Design And Practice Of Power Ripple Filtering Method

Power supply ripple has many hazards,which can cause accidents caused by overcurrent of the power grid,increase losses,cause problems in operation of electrical equipment,and interfere with signal transmission.The filtering of all power supply ripples is a very interesting topic.Ripple resolution seems to be very difficult,but if we only control the ripple within a range acceptable to a device,it becomes easier to implement.This design is mainly for the current research of new methods of power supply ripple filtering.There are three main current mainstream filtering methods: capacitive filtering,LC filtering,common mode filtering,capacitive filtering and LC filtering.Poorly good,common mode filtering,although the filtering effect is good,but the volume is too large,can not meet the needs of the current topic,this design is mainly to design a new power ripple filtering method,can do a good job of power supply ripple A more stable filtering effect,and can simplify the filter circuit,increasing the wide range of usable.At the same time,we must also reduce production costs,and strive to achieve mass production.This paper analyzes,compares and tests various filtering methods in detail.The advantages are improved,and the shortcomings are improved.After a step-by-step improvement,a hybrid regulator circuit consisting of a linear regulator circuit,an LC filter circuit,and a capacitor and a resistor is designed to meet the requirements of the subject.