Is the waveform that you posted for the gate accurate? It should be the same signal as you have on the LM211 but shifted up to the rail.
Do you have a different waveform on the negative drive (move the cap or install one there.
Are you taking the signal from the leg of the 1000pf capacitor?
Do you have a different waveform on the negative drive (move the cap or install one there.
Are you taking the signal from the leg of the 1000pf capacitor?
There is too much noise to tell much.
I don't see how it's showing that you are driving above or below the rails. Don't you read 0 ohms between the collectors of the driver transistors (Q6 and Q9) on the driver board and the rail (source leg of outputs).
Do you have another scope?
If you ground the scope to the negative speaker terminal and probe the output source legs (normal mode, 20v/div), do you see a clean straight trace?
Do you get a clean straight trace if you touch the probe to the negative speaker terminal when the scope is grounded to that terminal?
I don't see how it's showing that you are driving above or below the rails. Don't you read 0 ohms between the collectors of the driver transistors (Q6 and Q9) on the driver board and the rail (source leg of outputs).
Do you have another scope?
If you ground the scope to the negative speaker terminal and probe the output source legs (normal mode, 20v/div), do you see a clean straight trace?
Do you get a clean straight trace if you touch the probe to the negative speaker terminal when the scope is grounded to that terminal?
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