CN201163829Y - Driving circuit of LED lighting lamp - Google Patents
Driving circuit of LED lighting lamp Download PDFInfo
- Publication number
- CN201163829Y CN201163829Y CNU200820018320XU CN200820018320U CN201163829Y CN 201163829 Y CN201163829 Y CN 201163829Y CN U200820018320X U CNU200820018320X U CN U200820018320XU CN 200820018320 U CN200820018320 U CN 200820018320U CN 201163829 Y CN201163829 Y CN 201163829Y
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- Prior art keywords
- circuit
- illuminating lamp
- led illuminating
- drive circuit
- chopping
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Abstract
The utility model relates to a drive circuit for an LED illuminating lamp, which is a drive circuit with high efficiency and low cost. The drive circuit for the LED illuminating lamp comprises an overvoltage protective circuit and a main circuit of an anti-interference circuit, wherein, the drive circuit is divided into two circuits which are respectively a constant voltage control circuit of a chopped wave control circuit and a power supply circuit of the drive circuit through an AC/DC converting circuit, so as to provide stable current for a lamp base of the LED illuminating lamp. The drive circuit for the LED illuminating lamp has low cost and stable operation, and is safe and reliable.
Description
(1) technical field
The utility model relates to a kind of LED illuminating lamp drive circuit, is a kind of high efficiency, drive circuit cheaply.
(2) background technology
Along with expanding economy, energy-conservationly become present popular topic.On lighting, from incandescent lamp the earliest, electricity-saving lamp finally.Incandescent lamp is because its electric energy is converted into heat energy greatly, and power consumption is high, and brightness is low, progressively is eliminated at present.
Electricity-saving lamp is the principle work that utilizes gas discharge, and its art is named as self-ballasted fluorescent lamp.In general, under same wattage, electricity-saving lamp is more energy-conservation 80% than incandescent lamp, and average life span prolongs 8 times, thermal radiation only 20%.Under the situation of non-strictness, one 5 watts electricity-saving lamp illumination can be considered and equals 25 watts incandescent lamp, 7 watts electricity-saving lamp illumination approximates 40 watts, 9 watts approximate 60 watts.But electricity-saving lamp has its intrinsic defective, though its energy-saving effect is apparent in view with respect to incandescent lamp, its principle mainly is to heat to tube filament by ballast, when the 1160K temperature, filament just begins emitting electrons (because being coated with some electronics powder on filament) greatly, and the electron collision ar atmo produces non-resilient bumping, obtain energy after the ar atmo collision and clashed into mercury atom again, mercury atom transition after absorbing energy produces ionization, the ultraviolet ray of sending 253.7nm, ultraviolet ray excited light-emitting phosphor.Because the temperature of filament is about 1160K during fluorescent lamp operation, it still will be converted into heat energy to a big chunk electric energy, although and the fluorescent material energy conversion efficiency than higher, during power dissipation also be inevitable.
Occurred the LED illuminating lamp at present, be also referred to as a kind of illuminating lamp of cold light lamp, the wafer that its core is made up of P type semiconductor and N type semiconductor has a transition zone between P type semiconductor and N type semiconductor, be called PN junction.In the PN junction of some semi-conducting material, the minority carrier of injection and majority carrier compound tense can discharge the form of unnecessary energy with light, thereby electric energy directly is converted to luminous energy, invalid less energy consumption, utilization rate of electrical height.LED uses low-tension supply, and supply power voltage is between 6-24V, and is different and different according to product, so it is a safer power supply of ratio use high voltage source, is specially adapted to the public place.
Because core among the LED, diode current flow characteristic just, it has than higher requirement power supply, at present adopts DC power supply directly to power more.Certainly for increasing and range of application, the LED light fixture of alternating current also occurs much being applied at present, but needed to become the drive circuit that exchanges to direct current, and need become corresponding driving voltage.Present known LED illuminating lamp to be adopted in parallel again after a plurality of LED lamp series connection, and the working method of carrying out constant current control then also has the light emitting diode matrix that conducting direction is opposite directly to connect direct current work.Wherein the former is in parallel again after a plurality of LED lamps are connected, and the working method of carrying out constant current control is then damaged than being easier to.The light emitting diode matrix that conducting direction is opposite directly connects the working method of alternating current, and control circuit is simple, but LED has only half the time in work, and efficient is low.And be subjected to the alternating current influence, device lifetime is low.
