Am Sa, 12.05.2007, 17:02, schrieb Alexandros K-K:
> the transient simulation works like a charm! thanks a bunch
> however the 741 thingy doesnt work, putting resistors doesnt change a
> replacing the uA741 with a "generic lossless" opamp from nonlinear
> components works, but it's not exactly what i need i guess
> the error message is like
> WARNING: DC1: DC analysis failed, using fallback #1 (source stepping)
> WARNING: DC1: DC analysis failed, using fallback #2 (gMin stepping)
> repeated a few times
> maybe uA741 model is wrong in some way?
Ok, I tried your simulation. The messages are warnings. So you can rely
on the results. Also they look good, even without a resistor in the
You use the "generic lossless" opamp if you want to. It depends on what
you want to achieve or learn...