; wherein, an AC power supply source passes through the light adjusting switching circuit, on the one hand, the AC power supply source is connected with one circuit control input end of the digital potentiometer through the positive half-cycle detecting bleeder circuit, on the other hand, the AC power supply source is connected with the other circuit control input end of the digital potentiometer through the negative half-cycle detecting bleeder circuit, through changing the trigger state of an adjusting switch in the light adjusting switching circuit, the works of the positive half-cycle detecting bleeder circuit and the positive half-cycle detecting bleeder circuit can be selected, in order to change the electric level and electric potential values which are inputted to the two circuit control input ends of the digital potentiometer. The digital potentiometer decides the pressure value outputted to the light adjusting control end of a light adjusting ballast circuit of the digital potentiometer according to the electric potential state of the two circuit control input ends, and then, the output power can be changed, thereby realizing the adjusting for the brightness of a fluorescent lamp.
Description
Technical field
The utility model belongs to fluorescence lamp electronic dimming ballast technical field, specifically, relates to a kind of improvement to the dimming control signal transmission circuit in the electronic dimming ballast.
Background technology
For present fluorescent lamp, be used to realize that the dimming control signal transmission manner generally has two kinds in its electronic dimming ballast: a kind of user of being is external two control signal wires and a potentiometer (or a signal source) when installing and using, resistance by regulator potentiometer, and then change is input to the voltage of the brightness adjustment control end of electronic dimming ballast, with effective adjusting of realization electronic dimming ballast power output, thus the luminosity of change fluorescent tube; Though another kind of mode user installation does not need external two control signal wires when using, need devices such as configuration infrared ray, wireless transmission receiving equipment or controllable silicon to assist and realize.If adopt the infrared radio emitting and receiving equipment to realize the adjusting of brightness of fluorescent lamp, its circuit structure complexity, cost height, volume are big; Adopt SCR control then not only complex structure, cost height, and electric network pollution is serious, can cause interference to other electronic equipment, and production debug process complexity, job insecurity, is unfavorable for the further energy savings of fluorescent lamp.
Since above drawbacks limit applying of fluorescence lamp electronic dimming ballast.
The utility model content
The purpose of this utility model is to provide a kind of simple in structure, stable and reliable operation dimming control signal transmission circuit, when user installation is used, need not external control signal wire and potentiometer (or a signal source) or dispose control devices such as special infrared ray, wireless transmission receiving equipment, controllable silicon, can realize the dimming function of electronic dimming ballast, volume is little, cost is low, can not pollute electrical network and other electronic equipment.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of dimming control signal transmission circuit of electronic dimming ballast comprises that dimmer switch circuit, positive half cycle detect bleeder circuit, negative half period detects bleeder circuit and digital regulation resistance; Wherein, communication power supply detects wherein one tunnel control input end that bleeder circuit connects described digital regulation resistance through positive half cycle on the one hand by described dimmer switch circuit; Detect other one tunnel control input end that bleeder circuit connects described digital regulation resistance through negative half period on the other hand; By changing the triggering state of by-pass cock in the dimmer switch circuit, and then select described positive half cycle to detect bleeder circuit or negative half period detects bleeder circuit work, be input to the high-low level current potential of the two-way control input end of described digital regulation resistance with change; The output of described digital regulation resistance connects the brightness adjustment control end of light modulation ballasting circuit, determines its size to the brightness adjustment control end output voltage of light modulation ballasting circuit according to the potential state of its two-way control input end.
Further, include two parallel switching branches that connect in described dimmer switch circuit, every switching branches is in series by a hand switch and a diode, and the diode in two switching branches oppositely connects each other.
Preferably, described hand switch is the normally-closed contact of push-button switch or sensitive switch.
Further again, an end of described dimmer switch circuit connects the communication power supply live wire, and the other end connects positive half cycle and detects bleeder circuit; Detect at described positive half cycle and to include two diodes and a potential-divider network in the bleeder circuit, wherein, the anode of first diode connects described dimmer switch circuit, negative electrode connects the anode of second diode by described potential-divider network, and the negative electrode of described second diode connects the zero line of communication power supply; The middle dividing potential drop node of described potential-divider network connects wherein one tunnel control input end of described digital regulation resistance.
