The ceramic filters are made of lead zirconate titanate ceramic material, which is made into sheets, coated with silver on both sides as electrodes, and has a piezoelectric effect after DC high voltage polarization. The filter has the characteristics of stability and good anti-interference performance, so it is widely used in television, video recorder, radio and other electronic products as frequency selection components. It has the advantages of stable performance, no adjustment and low price, which replaces the traditional LC filter network.
