Rainer,
I'm using scad3 for a few weeks and I'm very happy
about the power and speed of simulation. Now, I
tried a more complex simualtion with
a LT1533 (I modified the sample) and got the
following error:
Analysis: Timestep too small; time=0.000173642,
timestep=1.25e-019:
trouble with node "n001"
What does that mean and how can I prevent this
error.
It means the solver failed to converge for the
circuit. Usually you have to change some aspect
of the circuit to get it to run right. The
1533 is pretty complicated since it controls
the slew rate of switching via local feedback
loops. If you can't get it to run, you can
e-mail the circuit to the address on the
help=>about box for help with it. Note today
is a holiday in the USA.
I tried to modify the .tran command to
use less steps, but this doesn't help.
You can't tell it to use fewer timesteps.
It solves for a maximum timestep. You
can only stipulate a smaller one. You might
try the keyword "startup" on the .tran
command since it looks like your having
trouble with the intial conditions of your
simulation.
--Mike
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Mike Engelhardt