Technical field

Hefei Mycoil Technology Co.,LTD(MCT) apply for utility model patent is about power filter.

Background technique

Currently on the market filter products usually use metal shell, such as stainless steel, iron-nickel alloy, iron -zinc and other materials. Metal shell, the use of metal shell can shield the principle of electromagnetic interference is widely used in electronic filter design. Although the use of such metal shell can shield some electromagnetic interference, but the volume of the product is very negative. At th same time, it has heavy weight. First, bring the design space trouble to user; Second, the impact of the product's transportation costs. In addition, the use of metal casing, insulation requirements in the higher occasions not obvious.

Metal shell is easy to short circuit, if the circuit board insulation in the shell is not good, will give users a great deal of safety hazards. If we use plastic shell toassembly structure, design height is not enough, is not conducive to the actual production and application of products.

Brief introduction

Mycoil apply for this utility model to overcome the existing technology and provide a power filter.

Many people think that the role of power filter is to make the equipment to meet the electromagnetic compatibility standards for conduction emission and conduction sensitivity requirements, In fact, power filters are also important in suppressing the generation of strong radiated emissions from equipment.

The principle of the utility model is animpedance mismatch network which belongs to a low-pass filter. It allows DC or 50Hz operating current through, but does not allow high frequency electromagnetic interference current through. It can prevent electromagnetic interference generated by itself from entering the power cable while preventing interference on the power cable from entering the device.