Designing first order Butterworth low pass filter

Audioguru

Joined Dec 20, 2007
11,248
Your extremey fuzzy schematic is fuzzy because it is saved as a fuzzy JPG file type instead of as a very clear PNG file type. Also it is covered with chicken-pox dots.

The opamp has no positive power supply at its pin 7 and has no negative power supply at its pin 4 so it won't do anything.
 

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