According to an analyst conference call held by Apple CEO Cook after the company’s financial report was released, the much-anticipated Apple iPhone 5, the new generation of mobile phones, will formally enter the Chinese mainland market in December and begin to be officially launched. It is reported that this is in line with the news released by China Unicom and China Telecom. In mid-September this year, Li Gang, the deputy general manager of China Unicom, said in an interview with the media: "If all goes well, China Unicom will officially introduce the iPhone 5 before mid-December," and China Telecom subsequently said that it will be the first to introduce the iPhone 5. Apple Partners.
According to the national radio management website, the Apple iPhone 5 has obtained radio licenses on September 27, and it is still required to obtain the last network license of the Ministry of Industry and Information Technology for listing on the mainland of China.
For people concerned about the iPad mini, the reporter learned from local merchants in Chengdu, the fastest next Tuesday evening will arrive in Chengdu, but the price has risen compared to the official price, the initial estimated price of 3,000 yuan.
Aluminum circuit boards is a metal-based copper clad plate with good heat dissipation function. Generally, the single layer is composed of three-layer structure, which is a circuit layer (copper foil), an insulating layer and a metal base layer. Also used for high tech use is designed as double layers, the structure is circuit layer, insulation layer, aluminum base, insulation layer, circuit layer. A very small number of applications are multi-layer boards, which can be made of ordinary multi-layer boards combined with an insulating layer and an aluminum base.
Aluminum PCB characteristics
â— Surface Mount Technology (SMT);
â— Extremely efficient treatment of thermal diffusion in circuit design;
â— Reduce product operating temperature, increase product power density and reliability, and extend product life;
â— Reduce product size and reduce hardware and assembly costs;
â— Replace the fragile ceramic substrate for better mechanical durability.
Aluminum PCB use:
â— Audio equipment
Input, output amplifiers, balanced amplifiers, audio amplifiers, preamplifiers, power amplifiers, etc.
â— Power supply equipment
Switching regulator, DC/AC converter, SW regulator, etc.
â— Communication electronic equipment
High frequency amplifier, filtering appliance, reporting circuit, etc.
â— Office automation equipment
Motor drive, etc.
â— Automotive
Electronic regulator, ligniter, power controller, etc.
â— Computer
CPU board, floppy disk drive, power supply unit, etc.
â— Power module
Inverter, solid relay, rectifier bridge and so on.
â— LED lighting
With the promotion of energy-saving lamps, various energy-saving and beautiful LED lamps have been well received by the market, and aluminum PCB used for LED lamps have also begun to be applied on a large scale.
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