Federal Urdu University of Arts, Science & Technology Islamabad Pakistan THIRD SEMESTER ELECTRONICS - II BASIC ELECTRICAL & ELECTRONICS LAB
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1 THIRD SEMESTER ELECTRONICS - II BASIC ELECTRICAL & ELECTRONICS LAB DEPARTMENT OF ELECTRICAL ENGINEERING Prepared By: Checked By: Approved By: Engr. Saqib Riaz Engr. M.Nasim Khan Dr.Noman Jafri Lecturer (Lab) Senior Lab Engineer Dean Electrical Department ELECTRONICS-II 1
2 Name: Registration No: Semester: Batch: ELECTRONICS-II 2
3 PRACTICAL LIST S.NO. PRACTICAL NAME 01 Verification of the calculated value of a BJT amplifier 02 Implementation of OR gate using BJT s 03 Determination of Input-offset voltage of LM Implementation of the Buffer/Non-Inverting Amplifier using LM Implementation of the Inverting Amplifier using LM Implementation of the Summing Amplifier using LM Frequency Response of Active Low Pass Filter 08 Frequency Response of Active High Pass Filter 09 Plot the Drain Characteristics of a JFET 10 Plot the Transfer Characteristics of a JFET 11 JFET Self Biased Network 12 JFET Voltage Divider Bias Network 13 Implementation of Common Source Amplifier using JFET 14 Implementation of Common Drain Amplifier using JFET 15 A-stable Operation of a 555 Timer 16 Mono-stable Operation of a 555 Timer ELECTRONICS-II 3
4 Pre Lab # 01 BJT Amplifier Q # 01: What are the bias conditions of the base-emitter and base-collector junctions for a transistor to operate as an amplifier? Q # 02: What is amplification? Q # 03: How is voltage gain defined? Name two factors that determine the voltage gain of an amplifier? ELECTRONICS-II 4
5 Q # 04: Why we prefer CE amplifier rather than CB or CC amplifier? Q # 05: What is the voltage gain of a transistor amplifier that has an output of 5 V rms and an input of 250 mv rms? ELECTRONICS-II 5
6 Pre Lab # 02 Implementation of OR gate using BJT s Q # 01: When a transistor is used as a switch, in what two states is it operated? Q # 02: Make a truth table of OR as well as AND gate? Input A Input B Output Input A Input B Output OR gate AND gate Q # 03: Draw a circuit of AND gate using BJT? ELECTRONICS-II 6
7 Pre Lab # 03 Input offset voltage using op-amp Q # 01: Discuss op-amp compensation? Q # 02: Describe the effect of input offset voltage? Q # 03: What are two sources of dc output error voltages? ELECTRONICS-II 7
8 Pre Lab # 04 Buffer amplifier / Non-Inverting amplifier using LM 741 Q # 01: What is the voltage gain of buffer amplifier? Q # 02: Discuss briefly the operation of non-inverting amplifier? Q # 03: Explain closed loop voltage gain? Q # 03: What is the attenuation of non-inverting amplifier? ELECTRONICS-II 8
9 Pre Lab # 05 Inverting amplifier using LM 741 Q # 01: Explain briefly the operation of inverting amplifier? Q # 02: What are the impedances of an inverting amplifier? Q # 03: What is the gain of inverting amplifier? ELECTRONICS-II 9
10 Pre Lab # 06 Summing inverting amplifier using LM 741 Q # 01: Define summing point? Q # 02: What is the value of Rf/R for a five-input averaging amplifier? Q # 03: Describe the operation of a unity-gain summing amplifier? ELECTRONICS-II 10
11 Pre Lab # 07 Active low pass filter using LM 741 Q # 01: Describe the operation of low pass filter? Q # 02: What is the bandwidth of filter? Q # 03: What determines the response characteristic of a filter? Q # 05: Name the basic parts of an active filter? ELECTRONICS-II 11
12 Pre Lab # 08 Active high pass filter using LM 741 Q # 01: How does a high-pass Sallen-Key filter differ from the low-pass configuration? Q # 02: To increase the critical frequency of a high-pass filter, would you increase or decrease the resistor values? Q # 03: Write down the formulas of critical frequency & phase shift? ELECTRONICS-II 12
13 Pre Lab # 09 Drain characteristics of JFET Q # 01: Does an n-channel JFET require a positive or negative value for VGs? Q # 02: How is the drain current controlled in a JFET? Q # 03: What is the difference between Pinch off voltage & Cut off voltage? ELECTRONICS-II 13
14 Pre Lab # 10 JFET transfer characteristics Q # 01: What is JFET forward transconductance? Write down its formula? Q # 02: Write down the equation of drain current to express transfer characteristics of JFET? Q # 03: The VGS of a certain n-channel JFET is increased negatively. Does the drain current increase or decrease? ELECTRONICS-II 14
15 Pre Lab # 11 JFET self bias network Q # 01: Draw a circuit of self bias JFET network? Q # 02: Describe and explain briefly the graphical analysis of self bias JFET? ELECTRONICS-II 15
16 Pre Lab # 12 JFET voltage divider bias network Q # 01: Draw a circuit of voltage divider bias JFET network? Q # 02: Write down the formula of voltage divider for the above circuit? Q # 03: What is Q point stability of JFET voltage divider network? Explain briefly? ELECTRONICS-II 16
17 Pre Lab # 13 JFET as a common source amplifier Q # 01: When V gs, is at its positive peak, at what points are Id and V ds? Q # 02: What is the difference between Vgs and V Gs? Q # 03: What factors determine the voltage gain of a common-source FET amplifier? ELECTRONICS-II 17
18 Pre Lab # 14 JFET as a common drain amplifier Q # 01: When V gs, is at its positive peak, at what points are Id and V ds? Q # 02: What is the difference between Vgs and V Gs? Q # 03: What factors determine the voltage gain of a common-drain FET amplifier? ELECTRONICS-II 18
19 Pre Lab # 15 A stable operation of 555-timer Q # 01: Describe briefly the operation of A stable operation? Q # 02: What is difference between mark time & space time? Q # 03: Write down the formula of time period & frequency of A stable operation? ELECTRONICS-II 19
20 Pre Lab # 16 Mono stable operation of 555-timer Q # 01: Describe briefly the operation of mono stable operation? Q # 02: Write down the formula of time period & frequency of mono stable operation? Q # 03: What is the effect of the triggering pulse on the output waveform? ELECTRONICS-II 20
THIRD SEMESTER ELECTRONICS - II BASIC ELECTRICAL & ELECTRONICS LAB DEPARTMENT OF ELECTRICAL ENGINEERING
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