What is the difference between positive-peak positive-level clipper, positive-peak negative-level clipper, negative-peak, positive-level clipper, and negative-peak, negative-level clipper???
Can anyone show me graphically? Thanks a lot ^^.

 

http://www2.tech.purdue.edu/ecet/courses/eet157/Lab/updated/Lab%20Exercise%2019.pdf

That link has the exercises you can do with your circuit simulation program so you can do your own graphing.