电子产品接触电流解析

Touch Current Analysis of Electronic Products

电子产品对地接触电流的实质,是抑制EMI干扰的Y电容泄放电荷,经由人体流向大地的电流。Y电容容量直接决定接触电流大小。如何合理有效地测量接触电流并判定电能量源等级,是电子产品安全设计的必要环节。

The essence of the touch current of electronic products to the ground is the current that flows to the earth through the human body by releasing charge from the Y capacitor that inhibits EMI interference.Y capacitance directly determines the size of the contact current.How to measure the contact current reasonably and effectively and determine the grade of electrical energy source is a necessary step in the safety design of electronic products.