Ron H said:
A differentiator and a window comparator would allow you to bracket slew rates. The output of the comparator would be high (or low, if you choose) only when the slew rate is between selected limits. I'm not sure what you do with the output - probably control a filter's cutoff frequency. I think Russlk was on this track in the other thread. Why do we have two threads going here?
RonH, can you be more specific about the usage of the differentiator in conjuction to the window comparator?I did not quite get HOW the comparator is high or low depending on the slew rate.
Also, I would not want to deal at all with frequency, just rate of change.
That is why the "slope limiter" circuit I showed you in the link
https://www.electro-tech-online.com/threads/opamps-from-everyone-from-ti.16993/
was soo good..Cause it dealt with rate of change and not frequency.
Bottom line, all I want is fast parts signals to pass through and slow parts to become smoother.
Is there an addition to the "pulse extractor1.gif" you can suggest that can do that?That's all I want.
Thanx for your help,
xmat.