Detect at described negative half period and to include two diodes and a potential-divider network in the bleeder circuit, wherein, the anode of the 3rd diode connects the communication power supply zero line, negative electrode connects the anode of the 4th diode by described potential-divider network, and the negative electrode of described the 4th diode connects the communication power supply live wire by described dimmer switch circuit; The middle dividing potential drop node of described potential-divider network connects other one tunnel control input end of described digital regulation resistance.
Wherein, described potential-divider network is formed by connecting by two divider resistances, or is formed by connecting by a divider resistance and a voltage stabilizing didoe.
The level that can accurately respond to its control input end in order to ensure described digital regulation resistance changes, and is connected with filter capacitor respectively on the two-way control input end of described digital regulation resistance.
Further again, described second, the 4 two diode formed full-wave bridge rectifier circuit together with two other diode, and alternating current is converted into behind the direct current to described digital regulation resistance and light modulation ballasting circuit provides dc supply; Wherein, the anode of described second, the 4 two diode connects dc power cathode, and the negative electrode of described two other diode connects dc power anode.
Further, in described ac power supply circuit, be in series with a total power switch, to realize that fluorescent tube is opened the switch control of going out.
The output of described light modulation ballasting circuit connects fluorescent tube, and the voltage swing of receiving according to its brightness adjustment control termination changes its power output, to regulate fluorescent tube brightness.
Compared with prior art, advantage of the present utility model and good effect are: dimming control signal transmission circuit of the present utility model is simple in structure, working stability is reliable, power line by the adjusting brightness of fluorescent lamp ballast directly transmits control signal, realize the dimming function of dimming ballast, not only need not external control signal wire and potentiometer (or external signal source), and avoided infrared radio sending and receiving apparatus and silicon controlled to use, effectively stopped pollution to electrical network and other electronic equipment, it is little to have volume, cost is low, the practical significant advantage that waits, can quicken the application of penetration of electron dimming ballast, realize the good result of energy savings.
Description of drawings
Fig. 1 is the theory diagram of the electronic dimming ballast that proposes of the utility model;
Fig. 2 is the circuit theory diagrams of a kind of embodiment of the dimming control signal transmission circuit that proposes of the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
The electronic dimming ballast that the utility model proposed sends dim signal by the dimmer switch circuit, to realize effective adjusting to fluorescent tube brightness, its operation principle is: when not carrying out light modulation, by the dimmer switch circuit output sine ac power supply identical, for the light modulation ballasting circuit provides working power with the electric main waveform; When the needs light modulation, positive half cycle or negative half period by dimmer switch circuit output AC power source, the light modulation ballasting circuit is temporarily by positive half cycle or negative half period powered operation, be operated in the half-wave state in the time that the light modulation ballasting circuit is only extremely lacked when light modulation is set, the positive-negative half-cycle of AC power is detected by detecting circuit and control figure potentiometer output analog voltage signal, and then control light modulation ballasting circuit changes its power output, so that the brightness of fluorescent tube changes, reach the purpose of adjusting brightness of fluorescent lamp.
The theory diagram of electronic dimming ballast of the present utility model comprises that referring to shown in Figure 1 dimmer switch circuit, positive half cycle detect bleeder circuit, negative half period detects bleeder circuit, digital regulation resistance U1, dimming ballast U2 and fluorescent tube.Wherein, communication power supply AC detects wherein one tunnel control input end that bleeder circuit connects described digital regulation resistance U1 through positive half cycle on the one hand by described dimmer switch circuit; Detect other one tunnel control input end that bleeder circuit connects described digital regulation resistance U1 through negative half period on the other hand; By changing the triggering state of by-pass cock in the dimmer switch circuit, and then select described positive half cycle to detect bleeder circuit or negative half period detects bleeder circuit work, be input to the high-low level current potential of the two-way control input end of described digital regulation resistance U1 with change.Described digital regulation resistance U1 determines the size of its output output aanalogvoltage according to the high low-potential state of its two-way control input end, and then connects the brightness adjustment control end of dimming ballast U2.Described dimming ballast U2 changes the power output of its output according to the potential value of its brightness adjustment control end input voltage, and then realizes the effective adjusting to the fluorescent tube luminosity.
