久久久久三级亚洲小电影国产|白云专区无码久久|亚洲国产精品VA免费|韩日精品探花

1. Circuit design principle and technology

Only from a professional perspective can the principle of the circuit and the quality of the circuit be distinguished. Currently, power modules can be divided into bare boards and filled and sealed. Bare boards can be divided into two categories in an intuitive way, such as the layout of electronic components is reasonable, orderly, generous, orderly, bright solder joints, and straight. However, the packing and sealing module cannot see the internal situation, but since it is not exposed, it is much better in terms of safety and performance indicators. The soldering process can include manual soldering and wave soldering. The welding quality of mechanized wave soldering is better than manual welding.

2. Chip components

The core of the power supply is the integrated circuit, which is like the brain of the power supply. The quality of the integrated circuit directly affects the parameters of the power supply.

3. Transformer parts

Make sure that the power supply, temperature resistance, etc. are transformers. The transformer is responsible for the completion of AC and DC power, and the energy overload will saturate the bomber.

4. Electrolytic capacitors and ceramic capacitors

Electrolytic capacitors and monolithic capacitors, which use sulfuric acid as an insulating medium, can make the capacity smaller, and add + signs and some marking symbols on them. They are generally used for low-frequency cross-linking and bypass filtering. Stone electrolytic capacitors are large. Due to the use of special materials, the performance is better than ordinary electrolysis, and the frequency characteristics are better, but the capacity cannot be made too much. It can be used in precision circuits, such as oscillation or timing circuits.

Ceramic capacitors include ceramic dielectric capacitors, ceramic chip capacitors, ceramic tube capacitors, and ceramic semi-variable capacitors. It is mainly non-polar, the medium material is good, and the capacity cannot be made too much. Suitable for high frequency circuits.

5. Batch inspection and high temperature aging test

No matter how well the product materials and production process are controlled, it is necessary to detect aging. Since the input detection of electronic components and transformers is difficult to control, only through the aging and high temperature sampling of the entire batch of power supplies can the quality stability of this batch of power supplies and whether the materials have safety hazards can be detected.

6. Management methods and incoming materials

Finally, strict management methods and supervision of incoming materials will ultimately become the ultimate guarantee for the quality of its power products.