Shenmao Capacitors specialized in aluminum electrolytic capacitors from 1970

Application of Metal Film Capacitors and Active Filters|Focus on mid-to-high-end brand capacitor manufacturers

by:Shenmao     2021-04-06
The metal film capacitors and electrolytic capacitors used in filtering are familiar with each other, and there are disputes. However, there is no difference between the two. In fact, the applications of the two are different. The performance of metal film capacitors is high. Analytical power, clear layers, fast speed, low noise, but the sound is a little too thin, the low frequency is poor, lacks the charm, and it is very comprehensive and very expensive. Metal film capacitors have a negative effect due to their fast speed and poor use. Everyone knows that there is no negative feedback circuit at high frequencies, and the low frequency is not as good as the feedback circuit. At this time, metal film capacitors are used for filtering. In most cases, the high and intermediate frequencies will be more Bright, the low frequency is hard, so some students object to the use of metal film capacitors for filtering, but it is different when there is feedback. The speed advantage of metal film capacitors is played out. The high speed of metal film capacitors Transient intermodulation distortion plays a certain complementary role, and also makes the sound sound fresher and smoother. This has achieved good results in practice. The speed advantage of metal film capacitors is more obvious and commendable when the voltage regulator circuit eliminates the switching effect. Everyone has been arguing over the pros and cons of AC power supply, DC power supply and voltage stabilization. Although AC has peaks and valleys, it is still continuous. There is no switching effect and no switching noise. The sound of DC power supply does not have AC power supply. Sounds beautiful, the main performance is that the sound is not fresh. Have you ever considered what is not fresh? In fact, the sound is not smooth, which is caused by the switching noise of the voltage regulator device. In fact, the switching characteristics of the current components are already very good, and the switching frequency has reached the MHZ level. In theory, it will basically not cause a large amount of audio. influences. If you want to know more, please call the toll free hotline 4006299138. Electrolytic capacitors are already noisy and slow. They are used in rectification and voltage stabilization circuits. The switching noise of diodes and voltage regulator tubes is superimposed. The effect can be imagined, but it is changed to metal. After the film capacitor, the situation is different. It has been well verified in the application of the active filter circuit. After using the metal film capacitor of equal capacity, the sound sense is quite good. There is no phenomenon of turbulence or freshness. I believe that the metal film capacitor is fast Charging and discharging make up for the effect of switching noise.
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