Wonderful LED Rope Lights Advice

) at present, variety of market of lamps and lanterns is very rich, modelling is Protean, function differ in thousands ways. Because illumination luminaries is whole bedroom illuminative,aircrew is become, accordingly, its style, material wants with illuminance character and indoor function and adornment color photograph are united, go according to this principle illumination luminaries of choose and buy. Average house has sitting room, study, living room, bedroom, kitchen, toilet, vestibular branch, because their function is different, needs illuminant is different also, because this is about,choose different lamps and lanterns according to different room function. (one) . The configuration benefit of sitting room lamps and lanterns at creating warm and sedate and easy, enthusiastic environment, make the guest has the friendly feeling of guests feel at home. The droplight that an only head or bull install in the center of can be in a room commonly regards main body as the lamp. If those who have banner calligraphy and painting is hang on sofa back wall, the wall lamp with two proper size can be installed in the both sides of calligraphy and painting, sofa edge can place a floor lamp. Device of such lamps and lanterns already sedate and easy, can choose illuminant according to different need again, or Zhu Deng is put together, full chamber is unripe brightness, or simple tube is put alone, hurried genu reminisce. The sitting room is the center of family person activity, also be the place that recieves close friends, utilization rate is higher. The colour of lamps and lanterns of the sitting room and sort can be abounded a few. Use commonly overall the kind that ties with local lighting photograph will satisfy requirement of sitting room lamplight. Overall illume can use dome light, of dome light choose the area that presses a sitting room and height to decide, if the area is only more than 10 square, and bedroom appearance is irregular, had better choose so absorb dome light, if sitting room tall big, choosing droplight is the most appropriate did not pass. The use of dome light can satisfy bedroom party and recreational requirement; Considering look TV and recreational 3 Watt Flashlights installation - provide tall lever floor lamp more appropriate, look TV and dome light is put out when reading, open offending to the eye of floor lamp both neither, make the environment appears halcyon and elegant again. Because the situation of each domestic bedrooms is different, the function of the sitting room also differs somewhat, the sitting room of partial family still may get the action of appropriative dining-room, the choice of lamps and lanterns can be decided according to his need. In the action of the exterior of lamps and lanterns and dining-room, the choice of lamps and lanterns can be decided according to his need. In the exterior of lamps and lanterns and class respect, want to consider the harmony with sitting room atmosphere, 2 it is to want do one’s best decorous, strictly avoid is costly. The sitting room is domestic appearance, the adornment style that weak likelihood does not reflect peace and tranquility of lamp act the role ofing to give you is shown slightly miserable and shabby, too luxurious psychology of the person that make possibly call in is pressed make trouble, do not put underhand method. Both neither of illume of sitting room main body can be too dark, also cannot dazzling blindfold, when sitting room person is little, can shut main body floodlight, additional open a wall lamp. Now, a few consumer look forward to pastoral, go after Gui Piao to return true artistic conception, abandon gorgeous wall lamp, and a candle is burned in the sitting room, search candle power effect. Such designs admittedly emotional appeal is quiet and tastefully laid out, but live in modern city after all, bother already give or take a lot of trouble again. Have some of wall light in the market now, installation also reachs the result of Jing Ya of a kind of guileless since the meeting later. But must notice above all, the modelling of lamps and lanterns of the choice must concise, loaded down with trivial details of avoid by all means, complex. It is illuminant next, had better choose incandescent lamp, the light is not shot directly, can let lamplight be refracted again to wall fully come out. Have kind of irregular change bracket light in the market, design is very concise. By cold rolling board wear to the lamp that make and becomes, it is 100 leaves appearance, both sides deserves to have adjustment screw. When the lamp wears jackknife to combine, lamplight from on, next parting that shoot reversely, break up downward when lamp wearing when, the light is reflexed again to the wall fully come out. Such decorating very pretty good also, chat of member of appropriate and average family or the illume when watching TV. (2) . The configuration bedroom of bedroom lamps and lanterns is the place that people rests and loosens, illicit close sex is stronger, harmony of atmosphere of respect do one’s best is acted the role of in the lamp, colour quietly elegant, radial quietly elegant, the light is downy, can choose suck dome light to make overall illume, if contented bedroom activity is arranged bed, clad the requirement that wears a cap to wait, floor lamp or wall lamp can be set to make local lighting in the head of a bed, can satisfy need of the reading