The 45W MagSafe Power Adapter has a magnetic DC connector, so if someone trips on it, the power cord disconnects harmlessly, keeping your MacBook Air safe. It also helps prevent the cable from fraying or weakening over time. Additionally, the magnetic DC helps guide the plug into the system for a quick and safe connection.
45W Macbook charger air,macbook 45watt charger,45W Macbook pro charger Shenzhen Waweis Technology Co., Ltd. , https://www.waweispowerasdapter.com
Saving energy and saving money is the last word
Incandescent lamps are gradually withdrawing from the market and replaced by energy-saving lamps of various brands. The current transition period seems to be coming to an end. However, on the shelves of individual supermarkets, 100 watts of ordinary incandescent bulbs are still occasionally seen, which is obviously related to the country. The regulations are contrary.
The reporter asked the salesperson about the reason, and the answer was that it was some inventory that was entered last year. Ordinary incandescent lamps are still favored by some older customers because of their low price. In order to take care of the emotional needs of these customers, they will be sold for a while, and will not be purchased after they are sold out. The incandescent lamp is off the shelf.
According to sales people, ordinary incandescent bulbs are cheap, but their lifespan is only 1,000 hours, and the life of an energy-saving lamp can reach 6000-8000 hours. Obviously still use energy-saving lamps cost-effective. The instructions on the outer packaging of some energy-saving lamps also illustrate this point: a 100-watt OSRAM energy-saving lamp can be used for 8 years according to the daily use of 2.7 hours; an 8-watt Op energy-saving lamp is calculated for 5.5 hours per day. It can be used for 4 years; a 5 watt Philips energy-saving lamp is calculated for 5.5 hours per day and has a life expectancy of 3 years.
The salesperson calculated the account for the reporter: Suppose a 60-watt incandescent bulb and an 11-watt Philips energy-saving lamp sell for the same price, both at 15 yuan/piece, but the power consumption is quite different, incandescent The power consumption is 360KWh, while the energy consumption of energy-saving lamps is 66KWh (1KWh and 1 degree electricity are the same); according to the calculation of 0.61 yuan per kilowatt, the electricity cost of incandescent lamps is 0.61 yuan / kW × 360KWh = 219.6 yuan, and The electricity cost of the energy-saving lamp is 0.61 yuan × 66KWh = 40.26 yuan; then the cost of purchasing 15 yuan is included, and the energy-saving lamp can save the cost of 179.34 yuan.
LED industry will be good for a long time
In fact, the state subsidies for energy-saving lamps not only benefit ordinary consumers, but also let the LED industry in the critical moment of “overcapacity†see the dawn. Taking a 25-watt LED lamp as an example, the illumination brightness is the same as that of an ordinary incandescent lamp of 125 watts, but the power consumption is reduced by nearly 5 times and the service life is also increased several times. At present, although the price of LED lights and energy-saving lamps is higher than that of incandescent lamps, it is still the mainstream of sales.
The delisting of incandescent lamps means long-term positive for energy-saving lamps such as LEDs. According to data revealed by Zhang Xiaofei, president of the Higher Industrial Research Institute, according to conservative estimates, due to overcapacity, the number of LED companies that closed down last year has exceeded 10%. Among them, there are more than 100 packaging companies and 300 lighting companies, most of which are small businesses. However, the peaks and turns, the dark and the bright, with the state's policy support for energy-saving lamps gradually in place, the turnaround and benefits are in sight.
Under the background of the country's vigorous promotion of energy-saving emission reduction and low-carbon economy, the LED lighting industry is developing rapidly. At present, China has initially formed four major semiconductor lighting industry cluster areas in the Pearl River Delta, Yangtze River Delta, Northern Region, Jiangxi and Fujian regions, and the initial construction of epitaxial wafer production, chip preparation, package integration and LED application industry chain.
Such a huge industrial development will obviously stimulate the development of energy-saving lamps and generate huge stamina. Take street lamps as an example. According to statistics, the stock of street lamps in China is between 28 million and 30 million. In recent years, the number of new street lamps has increased by 15%-20% every year, about 3 million-6 million baht. In 2010, the installation of LED street lights and tunnel lights was about 500,000 baht. In 2011, the installed capacity was less than 1 million baht, with an annual increase of more than 50%. It is expected that under the policy boost, LED street lights will continue to grow at a higher rate in 2012, with installations reaching more than 1.5 million baht. According to the number of newly added street lamps, LED lamps are counted every year, with an annual increment of 3 billion to 6 billion yuan.
Semiconductor lighting
Tian Bosheng, a researcher in the optoelectronics industry of China Investment Consulting, pointed out that for the incandescent lamp industry, the complete elimination of the use of incandescent lamps for general lighting is a fatal blow to the industry. The performance of lighting companies that produce incandescent lamps will be greatly affected. However, in recent years, incandescent lamp companies have shifted to high-efficiency lighting products such as energy-saving lamps. In addition, the demand for energy-saving lamps in the market has increased. The possibility of enterprises that originally produced incandescent lamps to maintain performance growth through transformation is still very large. In the process of eliminating the use of incandescent lamps for general lighting, the energy-saving lamp industry will benefit from the increase in market demand and will usher in a period of strong demand.
In addition, if China's semiconductor lighting market share accounts for 30% of the general lighting market in 2015, it can save about 100 billion kWh per year, reduce carbon emissions by 98.99 million tons, and contribute about 1% to the reduction of energy consumption per unit of GDP; The annual market share can account for 50% of the general lighting market, and the annual electricity saving is about 340 billion kWh, which is equivalent to the annual total power generation of the four Three Gorges projects. In addition, compared with the currently widely used energy-saving lamps (CFLs), semiconductor lighting products contain no mercury, less waste, and almost no pollution in the manufacturing process; semiconductor lighting products are recyclable, recyclable, and socially economical. Sustainable development plays an important role.
The ban is effective: the energy-saving lamp transition LED lighting welcoming machine
According to relevant data, the total electricity consumption of China's annual lighting is about 500 billion kWh, accounting for 13% of total electricity consumption, accounting for 6% of energy consumption, and growing at a rate of 5%-10% per year. The total electricity consumption is still high. Therefore, it is foreseeable that the development potential of energy-saving lamps in the future will be huge and will usher in a period of rapid growth.