One of the outstanding requirements of PCB power supply is high reliability and high uniformity of coating. PCB power supply adopts new power operation and monitoring circuit, which has large redundancy and can ensure reliable operation of power supply. The uniformity mainly depends on the output waveform of the power supply. The power supply can also reduce the working time, save raw materials and reduce the cost.
1. With the decrease of porosity, the nucleation rate is faster than the growth rate, which makes the crystal nucleus refined.
2. The improvement of adhesion and breakdown of passivation film are beneficial to the firm bonding between substrate and coating.
3. It can improve the covering ability and dispersing ability. The high negative cathode potential can also deposit the passivated parts in ordinary electroplating, and slow down the defects of "scorching" and "tree like" deposition on the protruding parts of complex shape parts due to excessive consumption of deposition ions. The thickness of the coating with a given characteristic (such as color, no pores, etc.) can be reduced to 1 / 3 ~ 1 / 2 of the original, and raw materials can be saved.
4. It is easy to get crack free coating and reduce additives by reducing the internal stress of the coating and improving the lattice defects, impurities, cavities and nodules.
5. The alloy coating with stable composition can be obtained.
6. The dissolution of anode is improved without anode activator.
7. To improve the mechanical and physical properties of the coating, such as increasing density, reducing surface resistance and bulk resistance, improving toughness, wear resistance and corrosion resistance, and controlling the hardness of the coating.
Traditional electroplating has no effect on inhibiting side effects, improving current distribution, regulating liquid-phase mass transfer process and controlling crystallization orientation. The research on complexing agents and additives has become the main direction of electroplating process research. Nano switching power supply solves the defects of traditional rectifier.
8. Improve product yield and product quality.
PCB power supply adopts high-quality imported IGBT as main power device, super microcrystalline (also known as nanocrystalline) soft magnetic alloy material as the main transformer core. The main control system adopts multi loop control technology, and the structure adopts anti salt spray acidification measures. The structure of power supply is reasonable and reliable. The power supply has become the replacement product of SCR power supply with its advantages of small size, light weight, high efficiency and high reliability.
characteristic
1. Small size, light weight:
Its volume and weight are 1 / 5-1 / 10 of SCR PCB power supply, which is convenient for you to plan, expand, move, maintain and install.
2. Good energy saving effect:
Due to the use of high-frequency transformer, the conversion efficiency of the switching power supply is greatly improved. Under normal conditions, the efficiency is increased by more than 10% compared with the SCR equipment, and the efficiency is increased by more than 30% when the load rate is less than 70%.
3. High output stability:
Because of its fast response speed (microsecond level), the system has strong adaptability to the changes of network power and load, and the output accuracy can be better than 1%. Switching power supply has high working efficiency, so it has high control precision, which is conducive to improve product quality.
4. The output waveform is easy to modulate
Due to the high working frequency, the output waveform adjustment is relatively low cost, and the output waveform can be easily changed according to the user's process requirements. This has a strong effect on improving work efficiency and product quality.