before sleeping. According to the age different, the lamp of the bedroom is acted the role of also show a characteristic each, children is innocent pure childish, natural disposition is good move, can choose an external form the lamps and lanterns of gentleness of concise and lively, colour, in order to satisfy the psychological need that children grows; Adolescent is mature with each passing day, independent consciousness is intense, the choice that the lamp acts the role of should stress individual character, colour should abound change; Young disposition matures in, the work is heavy, the choice that the lamp acts the role of should consider the hobby of both sides of husband and wife, reservation is begged in warmth, in enthusiastic in beg quiet and beautiful, live at husband and wife with benefit happy and perfect; Senile life is quiet, the lamp of the bedroom is acted the role of should the exterior is concise, shining and enough, in order to show gentle and quiet artistic conception, contented old person goes after quiet psychological requirement. Pure bedroom is the place that rests as people Morpheus, should give quiet, leisurely and comfortable feeling, want to shun dazzling light and model of dazzling lamps and lanterns. An overhead suspension can be held in the place with proper room advocate the lamp, wall lamp of a the head of a bed is installed in the head of a bed. Hold the bedroom of multipurpose concurrently so, can be in a room central outfit sucks fluorescent lamp carrying type on the head, the place that needs to increase intensity of illumination in the key installs two wall lamp, the switch of these a few lamps controls the need that differs with satisfying respectively. (3) . The configuration of lamps and lanterns of dining-room, kitchen, toilet 1. Dining-room is the place of people have dinner, intensity of illumination of mensal requirement level, reason appropriate is chosen the lamps and lanterns that is down direct illuminate strongly or pull down type lamps and lanterns, make its pull down height to be in the height of square metre of 600-700 of desk upper part, the position of lamps and lanterns is in commonly of dining table upper part, to increase appetite, use a capacity to be in the incandescent lamp of 60W above. If the room has condole tip, also can use embedded lamps and lanterns. This kind of lamps and lanterns can highlight table, arrive since conspicuous, stomachic effect. Cause a shadow to prevent to be illuminated on person, lamplight should be restricted inside mensal limits. Of the person facial can pass wall lamp or illume of other complement illuminant. Dining-room also may be to cut out, the place of sew, student learning, because this needs to have electrical outlet of many power source, in order to serve as the use of desk lamp, floor lamp. The kitchen is the place that uses cook and catharsis dinner service. The area of general kitchen is lesser, majority uses the general illume on ceiling, the capacity suction between 25-40W dome light or droplight. Lamps and lanterns is given priority to with functional sex, exterior is easy, and facilitate clean cleanness. Material of lamps and lanterns should choose what oxidize not easily and rust, or it is better to choose those who have exterior covering layer. The kitchen of contemporary family contains take lampblack chance, the floodlight of 25-40W is contained commonly above, it makes the intensity of illumination of hearth upper part got very big rise. Some kitchens are cutting the work station upper part such as eat of dish, equipment to set a lot of cabinets, local lighting lantern can be held below these cabinets, in order to increase the intensity of illumination of work station. The dining-room of some residences and kitchen are common, the space is narrow, chosen lamps and lanterns should notice to be given priority to with functional sex more, exterior the simple line with the modernist school is advisable, do not choose lamps and lanterns of beyond the mark ornamental. 2. Toilet should use bright and downy lamps and lanterns, lamps and lanterns should be had moistureproof with the function that rusts not easily, illuminant should use incandescent lamp. When using bracket light, should be installation of lamps and lanterns on as perpendicular as the curtain metope, lest be on the window,report comes out shadow. Above the tub that when using dome light, should avoid how to be enveloped directly of vapour. The power of wall lamp or dome light with 40-60W advisable. The lamp of kitchen and toilet acts the role of exquisite brachylogy practical. Brief, ask amount of lamps and lanterns wants namely fewer but better, be like a kitchen, itself area is not large, but a lot of more implemental, if lamps and lanterns is overmuch, meet only more show mixed and disorderly; Bright, ask brightness is enough namely, be in especially kitchen, must design good local lighting, like rinse, make tea to boil the position with boil, affect work efficiency if the light is insufficient possibly; Practical, the choice that is requirement lamps and lanterns need not go after appearance and colour overly, should accomplish only safe, bright, be cleaned easily and maintenance went. Contemporary bedroom goes after the quality of kitchen and toilet, alleged ” 3 big this kind of requirement that large kitchen of one small ” , ” defended the view of ” to reflect people adequately greatly. Larger to the area kitchen and toilet, in adornment cannot careless human affairs, on the choice of lamps and lanterns and configuration, also can abound change, everyone should go by the structure of the house and hobby kitchen of deck, beautification and toilet. [

