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70997 2009 年 02 月 08 日 17:02 Reading (loading. ..) Comments (0) Category: Personal Diary
; 20th century, 70 years appeared worldwide energy crisis, the sense of urgency to make a lot of energy saving energy saving light source and the company is committed to electronic ballasts of fluorescent lamps, with the rapid development of semiconductor technology, various high Anti-voltage power switching devices continue to emerge,
gucci sunglasses, the development of electronic ballasts to provide the conditions for the late 70s, foreign manufacturers to market with the first generation of electronic ballasts, lighting, history is a major innovation. Because of its many advantages such as energy, caused great concern and interest in the world, that is the ideal product to replace magnetic ballasts,
gucci heels, and then some famous enterprises have invested considerable human and material resources to carry out higher level research and development. As microelectronics technology advances, the electronic ballast for high-performance high reliability to the direction of development, many semiconductor companies with dedicated power switching devices and control circuits of the series, 1984, Siemens has developed a TPA4812 and other active electrical power factor correction IC, power factor is 0.99. Some companies then launched an integrated electronic ballast, 89 years the company has successfully launched 芬兰赫尔瓦 Lee monolithic integrated circuit electronic ballast dimmable, electronic ballasts in the world,
cheap gucci shoes, especially developed countries currently have national application .
of research and development of electronic ballasts late start, low level of technology, early on the product's inadequate understanding of the difficulty and complexity of dedicated semiconductor device development has not kept up,
cheap gucci heels, pass the test product quality, and extreme market not standardized, was thrown a large number of low-priced lemons market, so that consumers suffer, serious harm to the image of the electronic ballast. The late 90's, due to the rapid development and production levels have increased, from circuit design to support electronic devices have entered a more mature stage, high-quality products into construction projects,
gucci sale, with the implementation of China's green lighting project for the promotion of electronic ballast applications paved the way for domestic electronic ballast will quickly catch up with international advanced level, in the competitive international market place.
electronic ballast definition: use of semiconductor electronic components,
gucci outlet, the DC or low frequency AC voltage into a high-frequency AC voltage to drive low-pressure gas discharge lamp (germicidal lamp), halogen tungsten lamp light sources such as the work of the electronic control device. The most widely used is a fluorescent lamp electronic ballasts.
electronic ballast points: fluorescent electronic ballasts, high pressure sodium lamp electronic ballast, metal halide lamp electronic ballasts. As the use of modern technology and advanced soft-switching inverter active power factor correction technology and electronic filtering, has a good electromagnetic compatibility, reducing the ballast its loss.