What is a phone charger?

The mobile phone charger uses high-frequency power technology and uses advanced intelligent dynamic adjustment charging technology. The power frequency machine is designed based on the traditional analog circuit principle. The internal power components of the machine (such as transformers, inductors, capacitors, etc.) are relatively large. Generally, there is less noise when the load is larger, but the model is bad. The power grid environmental conditions have strong resistance, and the reliability and stability are stronger than those of high frequency machines.

The charger is divided according to the operating frequency of the designed circuit, and can be divided into a power frequency machine and a high frequency machine. The power frequency machine is designed based on the traditional analog circuit principle. The internal power components (such as transformers, inductors, capacitors, etc.) of the machine are large. Generally, there is less noise when the load is running at a large load, but the model is in a bad situation. The electrical resistance of the grid is strong, and the reliability and stability are stronger than those of the high frequency machine.

The high-frequency machine is a microprocessor (CPU chip) as a processing control center. It is a complicated hardware analog circuit that is programmed into the microprocessor to control the operation of the UPS in a software program. Therefore, the volume is greatly reduced, the weight is greatly reduced, the manufacturing cost is low, and the selling price is relatively low. The inverter frequency of the high frequency machine is generally above 20KHZ. However, the high-frequency machine has poor tolerance in poor grid and environmental conditions, and is more suitable for an environment where the power grid is relatively stable, dust is less, and temperature/humidity is suitable.

Compared with power frequency machine, high frequency machine and small frequency machine: 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), impact on space and environment Small, relatively speaking, the impact of high-frequency chargers on copiers, laser printers and motors (SPIKE) and transient response (TRANSIENT) are susceptible, because the transformer of the power frequency machine isolates the mains from the load, to the mains In harsh environments, the power frequency machine provides safer and more reliable protection than the high frequency machine. In some occasions, such as medical treatment, the charger is required to have an isolation device. Therefore, for industrial, medical, transportation and other applications, the power frequency machine is Better choice. The choice between the two should be weighed according to different customer conditions, installation environment, load conditions and other conditions.

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