May 4, 2010 #1 T time_search Junior Member level 3 Joined Feb 22, 2010 Messages 25 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Location jordan Activity points 1,454 i applied spwm on my 3-level d.c.i. but the pulses on the load appear to be uniform? why?...