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在开始具体论述EMC设计技术之前,先介绍一下在产品研发项目中,理想的EMC生命周期所涵盖的内容:制定新产品需满足的电磁规范,其内容包括:(1)产品需承受的电磁环境,包括连续、高概率与小概率的电磁骚扰。(2)骚扰出现时,产品性能所允许的降级程度。(3)产品与外围敏感设备可能的靠近程度,及其产生的可接受的干扰,由此得到产品的电磁发射规范。(4)确认是否有安全问题需要额外增加产品电磁规范的内容。与电磁干扰(EMI)相关的安全认证可以由安全指令与标准进行要求,而不是EMC指令与标准。
Before embarking on a specific EMC design technique, first introduce the ideal EMC life cycle covered in a product development project: develop new products to meet the electromagnetic specifications, which include: (1) the electromagnetic environment to be sustained by the product , Including continuous, high probability and small probability of electromagnetic disturbance. (2) The degree of degradation allowed by product performance when harassment occurs. (3) The possible proximity of the product to the peripheral sensitive equipment and the acceptable interference it generates, and the electromagnetic emission specification of the product is obtained. (4) to confirm whether there is a safety issue need to increase the electromagnetic content of the product specification. Safety approvals related to electromagnetic interference (EMI) can be required by safety directives and standards rather than EMC directives and standards.