Sorry for all the posts but this will be the last one and then if I have any more questions I'll wait and group them together.
I'm curious, again, as to if there is any way to make a diode's knee smoother. I know that one can use an opamp to make an active diode but I'm sorta interested in the opposite effect.
Thanks, Jon
Add a resistor in series with it.
You beat me to it !
Graham
I might also add that in the "clipper" schematic you linked to, the diodes cannot clip to zero incremental gain, because they are connected in the feedback path of a non inverting opamp configuration. The gain in that configuration is 1 + the feedback ratio, so even if the diodes go to zero dynamic resistance, the opamp continues to have a gain of 1 for the input signal.
I think that is the point though? You don't want them to clip all the time. As you turn up the gain they will clip more(and more of the highs than lows).
Also, if there they could clip all the time then you would have no signal?
Thanks, Jon
I agree that the effect I described is another way to soften the clipping effect of the diodes. If the opamp with the diode feedback were connected as an inverting stage, the clipping would be harsher.
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