> I think the bump is a resonance from output capacitor and transformer inductance.
Well, no; because the sim was run with no transformer.
Three C-R coupling networks, plus Gain, makes a Phase Shift Oscillator. Here the C-Rs are staggered, and the gain is not large, so it won't-quite oscillate. But it thumps (average DC level bobbles) badly when signal starts abruptly. Which is rather standard in plucled/picked bass playing. So it needs study.
Well, no; because the sim was run with no transformer.
Three C-R coupling networks, plus Gain, makes a Phase Shift Oscillator. Here the C-Rs are staggered, and the gain is not large, so it won't-quite oscillate. But it thumps (average DC level bobbles) badly when signal starts abruptly. Which is rather standard in plucled/picked bass playing. So it needs study.
This is the main objective for me at the begining. For that I though as an option the two DC coupled Cathode follower...
But now,.. It seems that it will not work very well..
So,.. I'm starting to inspecto the other squems better that you posted.
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