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3.6 Circuit and DAEObject Manipulation 273
inserts the numerical value of the model parameter AREA for each instance except for the instance Q1
for which the parameter is kept symbolic.
The default setting is KeepSymbolic −> {}, which means not to filter the parameters to be inserted
numerically.
Examples
Load Analog Insydes.
In[1]:= 2. Sin[10^6 Time]},
{R1, {2, 0}, Symbolic −> R1, Value −> 100.},
{C1, {2, 0}, Symbolic −> C1, Value −> 1.*^−7},
{D1, {1 −> A, 2 −> C},
Model −> "Diode", Selector −> "Spice"}
]
]
Out[2]= Circuit
Set up DAE system.
Show DAE system.
Insert numerical values for
all parameters except
AREA$D1.
In[3]:= dae = CircuitEquations[cir, AnalysisMode −> Transient,
ElementValues −> Symbolic]
Out[3]= DAETransient, 4 4
In[4]:= DisplayForm[dae]
Out[4]//DisplayForm=
I$AC$D1t I$V0t ⩵⩵ 0, I$AC$D1t
V$2t C1 V$2 ′ t ⩵⩵ 0,
R1
V$1t ⩵⩵ V0, I$AC$D1t ⩵⩵ AREA$D1
1
1. $q V$1tV$2t
TEMP
$k
IS$D1
TEMP 3.
TNOM
TEMP
1.11 1.
TNOM
$q
TEMP $k
GMIN V$1t V$2t,
V$1t, V$2t, I$V0t, I$AC$D1t, DesignPoint
V0 2. Sin1000000 t, R1 100., C1 1. 10 7 , AREA$D1 1.,
BV$D1 ∞, GLEAK$D1 0, GLEAKSW$D1 0, GMIN 1. 10 12 ,
IBV$D1 0.001, IS$D1 1. 10 14 , ISW$D1 0, PERIM$D1 0,
RS$D1 0, TEMP 300.15, TNOM 300.15, $k 1.38062 10 23 ,
$q 1.60219 10 19 , CD$D1 0, CJO$D1 0, CJSW$D1 0
In[5]:= daenew = ApplyDesignPoint[dae, "*",
KeepSymbolic −> {AREA$D1}]
Out[5]= DAETransient, 4 4