Download Part 1: DC Analysis

The answers we get, {vs*µ/(µ+1),ro/(µ+1)}, are correct, as can be seen by comparing
them to those in the book:
I am not sure there is any other circuit simulator for calculators that can do this.
RL Problems
th saves the
current, voltage
drop and power
in a load as a
function of load
value L in
variables irL,
vrL and prL,
respectively.
One type of problems that books and professors like to present to students when
teaching the Thévenin / Norton equivalents is what I like to call RL problems. A typical
RL problem statement goes like this: "First, reduce the circuit, as seen by resistor RL, to
its Thévenin or Norton equivalent. Then, find the value of the voltage drop, current
and/or power consumed in the load resistor RL if its value is (whatever) ohms." Since
this is such a typical problem, Symbulator helps you solve them. Right after a Thévenin
or Norton equivalent is found, Symbulator will store a series of variables related to a
RL connected among the equivalent's terminals: its current is stored in irL, its voltage
drop in vrL, and its consumed power in prL, all in function of the value of the load, L.
These are good as long as the load is the only thing connected to the equivalent.
B11's Example 9.6
Find the Thévenin equivalent circuit for the network in the shaded area. Then find the
current through RL for RL values of 2Ω, 10Ω and 100Ω.
My answer below. First we find the Thévenin equivalent.
s \t h( "e 1 ,1 ,0 , 9 :r 1, 1, 2 ,3 : r 2, 2, 0 ,6 " ,2 , 0) :{ v th ,r eq }
The answer, {6,2} , is correct. Now we find the values of irL for the different values.
{ir L |L = 2 ., ir L |L = 1 0. , ir L |L =1 0 0.}
Where | is the "given" operator. The answers, {1.5,.5,.059}, are correct.
AS2's Example 4.8
Find the Thévenin equivalent of the circuit shown to the left of terminals a-b. Then
find the current through RL = 6, 16 and 36Ω.
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