The apple released LCD of 24 inches of LED Cinema Display on November 27, 2008, it uses LED to regard a back as illuminant, reduced the sources of energy to use up discharge with toxin, rose to draw qualitative detail. The illume of this kind of monitor will be more even, and the apple is added on this kind of monitor first held DisplayPort interface support, at present MacBook/Pro/Air supports this monitor, at the same time it still includes 2.1 track frequency, an ISight is photographed like the head, line of collect of 3 port USB implement charge namely with notebook computer connection design. Predicting 7-10 can be bought from malic shop inside day. Origin: CNBeta

American UniPixel company announced to sign cooperative agreement with Holand MiPlaza a few days ago, development by the filmy monitor of UniPixel draft resolution ” sequential answer consumed learns shutter (Time Multiplexed Optical Shutter, TMOS) ” sample. This company plan will be made inside 2007 piece can use at demonstrated sample. TMOS is to use electrostatic make filmy (Membrane) high speed movement will be controlled with close, make perpendicular direction shoots the smooth edge surface of the flank glow of field foreword drive LED, implement the technology of complete color monitor thereby. UniPixel already had introduced the principle of this technology before this, about the research of main action the report also has been published, but the preproduction that has not rolled out OK and real work. This Holand is royal the MiPlaza that Philips Research will use the research department of company of electron of flying benefit riverside to provide technology, establishment and qualified personnel external (Microsystem Plaza) infrastructure, develop a variety of sample. The firm of liquid crystal face plate that develops workmanship will provide a hope to obtain authorization. MiPlaza is located in Huo Fen of Holand moxa favor (Eindhoven) high-tech garden area. Origin: Digital TV

Recently, far company of constant of Beijing division luck wins 1 Watt Flashlights bid successfully Beijing is conciliatory project of big screen of square of Olympic Games culture. This project is system of big screen of LED of the complete color outdoor, the requirement uses abroad to import glow chip, dot span is 20mm, screen volume is 100 smooth rice. Screen is put go up in square of culture of conciliatory Olympic Games, during basically be being used at the Olympic Games the direct seeding of each match activity and hookup are brought for local masses brand-new, fast Olympic Games information. Course of the group that review bid makes an on-the-spot investigation in the round, evaluation, decide by division luck Hengyuan comes finally bear make this item. This also is the first Olympic Games indication screen that this company wins the bid. Limited company of development of far science and technology of constant of Beijing division luck is founded 1998, it is a major pursues the design, research and development, production, high-tech company that rent and sells LED to display screen. Develop through high speed of 10 years, the LED that already made Chinese best show now shows screen creates a company. Far company of division luck constant puts in the market from the product since, thousands of client is had in Chinese churchyard, spread all over the 400 many cities in province and 33 municipalities of countrywide. In addition, the company still takes an active part in international competition and collaboration, show with exporting a freeway to Brazil the system is a mark, far company of division luck constant pushs the view to more broad international market. Origin: Umbriferous times

[dispatch of Sai Di net] DisplaySearch of market research firm says, no matter be TV of 11 inches of face plate of 82 inches of liquid crystal, OLED, or electronic paper is flexible indication screen, OLED, LED is in a poor light, flexible waiting for burgeoning technology and application with sign of feeling screen number is to drive flat to show screen face plate supplies catenary to be in 2008 and later a certain number of year the crucial factor of growth. DisplaySearch author and presiding apparitor Ross Young say, because the value is relative stable, flat showed the sales revenue of screen industry will reach 119 billion dollar 2008, grow 19% than 2007. After 2008, flat shows screen market will rise with same increase rate, and the growth of productivity needs electronic sign and electronic reader to wait for applied piece to spend growth. In addition, OLED, LED is in a poor light and flexible the progress of the technology such as indication screen will be sold from what change and the chance that increases quickly is obtained in new application. Accordingly, these crucial topics will be DisplaySearch 2008 year the main content that American flat shows to screen conference discusses. DisplaySearch is forecasted say, 2011 digital sign (26 inches of above) shipment is measured will from 2006 be less than 1 million growth to go to 3.5 million, compound year of increase rate for 31% . This market still lies at present inchoate development phase, still a lot of problems are waited for solve.

Friend of big plant of Taiwan face plate LED Landscape Lighting amounted to (2409) board of directors passes resolution, liquid crystal face plate will be established in Europe hind paragraph modular group (LCM) factory, specific place and investment amount will decide in Q3. Friend is amounted to express, be opposite for promotion the sex of the effectiveness for a given period of time that offer money of European client and reduce import tariff burden, affirmatory meeting sets LCM plant in Europe, decide in polish, Czech and Slovak 3 places are chosen to be in at present, with Czech cry highest, beforehand appraise decides at Q3. Friend amounts to a respect to point out, the LED factory grand below group division amounts to an electron to be run with independent means, the reason is besides LED back illuminant applies, including the applied range such as LED illume also is the direction that future tries hard. Long Da workshop is booked will be inside area of the friendly field that amount to L1, meeting first by LED extension piece, LED chip cut, LED is enclosed, accomplish product of LED model form again. Origin: LEDinside

Notebook computer (NB) LED Landscape Lighting is in a poor light application already showed hasten of general trends place, 2008 low NB particularly popular, factory of face plate of area of our country Taiwan beforehand appraise, volume of Taiwan annual shipment will be achieved 1, 0 ~1, 5 million, will make second half of the year main point of growth. Cost of former nevertheless stock rises, add product ASP to glide continuously, the person that also have job points out, low NB is in a poor light on the low side of product gross profit, may not can increase profit. Manufacturer of our country Taiwan points out, the LED brightness that at present low NB is in a poor light product most is used is about 1, 400~1, 500mcd, the product brightness with higher demand also only 1, 700mcd. In fact, the LED brightness of low NB and digital photograph casing asks to differ not far, reduce in demand of market of digital photograph casing, industry eagerly below the circumstance of Jew, the LED of low NB is in a poor light the product is inaccessible also guide into the product due high gross profit is led newly in the past. Because ASP of the 1st quarter glided 2008 15% , busy season of the 2nd quarter not flourishing, bring about drop again 10% the left and right sides, and be in a poor light module factory predicts ASP of the 3rd quarter will slide again 8~10% . Course of study person express, the 3 interest rate that become wool already can were tall gain profit product. relatively at low NB, the person that include the LED such as 100 million light, smooth treasure to enclose course of study also grabs mainstream dimension 14.1, 15.4 inches of products waiting for NB, its LED brightness asks to need to be in 1, 800mcd~2, between 000mcd, course of study person say frankly, can drive battalion to close truly reach accrual kinetic energy, still be the NB product of mainstream dimension, although at present shipment amount still is inferior to low NB, but industry is evaluated, permeability of LED NB market was expected to rise 2009 to 3 into. Origin: DIGITIMES

The design example of circuit of drive of high-power LED constant current although high-power LED is returned now cannot large-scale the incandescent lamp that replaces a tradition, but they indoors outside respect of illume of adornment, special type is having wider and wider application, because this masters the design technology of driver of high-power LED constant current, crucial to developing the new application of high-power LED. LED can differentiate to spend LED and common LED for high-power LED, Gao Liang according to power and glow brightness. Generally speaking, the power of high-power LED is in at least 1W above, compare at present have 1W, 3W, 5W, 8W and 10W commonly. Big already batch applies have 1W and 3W LED, and the application of 5W, 8W and 10W LED is opposite less. Lantern show of predicting high-power LED is in applied in great quantities on the Olympic Games 2008, because this electron and illume light strip are not,pay close attention to the development application of LED illume new technology. Constant current drive and the optical efficiency that improve LED are two crucial questions that LED application devises, the applied Ji Jiheng that the article introduces high-power LED above all circulates the choice guideline of drive plan, next with American country semiconductor (the product of NS) is exemple, key discussion how the efficiency that the sampling resistor of circuit of drive of constant current of clever application LED improves high-power LED, give out design of high-power LED driver and medicinal powder the note of hot design. The choice LED drive of drive chip takes of cost of LED lighting system fraction only, but the dependability that it matters to whole system performance. Current, main fixed position is in the LED drive plan of company of American country semiconductor in high-end LED illume and lamp are acted the role of wait for the market. Cent of lamp act the role ofing is indoor and outdoor two kinds, as a result of indoor LED lamp the power source environment of place application has AC/DC and DC/DC converter two kinds of means, so the choice of drive chip also wants to consider from this two respects. 