Technical data
50
ombination Circuits
urrent in Series-Parallel Circuits
roject Objective:
To better understand the characteristics of current flow in series-parallel combination circuits by
combining both the series and parallel circuit analysis methods previously learned in the course.
ems Needed:
- Electronics Trainer - Digital multi-meter
- Jumper Wires - Resistors: 1k, 3.3k, 4 - 10k, 2 - 47k, 100k
ake sure power supply is off when connecting meters or changing circuit components.
xperiment
C
C
P
It
M
E
1. Connect the circuit as shown in Figure 22-1.
2. Connect the ammeter to read I and apply just enough
T
voltage to have a total circuit current of 600µA.
Measure all of the voltage drops and the current
through each com
ponent. Record your results below.
____________________.
_____________
____________________
.
________________________ I
3
= ________________________.
________________________.
I
5
= ________________________.
________________________.
I
7
= ________________________.
ent flowing through them?
________________
rtion of the circuit after it has been simplified?
ts, the current flow through a given component
d the
d in
_
arallel portions of the circuit.
V
A
= ________________________.
V
1
= ____
_________ __V
2
= .
V
3
= ________________________.
V
4
= ____
V
5
= .
V
6
= ________________________. I
4
=
V
7
= ________________________.
I
1
= _________________________. I
6
=
I
2
= _________________________.
Which components have the total circuit curr
What is the resistance of only the parallel po
__________________________
It should be noted that in series-parallel circui
depends on where the component is locate in circuit. The series “portion” of the circuit
can be solved by using the same rules as use _____________________ circuits, and
the parallel “portion” can be solved by using the rules for ______________________
circuits. The circuit can then be finalized by combining the results of both the series and the
p
mA
R
1
1k
V
A
−
+
Figure 22-1
R
1
4
R
2
R
3
100k
47k
R
5
10k
R
7
0k
R
6
10k
10k