Technical data

52
Combination Circuits
Volt
Projec
•
•
Items
- El
- Ju
Make s
xpe
age in Series-Parallel Circuits
Objective: t
To better understand the characteristics of voltage distribution in a series-parallel circuit by
taking measurements and making observations.
To verify that a component’s voltage drop is affected by that component’s value and location in
a series-parallel circuit.
Needed:
ctronics Trainer - Digital multi-meter e
mper Wires - Resistors: 1k, 3 - 10k, 18k
ure power supply is off when connecting meters or changing circuit components.
E riment
1. Connect the circuit as shown in Figure 23-1.
2. Assume there is a total current of 700µA. Calculate
all of the circuit voltages and record the results below
.
.
.
____________.
V
1
= ________________________
____________________
_____________
s? ____________
µA of total circuit current. Measure all of the
4
= ________________________.
2 5
________________________.
V
A
= ________________________.
ns in step 2?
________________________
ge drop? ________________ Why or why not?
__________________________________
__________________________________
___________________________
___________________________
V
2
= ________________________.
V
3
= ________________________.
V
4
= ____
V = _________ __.
5
What would the applied voltage need to be to obtain
these result
3. Apply the correct amount of voltage to obtain 700
circuit voltages and record the results below.
V
1
= ________________________. V
= ________________________. V =V
3
= ________________________. V
id the measurements confirm the calculatioD
Did the largest resistor have the largest volta
______________________________
______________________________
_____________________________________
Which components does I
T
pass through? ________
The combined resistance of the parallel section can be considered to be in series with the
mA
R
2
3
10k
R
5
18k
R
4
10k
V
A
+
R
R
−
10k
1
1k
Figure 23-1