On May 28, the government of guangdong province held in guangzhou "the popularization and application of LED lighting products work conference," officially come on stage "to promote the use of guangdong province LED lighting product implementation plan. "The plan" is the overall objective of: the 3 years popularity LED public lighting, and through the popularization and application of project implementation, realize the year-on-year caliber illumination energy conservation by more than 50%, pull the LED industry to "1025" final achieve output of battery for HSTNN-Q34C,  500 billion yuan of above.

Among them, took the lead in the public lighting fields, namely road, public, government agencies and state-owned enterprises and institutions of state-owned capital investment financial or construction lighting engineering field, from the date of execution of the scheme, all above field new lighting project shall be by LED street lamp, garden lamp and landscape lamp lighting products. In addition, the original didn't use LED lighting products, in the three years to 2014 by the end of that partial reconstruction implementation stage finish. The pearl river delta region in 2 years to time, by the end of 2013 before the finish.

ZhuXiaoDan governor of guangdong province, said the plan "with the collection of electricity by public utilities additional power saving benefits of recycling realize the system arrangement, give full play to the government" the visible hand and market "invisible hand" role in industrial development and at the same time pulling LED realize energy conservation and emission reductions, shows that the government target and the height of the target market consistent, can effectively to the Shared interests and mutual benefit and win-win, for transfer and social resources, the full implementation of the LED lighting products into the new driving force, and to promote economic development mode change to have the important meaning.

By the end of 2011, guangdong LED high quality 537626-001, lighting demonstration engineering has application LED street lamp 250000 light, pull the LED lighting industry output value exceeding 150 billion RMB yuan, the scale ranks the first place. 

Surface mount technology in reducing electronic products volume, weight and improve the reliability of the outstanding advantages, catering to the future manufacturing technology requirements. But, to formulate and choice for specific products assembly process is not a simple surface things, because the SMT technology is involved in a number of technical complicated system engineering, any a factors will affect battery for 537627-001, change in electronic products of welding quality. Components of solder joint direct influence on the quality of welding is printed circuit components (PWA) and the quality of the key factors. It is the influence of many parameters, such as the solder paste, base board, components weldability, printing, mounted precision and welding technology, etc. We in the SMT technology research and production, know that the surface of the reasonable assembly process technology in control and improve production quality SMT play a crucial role. The article is trying to meet some of the typical defect of welding mechanism analysis, and put forward the corresponding solutions.

The existence of the tin ball that process not exactly right, and electronic products have the danger of short circuit, and therefore must be ruled out. International ball to zion there recognized standards is: printed circuit components in the 600 range can't appear more than five tin ball. The cause of the ball produce tin has a variety of, need to find the root of the problem.

Reflow soldering tin in the ball out, often hidden in rectangular chip components between the two sides of the distance between pins or fine. In components mounted process, the solder paste is placed in a chip of components of the pin and welding between disk, along with the printed circuit board is through the reflow oven, melting into a liquid solder paste, and welding plate and device if pins and wetting is bad, the liquid will shrink and make for soldering welding seam filling not fully, all solder particles can't polymerization into a solder joints. Part of the liquid soldering welding outflow from, form tin ball. Therefore, soldering and welding plate and device pins to poor is affecting the root cause hp Pavilion g7 battery,  of the formation of the ball.

Last year, spreadtrum chairman and CEO said LiLi tour, in the summer of 2012, spreadtrum from 2.5 G to 3 G, 4 G, from ultra low, low to high end, from function machine to smartphone, all products are all will go into 40 nm era, and single chip

May 29, news "early last year, because spreadtrum rolled out of 40 nm chip, our basic baseband TD swept the market, but 40 nm stories continue to ferment, spreadtrum vice President kang in 2012 a new spreadtrum recommendation conference said.

Last year, in TD terminal chip market, spreadtrum's hp ProBook 4710s battery,  share up to 55%.

At present, in China mobile TD flagship machine, samsung GalaxyS ? and most popular samsung GalaxyNote adopted the spreadtrum 40 nm baseband chip the TD. In may this year and has listed the first section after four nuclear TD HTConeXT and new mobile phone to VT one thousand yuan intelligent cell phone also adopted the spreadtrum 40 nm chip SC8803G of baseband and rf SR3200 chip.

