Switched-mode power supplies directly rectify and filter the grid voltage, then stabilize it through a switching regulator. Therefore, transformers are not required. Aviation Power
2. Switched-mode power supplies typically use power semiconductor devices as switches, adjusting the output voltage by controlling the duty cycle of the switches. Taking the power transistor (GTR) as an example, when the switch is in saturation and conducts, the voltage drop across the collector and emitter is nearly zero. When the switch is turned off, the collector current is zero, resulting in low power consumption and high efficiency. Efficiency can reach as high as 70% to 95%. With lower power consumption, the heat sink can also be reduced in size.
3. The switching frequency of the switch is in the tens of kilohertz, and the capacitance values of the filtering capacitors and inductors used are relatively small. Consequently, the switching power supply features lightweight and compact design.
4. Due to its low power consumption and low internal temperature rise, the overall stability and reliability of the machine are enhanced. 400HZ power supply
