On Jul 10, 2009, at 7:15 AM, aerogramma wrote: > would i be doing something horrible in replacing a LM741 with a > U741CN or a TL072CN? It depends on the circuit. Some saw->tri waveshaper circuits rely on the crappy slew rate of the 741 to mask the switching glitch. - C Chris Muir cbm at well.com http://www.xfade.com