500)this.style.width=500;” Border=0> pursues 1: Use feedback of DC/DC manostat FB to carry implementation from constant voltage drive (Zun Tu) to constant current drive (right graph) changeover. 1. Cent of AC/DC converter AC/DC communicates input and 12V communication input for 220V. 12V alternating current is the power source of the uses extensively haloid light in the hotel, undertake designing below the requirement that existing LED can have communication 12V in reservation. Be aimed at the design that replaces haloid tube, the main advantage of LM2734 of American country semiconductor is bulk electric current of tall, output is as high as small, dependability 1A, suit the characteristic with small diameter of mouth of haloid lamp lamp fitly. After replacing haloid tube, LED lamp is general make it 1W or 3W. LED lamp and haloid lamp photograph are older than having two advantage: (1) illuminant compares concentration, the brilliance that 1W illume place achieves is equal the brightness at ten made of baked clay haloid lamps, because this compares province report; (The life of 2) LED lamp is longer than haloid lamp. The angle of fire that the main weak point of LED lamp is lamplight is too narrow, cost is relative taller. But from long-term in light of, because the life of LED lamp is longer, still have very large cost dominant position so. 220V AC/DC converter (for example LM5021) basically locks up the desk lamp that decide dance and street lamp market. 500)this.style.width=500;” Border=0> pursues 2: In FB feedback is carried and an operation amplifier is placed between RFB in order to reduce power comsumption. 2. DC/DC converter is current, LED flashlight held the majority demand of DC/DC converter. The LED power that flashlight uses basically is 1W, power supply means includes lithium battery and nickel zinc batteries, alkaline batteries to wait. The application of 3W flashlight still is put in a few difficulty all the time, because itself of 3W LED lamp needs to come loose,heat up, medicinal powder the volume of shrinkage fitting buy is large, weakened the dominant position with LED lamp small bulk on certain level thereby. In addition, because the electric current of 3W LED lamp is as high as 700mA, the batteries after charging uses time to shorten. Nevertheless, to afore-mentioned application national semiconductor offers the program such as LM3475, LM2623A and LM3485. Miner’s lamp also is one of main application domains of LED lamp, it attributes trade of special type illume, need professional attestation standard, china takes LED seriously very much all the time in the application of miner’s lamp domain. Current, LED designs an industry to exist to understand insufficient problem to the demand of special type industry, design middling is used a few highbrow, new design plan. For example, embed LED lamp and batteries together helmet, did not consider miner’s lamp is special however all sorts of demand of use environment, this may be to cause LED to did not open the main reason of the situation all the time in the application of miner’s lamp market. To application of miner’s lamp LED, american country semiconductor offerred rich DC/DC manostat product, include LM3485, LM3478 and LM5010. Already the LED light that the user uses a 1W, lights of 6 common tall brightness LED are put again all round, form a kind to have special twinkle functional miner’s lamp. Altogether, LED lamp is having wide development perspective in lamp act the role ofing and industry of special type illume, national semiconductor offers solution of complete new-style LED drive for this. 500)this.style.width=500;” Border=0> pursues 3: Be based on the circuit of constant current drive of LM2734. The basic circuit of power supply of efficient constant voltage of circuit of constant current drive (graph 1 left) use feedback resistor RFB1 and RFB2, when load current happening changes, VFB also changes subsequently, DC/DC manostat adopts the change that feels VFB, make output voltage to maintain the n that secures in: V0=(VFB*(RFB1 RFB2))/RFB1 (1) is in graph in 1 right circuit, the FB of DC/DC manostat is end