Described communication power supply AC is an electric main, connects the rectifying and wave-filtering bleeder circuit by the dimmer switch circuit, and then provides dc supply for digital regulation resistance U1 and dimming ballast U2.
Embodiment one, referring to shown in Figure 2, provided a kind of specific embodiment of the electronic dimming ballast that the utility model proposed, wherein, the dimmer switch circuit is formed by connecting by two parallel switching branches that connect, every switching branches is in series by a hand switch K1 or K2 and diode D1 or D2, and two diode D1, D2 oppositely connect each other.Described dimmer switch circuit is connected in the current supply circuit of AC power, both can be connected in the live wire, also can be connected in the zero line, and present embodiment is for narrating for simplicity, and being connected in the interchange live wire with the dimmer switch circuit is that example is specifically described.
As Fig. 2, exchange live wire L and connect described dimmer switch circuit by total power switch K, when not needing light modulation, hand switch K1, K2 closure, the positive half cycle of sine ac power supply flows through K switch 2 and diode D2; Negative half period flows through K switch 1 and diode D1; At this moment, the dimmer switch circuit equivalent is exported the simple alternating current all-wave in the switch of a closure.When needs are heightened brightness of fluorescent lamp, press K switch 1, at this moment, K switch 1 disconnects, and K2 is in closure state, and the positive half cycle of sine ac power supply flows through K switch 2 and diode D2, and negative half period ends.When needs reduce brightness of fluorescent lamp, press K switch 2, at this moment, K switch 2 disconnects, and K1 is in closure state, and the negative half period of sine ac power supply flows through K switch 1 and diode D1, and positive half cycle ends.
Described dimmer switch circuit is exported above-mentioned three kinds of effective statuses, and simultaneously the bridge rectifier of forming via diode D3, D4, D5, D6 is converted into behind the direct current alternating current for digital regulation resistance U1 and light modulation ballasting circuit U2 dc supply is provided.Wherein, DC power supply Vcc by the voltage stabilizing circuit formed by resistance R 1, voltage stabilizing didoe D9 and capacitor C 3 Filtering Processing after the working power input 3 of connection digital regulation resistance U1, the reverse breakdown pressure drop of described voltage stabilizing didoe D9 equals described digital regulation resistance U1 working power input 3 desired potential values.Certainly, described voltage stabilizing didoe D9 also can adopt other voltage-stabilizing device or the suitably divider resistance replacement of resistance, and the utility model does not specifically limit this.
Described hand switch K1, K2 can be the normally-closed contacts of push-button switch or sensitive switch, and also or the normally closed switch device of other form, the utility model does not specifically limit this.
Detect at described positive half cycle and to include two diode D6, D7 and a potential-divider network of forming by two divider resistance R2, R5 in the bleeder circuit.Wherein, the anode of the first diode D7 connects described dimmer switch circuit, and negative electrode connects wherein one tunnel control input end 2 of described digital regulation resistance U1 on the one hand by divider resistance R2; The anode that connects the second diode D6 on the other hand by divider resistance R5, and pass through the zero line N that the described second diode D6 connects communication power supply.
In like manner, detect at described negative half period and also include two diode D5, D8 and a potential-divider network of forming by two divider resistance R3, R4 in the bleeder circuit.Wherein, the anode of the 3rd diode D8 connects the zero line N of communication power supply, and negative electrode connects other one tunnel control input end 1 of described digital regulation resistance U1 on the one hand by divider resistance R3; The anode that connects the 4th diode D5 on the other hand by divider resistance R4, the negative electrode of described the 4th diode D5 connect the live wire L of communication power supply by described dimmer switch circuit.
Wherein, for the purpose of simplifying circuit structure, described second diode D6 and the 4th diode D5 are used for bridge rectifier, and its anode connects dc power cathode G, and then are connected with the earth terminal of light modulation ballasting circuit U2 with digital regulation resistance U1; The negative electrode of diode D3, D4 connects dc power anode Vcc, for the operate as normal of digital regulation resistance U1 and light modulation ballasting circuit U2 provides dc supply.
