The charger (charger) is divided according to the operating frequency of the design circuit, which can be divided into industrial and high -frequency machines. The industrial frequency machine is designed based on the traditional simulation circuit principle. The internal power devices (such as transformers, inductors, capacitors, etc.) are large. Generally, there is a small noise when the carrier is large. The environmental conditions of the power grid are strong in resistance, and the reliability and stability are stronger than that of high -frequency machines.
The high -frequency machine uses a microprocessor (CPU chip) as the processing control center. It is a complicated hardware analog circuit burning in the microprocessor and controls the operation of the UPS by software program. Therefore, the volume is greatly reduced, the weight is greatly reduced, the manufacturing cost is low, and the price is relatively low. High -frequency turning frequency is generally above 20kHz. However, high -frequency machines have poor tolerances under harsh power grids and environmental conditions, and are more suitable for the environment with stable and less dust and suitable temperature/humidity.
Comparison of high -frequency machines and industrial frequency machines: small size, light weight, high operating efficiency (low operating cost), low noise, suitable for office space, high cost performance (under the same power, low price), on space and environmental impact on space and environmental impact Small, relatively speaking, high -frequency charging motors are susceptible to the impact (SPike) and Transient response caused by a copy of the copy, laser printer and motor. In a harsh environment, the industrial frequency machine can provide safer and reliable protection than high -frequency machines. On some occasions such as medical care, the charger is required to have isolation devices. Therefore, for industrial, medical, transportation, etc. Good choice. The choice of the two should be considered according to the different customers, the environment, and the load conditions.
