滤波器

Browse through the site and find offers for wholesale filters and other components. The electronic noise filter consists of circuits capable of amplifying or attenuating certain frequencies. This way, the filter effectively controls unwanted frequencies. Not only that, but it can enhance other frequencies for better performance. There are many types of classifications for filters . One of these classifies them under the passive and active categories. The passive ones don't depend on an external power supply. They also only contain passive components, such as capacitors, resistors, and inductors. The different combination of these components makes the different types of passive filters. The passive RC filter, a circuit combining a capacitor and a resistor, and the passive LC filter, a combination between an inductor and a capacitor, are some of the most common types. The active filters need an external power supply and have active components, like transistors, inside them. Other classifications of filters focus on the effect they have on input frequencies. A passive high pass filter only allows frequencies over a certain cutoff point to pass. The low pass passive filter does the opposite, only allowing frequencies under a certain cutoff point to pass. The passive band pass filter passes only frequencies within a certain range. The passive band stop filter, on the other hand, leaves most frequencies unaltered. The band stop filters, like the passive notch filter, have very narrow stopbands, which allow most frequencies to pass. On Tradechina.com, you can contact international suppliers for wholesale filters , and much more. Browse the offers, check the specifications, and choose an international supplier to stock up your business.