On Sun, Apr 6, 2025 at 01:19 PM, Christopher Paul wrote:
I am still getting the following error messages when I run your file.:
?
u1:_u1_u12:dd1: Emission coefficient, N=4.83179e-313, too small, limited to 0.1
u1:_u1_u11:dd1: Emission coefficient, N=4.83179e-313, too small, limited to 0.1
u2:_u1_u12:dd1: Emission coefficient, N=4.83179e-313, too small, limited to 0.1
u2:_u1_u11:dd1: Emission coefficient, N=4.83179e-313, too small, limited to 0.1
Direct Newton iteration for .op point succeeded.
To clarify --
?
Not one of those is an error message.
?
The first four are status messages saying that the diode's N coefficient value was limited by LTspice.? The fifth line is a status message saying that one of LTspice's simulation phases succeeded.? There was no error - though some might say that the first four suggest that something was wrong with the original model.? That point could be debated.
?
If you downgrade to a suitably old LTspice version (perhaps v17.0.* or older), those four warnings about the Emission Coefficient would go away, and LTspice would use the incredibly small value for N.? Would it make a difference?? I have no idea.
?
Andy
?
