Hi
There I have created a phase shift oscillator that I am very happy with as I have removed distortion using amplitude gain control via a JFet but would like to reduce distortion even further using "Feedforward", I saw this technique being used in the article I am attaching with this message entitled: "Important to the distortion removal", what I have so far is also posted in the form of an LTSpice file and screenshot. I would like to implement this topology into my circuit but have not been successful I have found the oscillations to then decay after implementing the summing amplifier. I would also like to change the amplitude of the sine wave I would like it to oscillate between 1v and 3v it currently oscillates about the reference 2v but should I just use a non-inverting amplifier to increase the amplitude of the oscillations? Any help would be much appreciated
Thanks Art
There I have created a phase shift oscillator that I am very happy with as I have removed distortion using amplitude gain control via a JFet but would like to reduce distortion even further using "Feedforward", I saw this technique being used in the article I am attaching with this message entitled: "Important to the distortion removal", what I have so far is also posted in the form of an LTSpice file and screenshot. I would like to implement this topology into my circuit but have not been successful I have found the oscillations to then decay after implementing the summing amplifier. I would also like to change the amplitude of the sine wave I would like it to oscillate between 1v and 3v it currently oscillates about the reference 2v but should I just use a non-inverting amplifier to increase the amplitude of the oscillations? Any help would be much appreciated
Thanks Art
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