of tall block input, the voltaic IF that sheds classics LED is: IF=VFB/RFB (2) is maintain IF constant, DC/DC manostat feels VFB, adjust LED to carrying voltage next, make the electric current that sheds classics LED keeps constant. This uses DC/DC manostat namely the principle that FB feedback end realizes constant voltage to be changed to constant current. Generally speaking, DC/DC manostat has the range of a perception to the change of VFB, once LED make choice of, the size of IF of its job electric current also decided, chooses resistor should make sure VFB falls inside the limits with DC/DC concessional manostat. Be equal to 1.25V to be with VFB exemple, hypothesis IF is 15mA, 350mA and 700mA respectively, the power comsumption of sampling resistor will be less than 20mW, 400mW and 800mW respectively. To the LED of 1W, the power comsumption of sampling resistor occupies total power supply to use up respectively 2% , 40% with 80% . Accordingly, the design of sampling resistor is crucial to heightening the effect of LED, it should be chosen as far as possible little numerical value. 500)this.style.width=500;” Border=0> pursues 4: Get the design of feedback voltage directly from sampling resistor. The power comsumption that because join RFB FB is carried directly,can cause RFB is too big, be carried in FB so and an operation amplifier is placed between RFB, the 2) of voltage VTAP(graph that arrives in order to magnify RFB is collected. IF=VTAP/RFB=(VFB/RFB)*(1 RF/RI) (3) normally, the typical job electric current of 1W high-power LED is 350mA, if choose RFB to be equal to 1 ohm, criterion the power comsumption of RFB is: PRFB=I2*R=0.352*1=0.12W (4) considers the power comsumption of operation amplifier itself, RFB reachs his 12% what the power comsumption of accessary circuit is 1W LED power about. Can be in so ensure LED obtains constant current power supply while, reduce the power comsumption of RFB the level that can accept, make thereby the voltage of two end of LED as far as possible big, shed the electric current of classics also as far as possible big. The manostat that national semiconductor works according to this principle has LM2736 and LM2734. LM2734 is 1A step-down manostat. The circuit of constant current drive that is based on LM2734 (the tension that graph 3) uses LM321 operation amplifier to get sampling resistor Rset to go up, combinative other resistor and capacitance can constitute a complete, efficient high-power LED constant current drive circuit. In be used actually, circuit of drive of some LED constant current can get feedback tension from sampling resistor directly, if pursue,4 are shown. Graph 3 in the design that sampling resistor Rset decided circuit of constant current drive, and have main effect to the efficiency of whole system, because this careful design Rset is right economic energy resources is crucial. Graph 3 with the graph the detailed design file of 4 is asked to accredit of national semiconductor place cent sells business to ask for. Generally speaking, if ask the change of LED drive electric current does not exceed nominal of the value 5% to 10% , so use precision to be the resistor of 2% enough. The typical and fluctuant limits of LED drive electric current is to be being lost 10% . The power that consumes as a result of sampling resistor is greater, should avoid those who make diligent rate minor to stick a resistor. In addition, LM3478 plan applies to the constant current drive of many high-power LED, and the application that the constant current drive that is based on LM5021 designs plan to be aimed at 220V AC/DC converter. Constant current drive and come loose to consider hotly to be designed with respect to electronic system, the engineer wants to know the constant current parameter of LED above all when designing circuit of drive of LED constant current. The manufacturer of LED chip is very at present much, the difference of domestic and international LED basically depends on the circumstance of same report parameter falling, lumen number may be different, because this designs an engineer,should realising LED power clearly is not the exclusive parameter of decision glow efficiency. For example, it is the LED of 1W likewise, some LED can achieve the brilliance of 40 lumen, and some brilliance that can achieve 20 lumen only, because LED optical efficiency still depends on,this is material and a lot of link such as the craft that make. Some designs engineer adopts the measure that increases drive electric current to improve glow efficiency, for example, to same a 1W LED, after increasing drive electric current, brightness can raise 40 lumen from 20 lumen, but the working temperature of LED also lifted accordingly. Once temperature exceeds the bounds of LED