Sound card shield manufacturers, what should be paid attention to in the design and production + 3.0 precision design system

The sound card shielding cover manufacturer, the shielding cover is an alloy metal cover, which is a vital component to reduce the radiation of the display. It can effectively reduce the mutual interference between the module and the module when used in MID or VR products. As shown in the figure, it is common in The isolation between the main control function module and the power supply module and the Wifi module. Xiaoshuo takes everyone to see what issues should be paid attention to in the design of the motherboard shielding cover: Generally, there are products that use wireless communication, and usually a shielding frame is designed on the circuit board (to isolate electromagnetic interference (EMI), but the shielding frame should be used. Function, generally need to use two parts, one is the shielding frame made by SMT, and the other is the shielding cover, so more than two sets of press molds are required. The surface of the shielding frame is mostly hollowed out. It is directly welded to the main board. The shielding cover is buckled on the surroundings and directly buckled on the shielding frame. This is convenient for disassembly and maintenance, without removing the shielding frame, but just removing the shielding cover directly. In MID or VR products In PCB design, we often shield some modules. 1. Power module (PMU+DCDC+LDO) Usually the power module is used as a heat source and interference source to exist on the PCB, and a shielding cover is added to it to effectively reduce Its external radiation interference. 2. Core module (CPU+DDR+Flash[EMMC]) The core module is the core part of the PCB. Stable and undisturbed operation is an important part of the stability of the system, as it is vulnerable to external interference. The module usually also designs a shielding cover to shield it. 3. As the integration of the module continues to increase, the WiFi module also integrates many other functions, such as Bluetooth. The more integrated, the more the WiFi Signal reception produces interference. Another main source of interference is the components on the PCB. The high-frequency circuits when they are working will produce strong interference. At this time, most brand manufacturers will use shielding to remove or weaken the antenna from the motherboard. Metal shields are a good choice because they can effectively shield the influence of electromagnetic waves on internal circuits. Of course, they also block the electromagnetic waves generated inside from radiating. Of course, the location of the antenna is also important. Generally, the side of the board is relatively clean. Demonstrated a Wifi Bluetooth module with shielding cover. Hardware, 15 years of focus on sound card shielding manufacturers, 20,000+ sets of customized stamping mold production experience, monthly processing capacity of 100+ sets of molds, hundreds of precision processing production equipment, daily The production capacity of 3 million punching times, the precision of silk-like stamping can reach 0.01mm, the raw materials are imported and the original national standard factory, and 16 quality inspections are strictly controlled.