Hi all,
I want to design a passive 3rd or 5th order lowpass filter with an fc of
500Hz or 1kHz, preferably a Butterworth configuration for a flat bandpass response. So I dusted off ye 'ole filter design theory, set out to calculate polynomials ... and realized that I somehow miss the connecting step to real-world components -- at least, as far as the LCLR ladder configuration is concerned:L1 L2 L3 .--mmm---mmm---mmm--. | | | | Ri| | C1=== C2=== | | Ro | | | | | | | | | | `-------------------'
I know how to calculate active filters in a Sallen-Key configuration, and I looked up things like
Can anyone enlighten me in this respect? For active filters, there are some quite good step-by-step explanations out there (e.g.
Thanks already,
Richard Rasker