The input response time of considering described digital regulation resistance U1 control input end 1,2 generally is greater than 40 milliseconds, the level that can accurately respond to its control input end 1,2 in order to ensure digital regulation resistance U1 changes, between the two-way control input end 1,2 of described digital regulation resistance U1 and dc power cathode G, be connected with a filter capacitor C1, C2 respectively, with the shaping that realization aligns, negative half period detects the bleeder circuit output voltage waveforms, guarantee that digital regulation resistance U1 accurately responds user's light modulation instruction.
Three kinds of effective status signals of described dimmer switch circuit output are detected by diode D7, D8, become the DCL level after resistance R 2, R3, R4, R5 dividing potential drop and capacitor C 1, C2 filtering, the output valve of control figure potentiometer U1.Closed total power switch K starts fluorescent lamp.When not needing light modulation, hand switch K1, K2 are in closure state, the positive half cycle of the sine ac power supply of electric main output constitutes the loop by K switch, K2, diode D2, D7, resistance R 2, R5 and diode D6 and power supply, the A point detects one by the DCL high level after resistance R 2, R5 dividing potential drop and capacitor C 2 Filtering Processing, and promptly the control input end 2 of digital regulation resistance U1 is changed to high level; The negative half period of the sine ac power supply of electric main output constitutes the loop by diode D8, resistance R 3, R4, diode D5, D1 and K switch 1, K and power supply, detect one on the B point by the DCL high level after resistance R 3, R4 dividing potential drop and capacitor C 1 Filtering Processing, promptly the control input end 1 of digital regulation resistance U1 is changed to high level.At this moment, digital regulation resistance U1 remains unchanged by the analog voltage Vout of its output 5 outputs, and brightness of fluorescent lamp remains unchanged.
When needs rising brightness of fluorescent lamp, press hand switch K1, promptly K switch 1 disconnects, and the negative half period of sine ac power supply ends, and positive half cycle passes through.At this moment, the A point is a high level, and the B point is a low level, and promptly the control input end 2 of digital regulation resistance U1 is changed to high level, and control input end 1 is changed to low level, the raise analog voltage Vout of its output of digital regulation resistance U1, and brightness of fluorescent lamp raises.
When needs reduce brightness of fluorescent lamp, press hand switch K2, promptly K switch 2 disconnects, and the positive half cycle of sine ac power supply ends, and negative half period passes through.At this moment, the A point is a low level, and the B point is a high level, and promptly the control input end 2 of digital regulation resistance U1 is changed to low level, and control input end 1 is changed to high level, and digital regulation resistance U1 reduces the analog voltage Vout of its output, and brightness of fluorescent lamp reduces.
When light modulation, press corresponding hand switch K1 or K2, digital regulation resistance U1 is according to the high-low level state that its control input end 1,2 receives, and reduces gradually or the analog voltage Vout of its output 5 outputs that raise, and the brightness of fluorescent lamp is changed thereupon.When fluorescent lamp reaches the brightness that needs, stop to press hand switch K1 or K2, the output voltage V out of digital regulation resistance U1 stops to change, and then the control fluorescent lamp remains operating in the brightness of requirement.
Among Fig. 2, described divider resistance R4, R5 also can replace with voltage-stabiliser tube or other components and parts with dividing potential drop effect, and the utility model is not limited thereto.
It is the integrated chip realization of X9511 that digital regulation resistance U1 of the present utility model can adopt model, the analog voltage signal amplitude Vout of its output 5 pin output is controlled by the potential state of its control input end 1,2 pin, its output 5 connects the brightness adjustment control end of light modulation ballasting circuit U2, the aanalogvoltage size that light modulation ballasting circuit U2 receives according to its brightness adjustment control termination changes its power output, and then realizes the effective adjusting to the fluorescent tube luminosity.Described digital regulation resistance X9511 has memory function, and the brightness when turning on light is exactly the brightness when turning off the light, and its 7 pin is for enabling pin, and low level is effective, so connect dc power cathode G.Certainly, digital regulation resistance U1 of the present utility model also can adopt the digital regulation resistance of other model to realize that the utility model is not limited thereto.
