Download ENG 220 LAB -2

Lab # 2 ENG 220-001
Name:
Date:
AC measurement
Introduction to the Oscilloscope
ENG 220 LAB -2
Objective:
At the completion of this experiment, you will be able to:
Operate an oscilloscope and DMM.
Use an oscilloscope to measure DC and AC voltage and convert the AC measurement to Vpeak and Vrms.
1.
Construct the circuit. Calculate the DC IR drop for each resistor. Then measure using the DMM and
record the DC IR drop for each resistor.
Calculated:
V2.2k=
KVL
V4.7k=
V10k=
V4.7k=
V10k=
VT= V2.2 + V4.7 + V10
Measured:
V2.2k=
KVL
VT= V2.2 + V4.7 + V10
2.
Using an Oscilloscope measure and record the DC IR drop for each resistor.
V2.2=
KVL
V4.7=
V10=
VT= V2.2 + V4.7 + V10
Which instrument gives you better measurements? (Explain)
3.
Construct the circuit. Calculate the AC voltage drop for each resistor. Then measure using the DMM
and record the IR drop for each resistor.
Calculated:
V2.2=
KVL
V4.7=
VT= V2.2 + V4.7 + V10
V10=
Measured:
V2.2=
KVL
V4.7=
V10=
VT= V2.2 + V4.7 + V10
Calculate Vpeak and Vpeak-peak. for each resistor. What is the relationship between your measured Vpeak
and Vrms ?
4.
Using an Oscilloscope measure and record the AC IR drop for each resistor.
V2.2=
KVL
V4.7=
V10=
VT= V2.2 + V4.7 + V10
Calculate Vpeak and Vrms. for each resistor. What is the relationship between your measured Vpeak and
Vrms ?
Conclusion: