Phase-shift oscillator - op-amp implementation

Thread Starter

Gennaro Arguzzi

Joined Apr 5, 2016
9
Hi everyone, could you help me to understand why in the phase-shift oscillator with inverting amplifier there isn't the resistor after the third capacitor in first figure?

upload_2016-11-13_17-53-49.png



Thank you very much in advance.
 
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