How to choose the safety capacitor parameters in the power supply

Capacitance parameters are also called capacitance. Capacitance is also called "capacity". It refers to the amount of charge stored at a given potential difference, denoted as C, and the international unit is farad (F). Generally, the electric charge moves in the electric field. When there is a medium between the conductors, the electric charge is hindered and the electric charge accumulates on the conductor, causing the accumulated storage of the electric charge. The stored electric charge amount is called a capacitance. Since capacitors are one of the most widely used electronic components in electronic devices, they are widely used in blocking, coupling, bypassing, filtering, tuning loops, energy conversion, and control circuits.

With the rapid development of technology products, people's living standards continue to improve, and electronic products enter the home in large numbers. Because of the dangers of electric shock, fire, harmful radiation, chemical, explosion and mechanical injury, in order to protect the safety of life and property of users, To safeguard the interests of consumers and promote the improvement of product quality, the state has successively formulated safety standards for products, minimized the above-mentioned risks, and passed legislation to ensure the implementation of safety standards. The national accreditation body accredited by the state recognizes the electronic products that pass the relevant inspection and recognizes that these products meet the relevant safety standards.

Then, when choosing a safety capacitor, there are actually many people who are still confused about the difference between high-voltage ceramic capacitors and safety capacitors. Safety capacitors are capacitors that pass safety regulations, and generally include X capacitors and Y capacitors. Mainly there are insulation grade considerations. High-voltage ceramic capacitors are common general capacitors, which do not require safety approval. Therefore, they cannot be used before rectification, nor can they be connected to the right insulation requirements. Then, what are the parameters of safety capacitors? selected.

The quality of the safety capacitor parameter in the switching power supply is generally as large as possible. If the fixed frequency harmonic is removed, it can be calculated by f=L/2π*C. Capacitance is one of the most widely used electronic components in electronic devices. It is widely used in blocking, coupling, bypassing, filtering, tuning loops, energy conversion, and control circuits. In fact, you can also refer to the CE-certified switching power supply (the same or close to the power) to measure the parameters of the filter inductor and the safety capacitor parameters.

When choosing a safety capacitor, be sure to find a professional manufacturer. For example, production equipment; research and development strength; safety certification is complete, to ensure the quality assurance of safety capacitors. Find a regular safety capacitor manufacturer, the safety capacitor model is complete, the parameter information is complete, the manufacturer can also provide reasonable assistance.