The relatively common situation for domestic electronic and electrical products is: product design has been stereotyped, during the EMC type tests, product shell have molded, the design and production of PCB Board have started, the component boards have been processed, even the production has been fulfilled and waiting for shipment release.
For these existed EMC issues of such products, we can only take the measures of “what the problem is, solve the problem, so as to reach the electromagnetic compatibility requirements with the smallest changes to the products. This belongs to the EMC Countermeasure Category; this is the issue we need to discuss in this course.
For the common EMC problems, by taking the following corrective measures, most problems can generally be solved.Conductive adhesive can be coated on the mating face of the shielded objects, or add the conductive gasket to the mating face, even use the conductive metal tape for remediation.
Conductive gaskets can be the woven metal wire, soft metals which has lower hardness and it is easy to model, the rubber of packaging metal layer, conductive rubber or the reed comb shaped and contact-finger objects.