The dimmer switch circuit structure that the dimming control signal transmission circuit that the utility model proposed is disclosed in embodiment one, also can adopt other switching circuit form, as long as can satisfy when needs light modulation not, control positive half cycle simultaneously and detect bleeder circuit and negative half period and detect bleeder circuit and work on power; When the needs light modulation, only control positive half cycle and detect bleeder circuit and negative half period and detect wherein electricity work on the way in the bleeder circuit, can satisfy the brightness adjustment control requirement that the utility model proposes.Because this part content, those of ordinary skills association easily goes out many kinds of ways of realization, and therefore, the utility model does not specifically describe at this.
The utility model has been realized effective adjusting to brightness of fluorescent lamp by adopting above-mentioned simple circuit configuration, with dimming control signal transmission circuit and light modulation ballasting circuit package design together, can form electronic dimming ballast with dimming function, be used with fluorescent tube, need not external control signal wire or wireless transmitting and receiving device and can realize effective adjusting brightness of fluorescent lamp, convenient and practical.
Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection range of the present utility model.
Claims (10)
1. the dimming control signal transmission circuit of an electronic dimming ballast is characterized in that: comprise that dimmer switch circuit, positive half cycle detect bleeder circuit, negative half period detects bleeder circuit and digital regulation resistance; Communication power supply detects wherein one tunnel control input end that bleeder circuit connects described digital regulation resistance through positive half cycle on the one hand by described dimmer switch circuit; Detect other one tunnel control input end that bleeder circuit connects described digital regulation resistance through negative half period on the other hand; By changing the triggering state of by-pass cock in the dimmer switch circuit, and then select described positive half cycle to detect bleeder circuit or negative half period detects bleeder circuit work, be input to the high-low level current potential of the two-way control input end of described digital regulation resistance with change; The output of described digital regulation resistance connects the brightness adjustment control end of light modulation ballasting circuit, determines the size of its output output voltage according to the potential state of its two-way control input end.
2. the dimming control signal transmission circuit of electronic dimming ballast according to claim 1, it is characterized in that: in described dimmer switch circuit, include two parallel switching branches that connect, every switching branches is in series by a hand switch and a diode, and the diode in two switching branches oppositely connects each other.
3. the dimming control signal transmission circuit of electronic dimming ballast according to claim 2, it is characterized in that: described hand switch is the normally-closed contact of push-button switch or sensitive switch.
4. the dimming control signal transmission circuit of electronic dimming ballast according to claim 2 is characterized in that: an end of described dimmer switch circuit connects the communication power supply live wire, and the other end connects positive half cycle and detects bleeder circuit; Detect at described positive half cycle and to include two diodes and a potential-divider network in the bleeder circuit, wherein, the anode of first diode connects described dimmer switch circuit, negative electrode connects the anode of second diode by described potential-divider network, and the negative electrode of described second diode connects the zero line of communication power supply; The middle dividing potential drop node of described potential-divider network connects wherein one tunnel control input end of described digital regulation resistance.
5. the dimming control signal transmission circuit of electronic dimming ballast according to claim 2, it is characterized in that: detect at described negative half period and include two diodes and a potential-divider network in the bleeder circuit, wherein, the anode of the 3rd diode connects the communication power supply zero line, negative electrode connects the anode of the 4th diode by described potential-divider network, and the negative electrode of described the 4th diode connects the communication power supply live wire by described dimmer switch circuit; The middle dividing potential drop node of described potential-divider network connects other one tunnel control input end of described digital regulation resistance.
6. according to the dimming control signal transmission circuit of claim 4 or 5 described electronic dimming ballasts, it is characterized in that: described potential-divider network is formed by connecting by two divider resistances, or is formed by connecting by a divider resistance and a voltage stabilizing didoe.
7. according to the dimming control signal transmission circuit of claim 4 or 5 described electronic dimming ballasts, it is characterized in that: on the two-way control input end of described digital regulation resistance, be connected with filter capacitor respectively.
8. according to the dimming control signal transmission circuit of claim 4 or 5 described electronic dimming ballasts, it is characterized in that: described second, the 4 two diode formed full-wave bridge rectifier circuit together with two other diode, and alternating current is converted into behind the direct current to described digital regulation resistance and light modulation ballasting circuit provides dc supply; Wherein, the anode of described second, the 4 two diode connects dc power cathode, and the negative electrode of described two other diode connects dc power anode.
