Filter is a filter circuit consisted of capacitance, inductance and resistance. The filter can effectively filter out the frequency points of a specific frequency or frequencies outside the frequency point in the power line, and obtain a power signal of a specific frequency, or eliminate the power signal. Filtering exerts a critical impact in signal processing. The function of filtering circuit in DC regulated power supply is to reduce the AC component of pulsating DC voltage as much as possible and to retain its DC component, reducing the ripple coefficient of output voltage, and making the waveform smoother.
Filters are divided into two kinds of analog filter and digital filter in terms of the processed signal According to the frequency band of the signal through the passive filter, filters are divided into low-pass, high-pass, band-pass, band-stop and all-pass filter. WINSOURCE’s main products of filters contains ceramic filters, EMI/RFI filters, RF filters, SAW filters and helical filters.