Digital circuit design the basic principles of interference is: (1) sources of interference suppression, interference sources, such as loop through the series inductance or resistance and 67 datasheet and increase the freewheeling diode to achieve. (2) cut off the interference propagation paths, interference propagation path can be divided into two types of conduction and 67 price and radiation. The so-called conduction disturbance is transmitted through the wires to the sensitive components of the interference. High-frequency noise and 67 suppliers and interference of different signal in the band, you can add filters on the way to the wire cut off the spread of high-frequency interference noise, and sometimes can be added to solve isolated optocoupler. The so-called radiation interference is spread through the space radiation inte...