9. the dimming control signal transmission circuit of electronic dimming ballast according to claim 2 is characterized in that: be in series with a total power switch in described ac power supply circuit.
10. the dimming control signal transmission circuit of electronic dimming ballast according to claim 1, it is characterized in that: the output of described light modulation ballasting circuit connects fluorescent tube, the voltage swing of receiving according to its brightness adjustment control termination changes its power output, to regulate fluorescent tube brightness.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200222182U CN201042100Y (en) | 2007-05-14 | 2007-05-14 | Light-adjusting control signal transmission circuit for electronic light-adjusting rectifier |
| PCT/CN2008/000927 WO2008138223A1 (en) | 2007-05-14 | 2008-05-12 | A dimming control signal transmission circuit of the electronic dimming ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200222182U CN201042100Y (en) | 2007-05-14 | 2007-05-14 | Light-adjusting control signal transmission circuit for electronic light-adjusting rectifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201042100Y true CN201042100Y (en) | 2008-03-26 |
Family
ID=39253814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200222182U Expired - Fee Related CN201042100Y (en) | 2007-05-14 | 2007-05-14 | Light-adjusting control signal transmission circuit for electronic light-adjusting rectifier |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN201042100Y (en) |
| WO (1) | WO2008138223A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008138223A1 (en) * | 2007-05-14 | 2008-11-20 | Bo Zhang | A dimming control signal transmission circuit of the electronic dimming ballast |
| WO2010043108A1 (en) * | 2008-10-14 | 2010-04-22 | Yu Fang | Pulse width modulation controlled digital analog dimmer |
| CN113966056A (en) * | 2020-04-30 | 2022-01-21 | 深圳市撰文科技有限公司 | Dimming control circuit, device and dimmer |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142668A (en) * | 2011-03-21 | 2011-08-03 | 湖北网安科技有限公司 | Overcurrent rapid-disconnection protection circuit based on digital control potentiometer technology |
| CN113169674A (en) * | 2018-12-28 | 2021-07-23 | 深圳市柔宇科技股份有限公司 | Drive control circuit of light modulation glass and light modulation glass |
| CN114025447A (en) * | 2021-10-27 | 2022-02-08 | 朱彩良 | Corridor LED lamp control circuit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29609335U1 (en) * | 1996-05-24 | 1996-08-22 | Trilux-Lenze Gmbh + Co Kg, 59759 Arnsberg | Fluorescent ballast |
| US6603274B2 (en) * | 2001-04-02 | 2003-08-05 | International Rectifier Corporation | Dimming ballast for compact fluorescent lamps |
| US6534931B1 (en) * | 2001-09-28 | 2003-03-18 | Osram Sylvania Inc. | Dimming control system for electronic ballasts |
| CN100473251C (en) * | 2002-01-30 | 2009-03-25 | 香港城市大学 | Device and method for light-modulating control of fluorescent lamp |
| US6727662B2 (en) * | 2002-09-28 | 2004-04-27 | Osram Sylvania, Inc. | Dimming control system for electronic ballasts |
| CN201042100Y (en) * | 2007-05-14 | 2008-03-26 | 张波 | Light-adjusting control signal transmission circuit for electronic light-adjusting rectifier |
-
2007
- 2007-05-14 CN CNU2007200222182U patent/CN201042100Y/en not_active Expired - Fee Related
-
2008
- 2008-05-12 WO PCT/CN2008/000927 patent/WO2008138223A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008138223A1 (en) * | 2007-05-14 | 2008-11-20 | Bo Zhang | A dimming control signal transmission circuit of the electronic dimming ballast |
| WO2010043108A1 (en) * | 2008-10-14 | 2010-04-22 | Yu Fang | Pulse width modulation controlled digital analog dimmer |
| CN113966056A (en) * | 2020-04-30 | 2022-01-21 | 深圳市撰文科技有限公司 | Dimming control circuit, device and dimmer |
| CN113966056B (en) * | 2020-04-30 | 2024-05-28 | 深圳市德力时代科技有限公司 | Dimming control circuit, device and dimmer |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008138223A1 (en) | 2008-11-20 |
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