How to choose the safety capacitor parameters in the power supply

        Capacitance parameter is also called capacitance. Capacitance is also called "capacitance". It refers to the amount of charge storage under a given potential difference, denoted as C, and the international unit is farad (F). Generally speaking, the electric charge moves under the force of the electric field. When there is a medium between the conductors, the charge movement is hindered and the charge accumulates on the conductor, resulting in the accumulation of charge. The amount of stored charge is called capacitance. Because capacitors are one of the most widely used electronic components in electronic equipment, they are widely used in dc blocking, coupling, bypass, filtering, tuning loops, energy conversion, control circuits, etc.

        With the rapid development of scientific and technological products, people’s living standards continue to improve, and a large number of electronic products enter the home. Because these devices have the risk of electric shock, fire, harmful radiation, chemical, explosion, and mechanical injury, in order to protect the lives and properties of users, To protect the interests of consumers and promote enterprises to improve product quality, the country has successively formulated safety standards for related products to reduce the above-mentioned risks to a small extent, and passed legislation to ensure the implementation of safety standards. The national certification agency recognized by the country recognizes the electronic products that have passed the relevant inspections and recognizes that these products meet the relevant safety standards.

        So when choosing safety capacitors, there are actually many people who still don't know the difference between high voltage ceramic capacitors and safety capacitors. Safety capacitors are capacitors that must pass safety certification, generally including X capacitors and Y capacitors. The main reason is the insulation level. High-voltage ceramic capacitors are ordinary ordinary capacitors, which do not require safety approval, so they cannot be used before rectification, nor can they be connected to the right insulation requirements..., then we will talk about the parameters of safety capacitors selected.

        The quality of the safety capacitor parameters in the switching power supply is generally the larger the capacity, the better. If the fixed frequency harmonics are removed, f=L/2π*C can be used to calculate. Capacitors are one of the most widely used electronic components in electronic equipment. They are widely used in direct current isolation, coupling, bypass, filtering, tuning loops, energy conversion, and control circuits. In fact, you can also use CE-certified switching power supplies (with the same power or close to each other) to measure the filter inductor parameters and safety capacitor parameters after disassembling.

        When choosing safety capacitors, you must find a professional and regular manufacturer. Such as production equipment; R & D strength; whether the safety certification is complete to ensure the quality of safety capacitors. Find a regular manufacturer of safety capacitors, complete safety capacitor models, complete parameters, and manufacturers can also reasonably assist.