The DC switching power inverter supply uses high-speed conduction and cut-off through the circuit control switch tube, and the AC power is supplied to the transformer for voltage transformation into high-frequency DC power, thereby generating one or more sets of voltages required! The reason for the conversion to high-frequency AC is that the efficiency of high-frequency AC in the transformer transformer circuit is much higher than that of 50HZ, so the switching transformer can be made very small, and it is not very hot when working! The cost is very low. If you do not turn 50HZ into a high frequency, then there is no point in switching the power supply.
working principle
- The AC power inverter input is rectified and filtered into DC;
- Control the switching tube by high frequency PWM (pulse width modulation) signal, and add that DC to the primary of the switching transformer;
- The secondary of the switching transformer induces a high-frequency voltage, which is supplied to the load through rectification and filtering;
- The output part is fed back to the control circuit through a certain circuit to control the PWM duty cycle to achieve the purpose of stable output. When the AC power input is input, it generally passes through something like the E-flow circle to filter out the interference on the power grid and also filter out the interference of the power supply to the power grid. When the power is the same, the higher the switching frequency, the smaller the volume of the switching transformer. However, the requirements for the switching tube are higher; the secondary of the switching transformer can have multiple windings or one winding with multiple taps to obtain the required output; generally, some protection circuits, such as no-load, short-circuit, etc., should be added. Otherwise, the switching power supply may be burned out. Mainly used in industry and some household appliances, such as televisions, computers, etc.
DC switching power supply
Straight and main circuit The entire process from the AC grid input, DC output: - Input filter: Its function is to filter the clutter existing in the power grid, and also hinder the clutter generated by the machine from being fed back to the public power grid.
- Rectification and filtering: The AC power supply of the power grid is directly rectified into a smoother DC power inverter for the next level of transformation.
- Inverter: The rectified DC power is changed into high frequency AC power, which is the core part of the high frequency switching power supply. The higher the frequency, the smaller the ratio of volume, weight and output power.
- Output rectification and filtering: Provide stable and reliable DC power supply according to load requirements.
Application characteristics - Reduce the porosity, the formation speed of the crystal nucleus is greater than the growth rate, and promote the refinement of the crystal nucleus.
- Improve the bonding force and break through the passivation film, which is beneficial to the firm bonding between the substrate and the plating layer.
- Improve coverage and dispersion ability. The high cathode negative potential can also deposit the passivated parts in ordinary electroplating, and slow down the “scorch” and “dendritic” caused by the excessive consumption of deposited ions. The defects of deposition can be reduced to 1/3~1/2 of the thickness of the coating (for example, color, no porosity, etc.) for a given characteristic, saving raw materials.
4, reduce the internal stress of the coating, improve lattice defects, impurities, voids, tumors, etc., easy to obtain crack-free coating, reduce additives.
5, is conducive to obtaining a stable alloy coating. - Improve the dissolution of the anode without the need for an anodic activator.
- Improve the mechanical and physical properties of the coating, such as increasing the density, reducing the surface resistance and bulk resistance, improving the toughness, wear resistance, corrosion resistance and controlling the hardness of the coating.
High frequency switching DC power inverter supply
The high-frequency switching DC power supply is based on high-quality imported IGBT as the main power device, and the ultra-microcrystalline (also known as nanocrystalline) soft magnetic alloy material is the main transformer core. The main control system adopts multi-loop control technology, and the structure adopts prevention. Salt spray acidification measures. The power product has a reasonable structure and high reliability. The power supply has become a new generation of thyristor power supply with its small size, light weight, high efficiency and high reliability. Suitable for various precision surface treatment sites such as experiment, oxidation, electrolysis, galvanizing, nickel plating, tin plating, chrome plating, photoelectric, smelting, chemical formation and corrosion. It has also been well received by users in anodizing, vacuum coating, electrolysis, electrophoresis, water treatment, electronic product aging, electric heating, and electrochemistry. Especially in the field of PCB, electroplating and electrolysis, it has become the power supply of choice for many customers.
POWER INVERTER 