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BIOMEDICAL ELECTRONIC ENGINEERING PROGRAMSCHOOL OF MECHATRONIC ENGINEERING

UNIVERSITY MALAYSIA PERLIS (UNIMAP)

Name : _________________________________ Matrix No : ________________

Date : _________________

Title : Experiment 3: CAPACITORS

1) LEARNING OUTCOMES

At the end of this laboratory, students should be able to:

1. Construct the circuit on breadboard2. Use measurement tools to find the required parameter

3. Differentiate between DC and AC condition.

2) COMPONENTS AND EQUIPMENTS:

2.1) Breadboard 1 unit2.2) DC power supply 1 unit2.3) Digital Multimeter 1 unit2.4) Function Generator 1 unit2.5) Wires2.6) Resistors:

2.6.1) 10 resistor- 1 pcs2.6.2) 100 resistor- 1 pcs2.6.2) 470 resistor- 1 pcs2.6.3) 1.0 k resistor- 1 pcs2.6.4) 1.2 k resistor- 1 pcs2.6.5) 4.7 k resistor- 1 pcs2.6.6) 3.3 k resistor- 1 pcs

2.7) Capacitors:2.7.1) 100uF 2 pcs2.7.2) 1uF 1pcs2.7.3) 0.033uF 1 pcs

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3) PROCEDURE

All calculations and measurements must be recorded in section 4.

PART A: PRE

-LAB

WORK

By considering the circuit in Fig. 3.1 and Fig. 3.2:

EXPERIMENT 1

a) Find the parameters that required.

b) Show the calculation and fill in Table 1.

Figure 3.1

Figure 3.2

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a) Refer Table 2. Calculate all the capacitive reactance, X

EXPERIMENT 2

C

for each frequencygiven and then complete Table 2. (Use C = 0.033uF)

b) Based on your calculation in Table 3, plot the capacitive reactance, XC

versus

frequency in Graph 1. (Label all the axis and use maximum space in the graph)

XCfC

XC2

1=and the frequency is given by the formula

** = 2f

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PART B:

EXPERIMENT 1

a) Connect the circuit in Fig. 3.1 on the breadboard.

b) Set the DC power supply at 10V. By using multimeter, verify the terminal voltage

produced by the power supply is 10V.

c) Measure and record the parameters that required.

d) Transfer all the recorded value in Table 2.

e) Repeat step (b) to (d) for the circuit in Fig. 3.2.

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a) Setup circuit as shown in Fig. 3.3.

EXPERIMENT 2

b) Set VIN to 10VPP

at 1 kHz sine wave.

c) Attach CH1 oscilloscope to VIN and CH2 to Rsense .

d) Set the measurement at the oscilloscope screen to CH1 Pk-Pk and Frequencyand also to CH2 Pk-Pk and Frequency

e) Record the peak to peak value for CH2 which is voltage across Rsense (VRsense

) inTable 4.

f) Increase the frequency step by step as in Table 4. Record the value for CH2each time you increase the frequency. Make sure that V IN is maintaining at10VPP

each time you increase the frequency.

g) From the value VRsense that you have recorded, calculate Input Current, Iin andthen Reactance, XC

. Complete Table 4.

h) Based on your value in Table 4, plot reactance, XC

versus frequency in Graph 2.(Label all the axis and use maximum space in the graph)

i) Compare your theoretical results which are Table 2 and Graph 1 with yourpractical results which are Table 4 and Graph 2.

C1

0.033uF

VINCH1

+

_

+

_

Rsense

10CH2

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Name : _________________________________ Matrix No : ________________

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4) RESULT

Part A Part B Part CTotal

Table 1 Table 2 Table 3 Table 4

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PARTA(CALCULATION)

TABLE 1

EXPERIMENT 1

I(mA) V1 V2

Figure3.1

I1(mA) I2(mA) I3(mA) V1 V2 V3

Figure3.2

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Name : _________________________________ Matrix No : ________________

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Name : _________________________________ Matrix No : ________________

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EXPERIMENT 2

TABLE 2

Frequency, f (Hz)

Reactance, XC ()

C

1XC=

1k

2k

3k

4k

5k

6k

8k

10k

15k

20k

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Name : _________________________________ Matrix No : ________________

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PART B(MEASUREMENT)

TABLE 3

EXPERIMENT 1

I(mA) V1 V2

Figure3.1

I1(mA) I2(mA) I3(mA) V1 V2 V3

Figure3.2

TABLE 4

EXPERIMENT 2

Frequency, f (Hz) Voltage, VRsense (V)

Current, I (mA)

10

VI

Rsense

in=

Reactance, XC

*

()

in

in

CI

VX =

1k

2k

3k

4k

5k

6k

8k

10k

15k

20k

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Name : _________________________________ Matrix No : ________________

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GRAPH 1

GRAPH 2

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Name : _________________________________ Matrix No : ________________

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5) DISCUSSION:[Hint: What are your findings in this lab, compare calculated value with measured one.]

6) CONCLUSION:

[Hint: What can you conclude from the lab? i.e. Learning Outcomes, Discussion]