Download - Wolfram Research

2.2 Netlists 41
1
CM
2
V0
RB
RL
IB
beta*IB
Figure 2.6: Result of incorrectly inserted current-controlled current source
The correct solution to this problem is to add another node to the circuit and connect the controlling
branch in series with RB as shown in Figure 2.7.
1
CM
2
V0
3
IB
RB
beta*IB
RL
Figure 2.7: CCCS circuit with correctly inserted controlling branch
We can then write a correct netlist as follows:
In[8]:= cccsCircuit =
Netlist[
{V0, {1, 0}, V0},
{RB, {1, 3}, RB},
{CM, {1, 2}, CM},
{CC1, {3, 0, 2, 0}, beta},
{RL, {2, 0}, RL}
]
Out[8]= NetlistRaw, 5
2.2.3 A Brief Preview on Circuit Analysis
There is much more to learn about netlists, but before going into the details let’s get an impression of
Analog Insydes’ basic symbolic circuit analysis functionality. Computing voltages and currents in a
circuit requires essentially two steps: Setting up a system of circuit equations and then solving these
equations. Circuit equations can be set up automatically by applying the function CircuitEquations
(Section 3.5.1) to a netlist description.
We set up equations for the voltage divider circuit defined in Section 2.2.1 (see Figure 2.1):