filters_diodes

filters_diodes - EE 305 Lecture Part2 Active Filters !...

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Unformatted text preview: EE 305 Lecture Part2 Active Filters ! Learning Objectives ! Be able to analyze simple active filters ! Be able to identify lowpass, highpass, bandpass, and bandstop Active Filters. ! Be able to find characteristic frequencies, like cutoff frequencies. ! Know about integrator and differentiator circuits Examples for Filters ! radio receiver ! TV receiver ! hearing aid ! baby monitor A filter is a circuit that is designed to pass signals with desired frequencies and reject or attenuate others. Active versa Passive A filter is a passive filter if it consists of only passive elements R, L, and C . ! Does only filtering A filter is an active filter if it consists of active elements (op amps or transistors) in addition to the passive elements R, L, and C. ! filtering and amplification Transfer Function Transfer Function = Frequency Response The transfer function H(j " ) of a circuit is the frequency dependent ratio of a phasor output Y(j " ) (an element voltage or current) to a phasor input X(j...
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filters_diodes - EE 305 Lecture Part2 Active Filters !...

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