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user 277629
A filter selectively processes input signals in frequency- or time-domain.
0
votes
Band pass filter with single-supply op-amp not filtering
Shape / level of filter response (comment/question on earlier answer)
I'll answer this with reference to LTspice simulation, which you can then apply to your built circuit. …
- 444
2
votes
Band pass filter with single-supply op-amp not filtering
Thanks for two updates: there is now sufficient clarity for me to suggest a wiring correction. The component identifiers below refer to the LTSpice schematic.
The output of the opamp should be connect …
- 444
1
vote
Accepted
What is a proper circuit for a variable low pass filter that can be controlled with a potent...
Have you considered a Sallen-Key low pass filter? … This circuit comes from the Okawa-Denshi website:-
There is a calculator for the filter at http://sim.okawa-denshi.jp/en/OPseikiLowkeisan.htm
I got some trial results with different pairs of resistor …
- 444