lukewarm dot, with respect to the life that can affect LED and dependability, this is the serious problem that the attention needs in designing process of constant current drive. In addition, the optical efficiency of LED lighting system depends on not just plan of drive of LED constant current, still with whole system medicinal powder closely related hot design. For contractible bulk, system of drive of certain LED constant current LED drive circuit and medicinal powder design of hot part press close to, affect reliability so easily. Generally speaking, the heat source of LED lighting system is main the heat source that is LED lamp itself, heat source can produce hot loss centrally too, because of circuit of this LED drive cannot with medicinal powder hot system is clingy together. The proposal adopts following medicinal powder hot measure: LED lamp uses aluminous substrate to come loose hot; Power parts of an apparatus discharges cloth equably; Avoid as far as possible LED drive circuit and medicinal powder design of hot part press close to; Restrain the hot impedance that is enclosed to printed circuit substrate; Raise LED chip medicinal powder hot smooth sex is fought with reducing thermal resistance. 500)this.style.width=500;” Border=0> expresses 1: High-power LED has very large dominant position on life. New application is called to the requirement high-power LED of driver ” green illuminant ” , it will to big LED electric current (300mA comes 1.4A) , efficient (60 to 120 lumen / made of baked clay) , the way with adjustable brightness develops. Because high-power LED has very large dominant position on life (express 1) , development perspective is very so wide, among them most the illume application that is valued is environment of equipment of car, medical treatment and instrument appearance and illume of other special type. But these application also raised new requirement to design of LED drive system, include: Input voltage limits asks to arrive for 6V commonly 24V; Have impact laden protection, had mixed instead press protection; Bide one’s time power comsumption is very low; Small band is unoccupied place fiducial detect in order to reduce electric current loss and the function that have PWM to adjust brightness. Be aimed at these demand, company of American country semiconductor offerred driver of whole set LED to devise plan (2) seeing a table, can offer comprehensive LED driver solution for the user. LED lighting system needs have the aid of to shed power supply at constant, at present the program of design of constant current drive of the mainstream is to use the feedback circuit with linear or specific union of switch DC/DC manostat to provide constant current power supply for LED, according to the difference that circuit of DC/DC manostat periphery designs, can divide again for driver of inductance LED driver and switch capacitance LED. Plan of driver of inductance step up its advantage is drive electric current taller, the upright voltage of LED inferior, efficiency maintains inferior, power comsumption changeless, special apply to drive the application of many LED. In design of high-power LED driver, basically adopt plan of drive of switch capacitance LED, the voltage that its advantage is two end of LED taller, has flowed electric current is bigger, achieve taller effect and optical efficiency thereby. Advanced switch capacitance technology still can improve efficiency, apply in high-power LED drive consequently extensive. 500)this.style.width=500;” Border=0> expresses 2: The schedule of LED driver solution of American country semiconductor. Lighting engineering of LED of high-power of article brief summary is having wide development perspective, get consequently of widespread attention and investor chase after hold in both hands. Show level, because LED chip designs the limitation that waits for a lot of element with production technology and material, it still cannot replace traditional incandescent lamp completely temporarily, consequently people pays close attention to the high-power LED application in special type illume more. The article introduced special type illuminative to apply an environment above all, next, elaborated in detail use DC/DC manostat to realize constant voltage to turn the fundamental that constant current designs and real case, showed high-power LED driver design and medicinal powder the item that hot part design should notice, pointed out high-power LED new application designs the new requirement that raise to driver finally, gave out the guideline of the complete solution of national semiconductor company, it conduces to the electron that pursues LED illume trade designing an engineer to master newest LED driver system to design a technology in the round.

