Features of the quality power supply adapter:
1. Small size and light weight.
The quality power supply adapter does not use a bulky power frequency transformer. Since the dissipated power on the switch MOS tube is greatly reduced, a larger heat sink is omitted. Due to these two reasons, the quality power supply adapter is small in size and light in weight.
2. Low power consumption and high efficiency.
In the quality power supply adapter circuit, under the excitation of the excitation signal, the switching MOS tube alternately works in the switching state of on-off and off-on. The conversion speed is very fast, and the frequency is generally above 50kHz. In some advanced switching power supplies In the line, it can be done in hundreds or near megaHz. This makes the power consumption of the switch MOS tube very small, and the efficiency of the power supply can be greatly improved, and its efficiency can reach 90%.

3. The efficiency of filtering is greatly improved, which greatly reduces the capacity and volume of the filtering capacitor.
The working frequency of the quality power supply adapter is basically above 50kHz, which is more than 1,000 times that of the linear regulated power supply adapter, which makes the filtering efficiency after rectification almost 1,000 times higher. Also increased by 500 times. Under the same ripple output voltage, when the switching power supply is used, the capacity of the filter capacitor is only 1/500 ~ 1/1000 of the filter capacitor in the linear regulated power supply.
4. Wide range of voltage regulation.
The output voltage of the quality power supply adapter is regulated by the duty cycle of the excitation signal, and the variation of the input signal voltage can be compensated by frequency modulation or width modulation. In this way, when the power frequency grid voltage changes greatly, it can still ensure a relatively stable output voltage. Therefore, the voltage regulation range of the quality power supply adapter is very wide, and the voltage regulation effect is very good.