With the converter characteristics,this text analyzed possible electrical interference forms of frequency control system in practical use,including external environment interference of converter,converter work interference on other equipment,etc.

The paper analyzes main reason of a general-purpose frequency inverter because the inverter itself and its peripheral equipment cause electrical interference.

In view of many working equipment and far remote control in the fieldbus control system(FCS),this paper analyzes the electric interference form in practice in order to inhibit the interference,and gives anti-interference measure which have greater practical value.

The basic concept of electromagnetic compatibility and several common measures of anti-electromagnetic disturbance techniques in GCS were introduced.

Study on anti-electromagnetic interference techniques of pressure transducer;

In this paper,the methods used to improve anti-electromagnetic interference ability was introduced,especially focus on the power supply system,signal transmission,PCB subarea layout,and PCB connection layout.

For Co_2Z hexaferrite has excellent soft magnetic characteristics such as high initial permeability,high cut-off frequency,low tagent and high themalstablity,it is a soft magnetic ferrite has the potential applications in the fields of anti-electromagnetic interference(EMI).