(3) summary of the invention
The utility model is in order to overcome the defective of existing drive circuit works electric current shakiness, but a kind of overcurrent and overvoltage protection are provided, and antijamming capability is strong, the LED illuminating lamp drive circuit stably of powering.
The utility model is by the following technical solutions:
The utility model LED illuminating lamp drive circuit comprises the fuse F1 that is series at main circuit and is parallel to the overcurrent-overvoltage protecting circuit of the diac E1 formation of main circuit; be series at the magnetic stabiliser T1 of main circuit and the anti-jamming circuit of capacitor C 1 composition that is parallel to the T1 two ends, also comprise AC/DC translation circuit, control circuit of chopping, feedback circuit, drive circuit and LED illuminating lamp holder.Wherein the AC/DC translation circuit is the next circuit of described anti-jamming circuit, comprises the power supply circuits of being made of above-mentioned drive circuit bridge rectifier, filter circuit; The constant-current supply of forming above-mentioned control circuit of chopping by bridge rectifier, filter regulator circuit, filter circuit and current-limiting resistance R1; Feedback circuit is connected to U1 by collector electrode, and connects above-mentioned constant-current supply by resistance R 2, grounded emitter, and base stage is formed by the triode Q2 of resistance R 3 ground connection; The direct driving LED illuminating lamp holder of drive circuit.
Above-mentioned LED illuminating lamp drive circuit, the array of described LED illuminating lamp holder for connecting or compose in parallel by a plurality of light-emitting diodes.Be connected to electric capacity X2 between the power supply circuits of described control circuit of chopping and main circuit.
The utility model LED illuminating lamp drive circuit initiatively road adopts over-voltage over-current protection, especially adopts diac as overvoltage protection, and is relatively sensitiveer to the overvoltage reflection, the protection level height.The anti-jamming circuit of being made up of magnetic stabiliser T1 and capacitor C 1 then has reasonable anti-interference effect to surge current and pulse current.Then drift has control action to the feedback circuit of control circuit of chopping to control signal.Light-emitting diode can adopt the LED light emitting diode string of different size and varying number to compose in parallel according to different capacity and brightness requirement.Be connected to electric capacity X2 between the power supply circuits of control circuit of chopping and main circuit, be used to improve the voltage distribution of circuit, the trend of optimizing between two rectification circuits is distributed.The utility model mainly adopts transistor, the electron tube of less expensive, and cost is lower.Adopt chopper circuit to make the power supply of LED illuminating lamp lamp holder steadily.
(4) description of drawings
Fig. 1 is the utility model LED illuminating lamp drive circuit theory diagram.
Fig. 2 is the utility model LED illuminating lamp drive circuit reference diagram.
(5) embodiment
Embodiment 1:
The attached Fig. 1 and 2 of parameter; the utility model LED illuminating lamp drive circuit comprises the fuse F1 that is series at main circuit and is parallel to the overcurrent-overvoltage protecting circuit of the diac E1 formation of main circuit, is series at the magnetic stabiliser T1 of main circuit and the anti-jamming circuit of capacitor C 1 composition that is parallel to the T1 two ends.Also be provided with AC/DC translation circuit, control circuit of chopping, feedback circuit, drive circuit and LED illuminating lamp holder, wherein the AC/DC translation circuit is the next circuit of described anti-jamming circuit, by exchanging with conversion is the tributary, comprises by bridge rectifier, filter circuit forming the power supply circuits of above-mentioned drive circuit and being made of the constant-current supply two large divisions of above-mentioned control circuit of chopping bridge rectifier, filter regulator circuit, filter circuit and current-limiting resistance R1.Feedback circuit is connected to U1 by collector electrode, and connects above-mentioned constant-current supply by resistance R 2, grounded emitter, and base stage is formed by the triode Q2 of resistance R 3 ground connection; The direct driving LED illuminating lamp holder of drive circuit.Described LED illuminating lamp holder adopts a plurality of light-emitting diode series connection to form.And at the power supply circuits and the indirect electric capacity X2 of main circuit of described control circuit of chopping.Wherein U1 adopts the CWL524A chip.
