Donald McKay (1810 to 1880) was a designer and builder of
American sailing ships. His clipper ships were popular due to the
records made with the ships he build.
View page
clipper circuit is used to remove some part of wave
form(positive part,negative part or peak)...
clamper circuit is used to shift the wave form (up or down)
....
View page
Positive clipper-the clipperwhich removes the positive half cycles of the input voltage, while the negative clipper the clipper which removes the negative half cycles of the input voltage.