[sdiy] Hand selecting capacitors

Bernard Arthur Hutchins, Jr bah13 at cornell.edu
Sat Apr 10 03:26:13 CEST 2021


Oren Leavitt said Fri Apr 9 17:17:01 CEST 2021

“Would it be easier to take, say 4 1.03uF caps and nudge any frequency
determining resistors up/down as needed?”

Indeed – TRUE – see my frequently referenced, (even just in January):

“Design of Wideband Analog 90° Phase Differencing Networks Without a Large Spread of Capacitor Values”; http://electronotes.netfirms.com/EN168-90degreePDN.PDF

Using this state-variable approach (outside in), you can use a handful of 1% caps (ALL the SAME value) and trim the poles with the resistors.
-Bernie

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20210410/7e0275ef/attachment.htm>


More information about the Synth-diy mailing list