Embodiment 2:
This embodiment can adopt head such as illuminating lamp to be made up of the LED light emitting diode matrix of parallel connection, if the damage of single led like this light-emitting diode can not influence whole illuminating lamp lamp holder.Other parts adopt embodiment 1 described connected mode.
Claims (3)
1. LED lighting lamp power; it is characterized in that: comprise the overcurrent-overvoltage protecting circuit that fuse F1 that is series at main circuit and the diac E1 that is parallel to main circuit constitute; be series at the magnetic stabiliser T1 of main circuit and the anti-jamming circuit of capacitor C 1 composition that is parallel to the T1 two ends; also comprise AC/DC translation circuit, control circuit of chopping, feedback circuit, drive circuit and LED illuminating lamp holder, wherein:
The AC/DC translation circuit is the next circuit of described anti-jamming circuit, comprises the power supply circuits of being made of above-mentioned drive circuit bridge rectifier, filter circuit; The constant-current supply of forming above-mentioned control circuit of chopping by bridge rectifier, filter regulator circuit, filter circuit and current-limiting resistance R1;
Feedback circuit is connected to U1 by collector electrode, and connects above-mentioned constant-current supply by resistance R 2, grounded emitter, and base stage is formed by the triode Q2 of resistance R 3 ground connection;
The direct driving LED illuminating lamp holder of drive circuit.
2. LED illuminating lamp drive circuit according to claim 1 is characterized in that: the array of described LED illuminating lamp holder for being connected or composed in parallel by a plurality of light-emitting diodes.
3. LED illuminating lamp drive circuit according to claim 1 is characterized in that: be connected to electric capacity X2 between the power supply circuits of described control circuit of chopping and main circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820018320XU CN201163829Y (en) | 2008-03-03 | 2008-03-03 | Driving circuit of LED lighting lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820018320XU CN201163829Y (en) | 2008-03-03 | 2008-03-03 | Driving circuit of LED lighting lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201163829Y true CN201163829Y (en) | 2008-12-10 |
Family
ID=40184754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820018320XU Expired - Fee Related CN201163829Y (en) | 2008-03-03 | 2008-03-03 | Driving circuit of LED lighting lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201163829Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102378433A (en) * | 2010-08-18 | 2012-03-14 | 国琏电子（上海）有限公司 | Light-emitting diode (LED) driving circuit |
| CN102498449A (en) * | 2009-06-04 | 2012-06-13 | 普英森亿有限责任公司 | Apparatus, method and system for providing AC line power to lighting devices |
| CN108903486A (en) * | 2018-07-02 | 2018-11-30 | 重庆电子工程职业学院 | A kind of visual presentation device of indoor distributed system |
-
2008
- 2008-03-03 CN CNU200820018320XU patent/CN201163829Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102498449A (en) * | 2009-06-04 | 2012-06-13 | 普英森亿有限责任公司 | Apparatus, method and system for providing AC line power to lighting devices |
| CN102498449B (en) * | 2009-06-04 | 2014-06-18 | 普英森亿有限责任公司 | Apparatus, method and system for providing AC line power to lighting devices |
| CN102378433A (en) * | 2010-08-18 | 2012-03-14 | 国琏电子（上海）有限公司 | Light-emitting diode (LED) driving circuit |
| CN102378433B (en) * | 2010-08-18 | 2014-04-16 | 国琏电子（上海）有限公司 | Light-emitting diode (LED) driving circuit |
| CN108903486A (en) * | 2018-07-02 | 2018-11-30 | 重庆电子工程职业学院 | A kind of visual presentation device of indoor distributed system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20081210 |