Student’s ID: _________________
EEE1016 Electronics I, Experiment BE2, Short Report Form
EEE1016 Electronics I: Experiment BE2: Transistor Circuits
Short Report Form
(Students are to submit the report immediately upon completion of the laboratory session)
Student’s Name: _____________________________
Student’s I.D.: ______________
Date: ______________
Degree Major.: _____________
Group: ____________
Part B: Experimental Results
(Student who is found copying experimental results, discussions and conclusions from
other group will immediately get zero marks in this overall experiment evaluation.)
4.0 Transistor test
Table E4.0: npn transistor test (2marks)
Transistor
Q1
VBE (V)
VBC (V)
Q2
Voltage source transistor / Q3
4.1 Static Characteristics
Table E4.1 (a): Measured hFE at various IC with VCE = 1.0V (3 marks)
IB, min =
10
20
IB (A)
VC1(mV)
IC (mA)
hFE
30
Table E4.1 (b): Measured IC values for plotting the output characteristics (5 marks)
VCE (V)
0
0.2
0.5
1
7
14
VC1(mV)
5
IC (mA)
VC1(mV)
10
IC (mA)
VC1(mV)
15
IB (A)
IC (mA)
VC1(mV)
20
IC (mA)
VC1(mV)
30
IC (mA)
Instructor’s Check (after Graph E4.1)
Sign : __________
Time : _________
Remarks:
Tri 1, 2016-17
1
EEE1016 Electronics I, Experiment BE2, Short Report Form
Student’s ID: _________________
Graph E4.1: Output characteristic curves (3 marks)
Tri 1, 2016-17
2
EEE1016 Electronics I, Experiment BE2, Short Report Form
Student’s ID: _________________
4.2 Effects of Biasing on a BJT Amplifier
Graph E4.2: VCE waveforms at various IBQ values (4 marks)
(Note: Label waveforms with IBQ = 5 A, IBQ = 10 A, …)
CH1: 50 mV/div
CH2: 2 V/div
Time base: 20 s/div
CH1 ground
vi
CH2 ground
Table E4.2 (b): Measured VCE,max and VCE,min at various IBQ values (3 marks)
VCE,max (V) VCE,min (V)
AV
IB (A)
5
10
15
20
30
Instructor’s Check [after Table E4.2 (b)]
Sign : __________
Time : _________
Remarks:
Tri 1, 2016-17
3
EEE1016 Electronics I, Experiment BE2, Short Report Form
Student’s ID: _________________
Discussions (5 marks)
Discuss on the experimental results.
Some of the questions can be understood before the experiments.
Section 4.1
1. Discribe the relationship between IC and the VCE of the output characteristic curves
plotted in Graph E4.1. (Level 2: Comprehension)
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
Section 4.2
1. Describe the relationship of the undistorted VCE waveforms with respect to vi waveform.
(Level 1: Knowledge)
________________________________________________________________________
________________________________________________________________________
Conclusions (5 marks)
Make conclusion on:
i) Relationship between the DC current gain, hFE and the Ic at VCE = 1.0V.
ii) Output waveform distortion and its cause(s).
Tri 1, 2016-17
4