Ding Wenwu, Director of the Electronic Information Department of the Ministry of Industry and Information Technology, said that in the "Twelfth Five-Year Development Plan for Electronic Information Manufacturing Industry" released not long ago, standards development was an important task, and it was also an impetus for the development of the electronic information industry. Important link. The issuance and implementation of these two new electronic product safety standards will play an important role in improving the safety technology level of electronic equipment in China and promoting the import and export trade of electronic products.
"These two standards cover a wide range of electronic products, including televisions, audio equipment, computers, monitors, fax machines, mobile phones, laptops and their adapters, printers, etc. Consumers have a wide range of uses, the highest frequency of use, and their safety Performance is extremely important.†Zhao Bo, Dean of the Institute of Electronic Standardization of the Ministry of Industry and Information Technology, said that the new standard is based on years of research and experimental verification. According to China’s special conditions such as climate, geography, and power supply facilities, the adoption of international standards Under the basis of the country's deviation from the country. "This is an important breakthrough in the history of the revision of China's safety standards."
It is understood that the technical content and requirements involved in the deviation have been greatly changed. The national standards established in accordance with international standards in the past are only applicable to altitudes below 2,000 meters. The new standard will increase this altitude to 5,000 meters above sea level. This increase in height means that the structure or identity of the device may have to change. In addition, according to China's climatic conditions and the particularity of the power supply facilities, corresponding additional requirements have also been added. For consumers living in high altitude areas, hot and humid climate conditions (including the middle and lower reaches of the Yangtze River) and rural areas with relatively poor power supply conditions, the implementation of the new version of the standard will play an important role in protecting the lives and property of consumers. .
The main circuit of the equipment is the full bridge controlled circuit and the trigger circuit is the programmable integrated circuit. The phase-shifting, fixed width and modulation of the pulse are all digitized, and it does not need any adjustment for the section of the trigger. It has the features of high reliability, high pulse symmetry, strong anti-interference ability, quick reaction, as well as the advantages of no heat-generating, constant current, energy-saving which is compared with the discharge with the electrical resistance.
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