In the 2 G chips, spreadtrum in last year's new product introduction meeting had released three paragraphs competitive GSM/GPRS baseband chip, including multimedia function for mobile phone using the SC6800H ARM9 kernel, and two for the low end of the market function machine SC6610 and SC6620.

At that time, kang said, if the iPhone as "mercedes-benz", "BMW," so, Mercedes BMW is difficult to make mobile Internet gain popularity. For the low end products is concerned, the core competitive ability is to reduce cost. Spreadtrum put some used for high-end phones for the low end of the means of cell phone, in SC6800H provide support to the WiFi, makes the use of mobile phone users function in a low cost popular mobile Internet.

ISuppli report predicts, 2.5 G / 2.75 G to 3 G smartphones will battery for A1322,  function machine market pressure, profitable time window for a year and a half to two years.

The three-phase circuit in engineering and widely used in daily life, in the circuit course is also an important part of the content, in order to gain the understanding of the characteristics of the three-phase circuit, especially to the midline in asymmetric three-phase circuit the understanding of the role, in the teaching design, often on the basis of theoretical analysis, the arrangement for verification. But because of the three-phase circuit in 220 V power supply voltage are above, so the actual operation risk is higher, especially for asymmetric three-phase three wire in a short circuit, if want to verify the other two phase of work, not only burn down the fuse or even damage device. If use Muhisim software to the simulation, not only safe, reliable, and overcome many of the physical experiment is insufficient, and image, intuitive, and can improve the learning interest of the students.

Multisim IIT is Canada launch electronic circuit simulation battery for F700 battery,  software EWB upgrade edition, it of the circuit to create, circuit test analysis and simulation results in a content such as integration circuit window. Multisim components library provides a thousands of types of components, one of the virtual components can be modified according to need any device parameters, and even users can also create a new components. Multisim also offers many virtual instrument, such as the oscilloscope, the logical analyzer, agilent instrument, signal generator etc, its function and practical instrument is same, can be convenient to the circuit simulation test analysis. Multisim circuit analysis function is very strong, able to dc operating point, ac analysis, Fourier analysis, noise analysis and so on many kinds of analysis.

In theory the three-phase circuit is symmetrical, whether three wire or four wire, each phase load voltage and current of both ends through is symmetrical, namely the size is equal, four wire line in current should be zero. In order to analyze convenient, only the simulation current, the results of simulation as shown in figure 1, figure 2 shows, it can be seen that two cases of three-phase load current is equal to 454.583 mA, high quality 607763-001, the center line current of 0.512 fA also about equal to zero (mainly caused by error). The student is very easy to get measurement results such as ": the three-phase circuit for symmetry in circuit normal work, no matter whether the current in the midline plus three-phase load or voltage are no hair changes that the Central Line doesn't work, can be removed. 

Recently, state department, by guangdong semiconductor lighting engineering and industrial union sponsored by "LED lighting standard light component project conference" (hereinafter referred to as, standard light component) held in guangzhou smoothly.

Guangdong LED lighting technology and product battery for CQ40 battery, promotion application joint conference member unit, the provincial department, guangzhou, shenzhen, foshan, dongguan, zhongshan, huizhou, zhuhai, jiangmen city such as secretary responsible for comrade, international semiconductor lighting alliance of guangdong province, the semiconductor lighting industry joint innovation center, province and city association, south China university of technology, zhongshan university, south China normal university, guangdong industrial university and other institutions represent, domestic listed enterprise, leading enterprises LED such as representatives of more than 300 people to attend the conference.

By the deputy head of guangdong province YeJing figure in the meeting was the important speech, he said, the standard component research projects of light and implement training for our national brand, break through the international patent blockade, to deal with the international market competition, the research and development of core technology is big help, will be to the whole country LED industry, and even the whole world of LED the development of the industry play a crucial role. Provincial department hope to speed up the standard light component projects and implementation, guangdong province will be in LED lighting demonstration project priority in purchasing standard light component products.

