<div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div class="gmail_quote"><div dir="ltr">On Mon, 19 Nov 2018 at 11:39, <<a href="mailto:rburnett@richieburnett.co.uk">rburnett@richieburnett.co.uk</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">> <br>> <a href="http://sim.okawa-denshi.jp/en/Sallen3tool.php" rel="noreferrer" target="_blank">http://sim.okawa-denshi.jp/en/Sallen3tool.php</a><br> <br>
I love that website, BTW. It's great for designing anti-aliasing <br>
filters for audio and data acquisition type applications. I'm <br>
particularly fond of the MFB low-pass filter because of it's superior <br>
stop-band performance compared to the more well-known Sallen-Key <br>
arrangement. It's also easy to dial in a bit of gain, which can be very <br>
useful in some occasions.<br></blockquote><div><br></div><div>I agree, it's a very useful site that I often use!</div><div><br></div><div>Almost as useful is</div><div><a href="https://www.beis.de/Elektronik/Filter/ActiveLPFilter.html">https://www.beis.de/Elektronik/Filter/ActiveLPFilter.html</a></div><div>which I also recommend. Both have their uses.</div><div><br></div><div>I do feel more than a bit sorry for the site owner though, Uwe Beis. His name is pronounced just like "bajs", which is the most common Swedish word for poo. The title of the whole site <a href="http://www.beis.de">www.beis.de</a> reads "Welcome to the homepage of family Poo." :'-/</div><div><br></div><div>/mr</div></div></div></div></div></div>