Compared with linear power supplies, switching power supply products have the following advantages:
1. In switching power supply products, the switching tube works in the switching state, the power loss is small, the efficiency can reach 80%-90%, and the good quality can reach 95% or even higher, while the efficiency of the linear power supply can generally only reach 50% or more. Therefore, the switching power supply products have the advantages of low power consumption and high efficiency compared with linear power supplies.
2. The switch tube of the switching power supply product works in a high frequency state, and only needs a small transformer to transmit a large amount of energy; the loss of the switch tube is small, so the radiator is also reduced or not used at all; the switching frequency is several Above 10 kHz, it is a thousand times that of a linear power supply, and the filtering efficiency after rectification is almost a thousand times higher, so the volume and volume of the filter inductor and capacitor are greatly reduced; at the same time, the allowable ambient temperature is also greatly improved, so switching power supply products have the advantages of small size and light weight for linear power supplies.

3. When the input voltage or load changes cause the output voltage to fluctuate, the switching power supply products can be adjusted adaptively by adjusting the pulse width, pulse frequency or both at the same time. In the case of large changes in the grid voltage, it can still ensure stable output. Voltage. Therefore, the voltage regulation effect of switching power supply products is better than that of linear power supplies and is suitable for a wide range of fields.
4. Switching power supply products have an obvious advantage over linear power supplies, that is, switching power supply products include self-excited and other-excited; there are width-modulated, frequency-modulated; isolated, non-isolated and so on.