Switching power supply and ordinary power supply compared to what advantages
Advantages: (with power ratio between)
small volume
Power is large
efficient
flexible
Switching power supply efficiency is high, heat loss low!
In the past, we used most of the linear power supply, it brought a heavy transformer;
Today, switching power supply, even the mobile phone charger are switching power supply.
Advantages of switching power supply:
1. Small size, lighter weight (volume and weight only 20 to 30% of linear power supply);
2. Conversion efficiency is high, more power (switching power supply efficiency is generally higher than 70%, while the linear power supply only 30 ~ 40%);
3. Its own strong anti-interference, wide voltage range.
Of course, compared with the linear power supply, switching power supply also has shortcomings,
For example, the output ripple; due to switch mode work, there is a large electromagnetic interference.
