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Hello guys, long time since my last post. I'm here asking for some help to understand how to get sine, square, sawtooth and reverse sawtooth out of a basic cmos lfo. My understanding so far is that putting a capacitor to ground can make the lfo a sine wave (I guess since I'm adding a low pass filter somehow) and I saw on an ugly face vero board where the output of the oscillator had 2 diodes put to ground to get a sawtooth and reverse sawtooth shape (once again I'm guessing it's some kind of "hard clipping"). My issue is that I don't fully understand if these methods are strictly related to how the lfo is generated (via opamp) or it's something "universal" applicable to every lfo (even one generated by a CD40106). Hope it was clear enough.
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