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3.5 Setting Up and Solving Circuit Equations 235
Possible values are:
Selector −> Selector["BJT", "Q2N2222", "Q1"]
Automatic
"string"
symbol
use value of option AnalysisMode as default model
selector for ExpandSubcircuits
use "string" as default model selector for
ExpandSubcircuits
use SymbolName[symbol] as default model selector for
ExpandSubcircuits
Values for the DefaultSelector option.
The standard setting DefaultSelector −> Automatic causes the default selector to be determined
from the value of the option AnalysisMode. This enables ExpandSubcircuits to load semiconductor
device models from the model library which are compatible with the current analysis mode.
DesignPoint
The DesignPoint option allows you to specify a set of numerical reference values for the circuit
parameters in a symbolic system of circuit equations. It allows the following values:
Automatic
extract design-point information from Value and Symbolic
specifications in the netlist
{symbol
−>value , symbol
−>value , † † † }
specify numerical values for symbolic circuit parameters
explicitly
Values for the DesignPoint option.
None
do not extract design-point information from the netlist
The design point is stored in the DAEObject returned by CircuitEquations. If available, designpoint
information is applied automatically whenever numerical calculations are performed with a
system of equations which has been set up with ElementValues −> Symbolic. The design point can
be extracted from the DAEObject with the function GetDesignPoint (Section 3.6.12).
ElementValues
With ElementValues −> value, you can decide whether CircuitEquations sets up a system of circuit
equations symbolically or numerically. Possible choices are: