What are the main components of the switching power supply?
In which the transformer part has an auxiliary winding through the IC current voltage sampling to control the duty cycle of the switch to adjust the output current.
This is just one of the program switching power supply as a whole is the filter rectification adjustment feedback control output rectifier filter several parts. Specific programs according to specific requirements
The main component of the switching power supply is the electronic switch (FET or transistor). First, the input must be protected (fuse) filter (capacitor) in the rectifier (rectifier bridge) and then need DC / AC conversion (transformer) rectified output (rectifier diode) and then filtered (inductive capacitance) and finally a stable output.