Content summary: The key that illume designs depends on coordinating the relation between natural light and man-made light, make illume effect presents the change that gives rich and colorful ceaselessly in a day. The home, had light, just have temperature and feeling more it seems that, had rich expression. If why develop the natural intelligence of animals of lamplight faultlessly? If where,change somewhat in the bedroom of expectation and not drag in many people to do sth? If where residential requirement is general, and does lamplight let all extend magic power below the circumstance of make public of individual character of do one’s best? This is lamplight illuminative design not 2 law. The key that illume designs depends on coordinating the relation between natural light and man-made light, make illume effect presents the change that gives rich and colorful ceaselessly in a day. If want to solve lighting problem in the round, must consider each a day of time paragraph in all spaces piece the radial effect of the face, and should give to natural illuminant and man-made illuminant coequal take seriously, cannot somewhat do one thing and neglect another. If indoor lamplight is aspersed equably to everywhere, illume effect can appear bland. If do not have a shadow,change or contrast of light and shade come dash forward the depth that shows a space and range. The dynamic beauty of a bedroom is shown without place, this one form gets used to the natural light at a few forms and man-made light. Accordingly, be good at accepting or reject when doing indoor illume to design is very important, that is to say, must make clear what area to should offer the most sufficient illumination, best immersion is in what area in darkness, once this come down clearly,can undertake corresponding illume is designed. For instance, you can install a few small the artwork that shoots the lamp to remind people the attention is valuable is collected, can displaying ark clapboard remove theatrical makeup and costume a few conceal the light is shot below type, in order to highlight the display in ark. And in bedroom or living room, because its are the place that host loosens him, so the lamplight of this space had better be the lamplight of adjustable brightness, such but as spirit, mood what differ and control environmental brightness is different. And in repast area, the lamplight here had better be downy and bright, both neither dazzling, do not send dim luminous environment again, such, good appetite is brought when giving repast not only, also brought talk good humor. Pass through the light that shoots character with translucent material glossily for instance, perhaps reflex the light that give through the surface with rough appreciably, the effect is exceedingly good. Still need to remind you of a bit is the ambient light that serves as household, had better be neuter color, or light strip and lustre is very weak, give the object all round a real colour report so, ability can make the person’s eye more comfortable, the mood is more stable. Successful illume devises plan, what should design element to cooperate with other decorate is proper, bring out the best in each other. The key still depends on making accept or reject correctly, decide what area should be highlighted mainly, what area should retreat house behind the curtain, the imagination that develops you adequately can create an illume effect that has appeal most.

Disagree to project of LED night scene in the light of somebody, he Lifeng became an explanation technically. He says, night scene project besides play the part of bright Xiamen besides, the mainest effect is the development that promoted group of LED photoelectricity industry, because Xiamen uses whole town to advertise for LED, conveyed Xiamen to develop the determination of photoelectricity industry. Xiamen is in LED respect and world now basic synchronism. LED still strip lights Xiamen have an unexpected results. He Lifeng says, the country adjusts the policy of income tax likely, but changeless to the favourable policy of industry of new and high technology, and LED is new and high technology, be restricted so in other industry when, develop LED instead the chance is better. He Lifeng discloses say, government of province of provincial Party committee has decided to be being saved completely other 8 city popularize project of LED night scene in the round. Additional, 229% LED illuminant power consumption is common light source only.