Expert introduction, popular terms, standard light component is equivalent to the computer market compatible with each other on the computer devices. LED industry chain of the upper reaches of the mainly divided into the denotation and chip industry, the encapsulation of the middle and lower reaches of the application industry. But on major, is usually LED lighting products according to the characteristics and the industry chain replacement V6000 battery,  division of labor and application habit, LED lighting components typically divided into six levels, respectively from under the extension and chip, packaging components, modules, and lighting lighting source, lighting, lighting system.

Zhu mountain were revealed that the first quarter of this year the price of polysilicon dropped 58% to about $25.98 per kg. The second season of price and the season on polysilicon flat, but the price of product has ceased to fall, as to when the price will rebound is still unable to predict.  replacement CQ56 battery, He says, the company's product quality is superior, if any lower prices of violation of market rules.

Poly association, chairman of the mountain zhu said yesterday, the European debt crisis drag, make polycrystalline silicon prices plunged nearly 60% in the first quarter this year, recent has gradually rose in price is now about polysilicon $25.98 per kg. Zhu is expected to total mountain, pv business this year will continue to integration, the material will turn next year, the company plans to expand in emerging markets, the United States and the photovoltaic farm business.

Zhu mountain thought of, since this year polycrystalline silicon prices, coupled with Europe debt crisis by drag down, market many worries photovoltaic industry, this leads to investment Banks have cut the company rating is inevitable. But he stressed that poly association xin current production and sales volume ideal, and no backlog inventories.

Solar cells into the traditional season offer up the battery

TrendForce its research department EnergyTrend investigation shows, the United States by the double the ruling affect, and solar installation into traditional season, order heating, Taiwan battery manufacturers offer rise, at present the product offer has come to each tile above $0.5.

The rises products include: traditional conversion efficiency of about 16.6%, and the conversion efficiency of more than 17.2% efficient product. According to TrendForce database dell Studio 1737 battery, shows, early may conversion efficiency 16.6% of the products in every tile offer 0.45 to 0.48 us dollars, and recent offer to 1) is every tile 0.49 to $0.51.

The latest statistics show that the size of the market has LED lights from $2007 in 690 million to rapid growth to $2011 in 1.2 billion, the average growth rate of 13%. Ningbo biggs, executive director, the photoelectric technology building ZhouRen forecast, the future development trend of LED lights will be high power and high power white light lights white lights, such as headlights, front fog lamps, pour lamp, etc. At present, Compaq Presario F700 battery, the car LED lamp mainly divided into LED headlamps (headlights) and LED the lamp.

LED headlamps

LED headlamp in LED light field as the most high-end application, because high power cooling technology problem, its subdivision in international industry is still at the beginning, the global market LED headlamp is still less than 1% of the permeability. At present, only a few other audi A8L several luxurious car equipment LED headlamps.

Car LED lights

The LED lamp has been widely used in the car decoration, car lighting, reading, combination tail light, the brake lights, lights and other small light field. At present, the high the brake lights have become very popular, in the upscale models in LED taillights has also become the mainstream. dell Y9943,  In domestic LED lights (mainly lights) market, Japanese series with high-grade car most, Europe and America with the development of high-grade car up. Roewe, chery, brilliance and the independent brand on the car can be used.

The latest statistics show that the size of the market has LED lights from $2007 in 690 million to rapid growth to $2011 in 1.2 billion, the average growth rate of 13%. Ningbo biggs, executive director, the photoelectric technology building ZhouRen forecast, the future development trend of LED lights will be high power and high power white light lights white lights, such as headlights, front fog lamps, pour lamp, etc. At Compaq Presario CQ43 battery, present, the car LED lamp mainly divided into LED headlamps (headlights) and LED the lamp.

LED headlamps

LED headlamp in LED light field as the most high-end application, because high power cooling technology problem, its subdivision in international industry is still at the beginning, the global market LED headlamp is still less than 1% of the permeability. At present, only a few other audi A8L several luxurious car equipment LED headlamps.

Car LED lights

The LED lamp has been widely used in the car decoration, car lighting, reading, combination tail light, the brake lights, lights and other small light field. At present, the high the brake lights have become very popular, in the upscale models in LED taillights has also become the mainstream. In domestic LED hp 511884-001, lights (mainly lights) market, Japanese series with high-grade car most, Europe and America with the development of high-grade car up. Roewe, chery, brilliance and the independent brand on the car can be used.