gooliver said:
what's the method in object?
I know the nodal potential method for a electrical
network linear time-invariant... but I've read than
the nodal potential modified method is the method which
SPICE use for the solution...
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thanks for suggestions
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Nodal vs loop solutions generally mean fewer equations to solve. In
addition, it is relatively easy to input circuit data from a table and the
process is well suited to a standard algorithm to build the admittance
matrix. (loop analysis requires making choices -not so good for the idiot
box and not standardised for every circuit).
As long as the circuit is linear- no problem. If non-linear, then it becomes
a step by step situation- solve a linear model, modify for non-linearities
and repeat until, hopefully, convergence occurs.
I've not used SPICE but I expect that the above are the basic reasons for
its use.
I do know that nodal analysis is the standard for power system load flows
and stability studies which are larger than anything that SPICE would be
expected to handle (often several thousand non-linear simultaneous
equations for the load flow and for stability, this is done at each step of
the solution of a large set of non-linear differential equations)