Explain the term filter network.(2 marks)craft1 electrical June/July 2020
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A filter network is a circuit that is designed to allow certain frequencies of a signal to pass through while blocking or attenuating others. Filter networks are used to separate or isolate specific frequency components of a signal and can be used for a variety of purposes, such as to remove noise from a signal, to select a particular frequency band for processing, or to shape the frequency response of a system. Filter networks can be passive (consisting only of resistors, capacitors, and inductors) or active (using amplifiers or other active components in addition to passive components). There are many different types of filter networks, including low-pass filters, high-pass filters, band-pass filters, and band-stop filters, which are characterized by their frequency response and their ability to pass or block different frequencies.