Part A: BJT Amplifier DC Biasing 1. Figure 1 shows a voltage divider circuit. By referring to Figure 1, produce design equation for each resistor (R₁, R₂, Rc and Rg) based on the following information: VCE = VCC VBE(ON) = 0.65 V VE = 0.1 Vcc R₁ IR2↓ R₂ Vcc lea Ical Re Vc Figure 1 IR2 = 10 IBQ Icq = 2 mA Vcc = 12 V

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INTRODUCTION
Input transducer such as microphone or audio signal, pressure sensor, and humidity sensor
produces small electrical signals. For reliable processing, any small signal needs to be amplified.
The circuit used for boosting electrical signals in a prescribed manner is termed amplifier.
PURPOSE
This assignment is:
1. To apply the basic laws, theorem and methods of analysis to design amplifier circuit.
2. To design a BJT amplifier to meet certain design specifications.
3. To perform a simulation using Multisim or equivalent software
4. To draw a frequency response on a semilog graph paper.
Part A: BJT Amplifier DC Biasing
1. Figure 1 shows a voltage divider circuit. By referring to Figure 1, produce design equation
for each resistor (R₁, R₂, Rc and Re) based on the following information:
VCE =
2Vcc
VBE(ON) = 0.65 V
VE = 0.1 Vcc
R₁
IR2
R₂
Vcc
IsQ
Ica Rc
Vc
VBE
Figure 1
www
+
VCE
"
RE
IR2 = 10 IBQ
Icq = 2 mA
Vcc = 12 V
Transcribed Image Text:INTRODUCTION Input transducer such as microphone or audio signal, pressure sensor, and humidity sensor produces small electrical signals. For reliable processing, any small signal needs to be amplified. The circuit used for boosting electrical signals in a prescribed manner is termed amplifier. PURPOSE This assignment is: 1. To apply the basic laws, theorem and methods of analysis to design amplifier circuit. 2. To design a BJT amplifier to meet certain design specifications. 3. To perform a simulation using Multisim or equivalent software 4. To draw a frequency response on a semilog graph paper. Part A: BJT Amplifier DC Biasing 1. Figure 1 shows a voltage divider circuit. By referring to Figure 1, produce design equation for each resistor (R₁, R₂, Rc and Re) based on the following information: VCE = 2Vcc VBE(ON) = 0.65 V VE = 0.1 Vcc R₁ IR2 R₂ Vcc IsQ Ica Rc Vc VBE Figure 1 www + VCE " RE IR2 = 10 IBQ Icq = 2 mA Vcc = 12 V
2. Construct the circuit shown in Figure 2, determine the value of Boxe at the given Q-point.
1 ΜΩ
10 ΚΩ
НА
Vcc = 12 V
오
1 kn
mA
f₁ = 30 Hz
= 30 kHz
fi
2N3904
Figure 2
3. Based on Boc obtained in Step 2, calculate the values of R₁, R₂, Re and Reusing your
derived equations in Step 1.
4. Construct the circuit in Figure 1, by using the values you obtained in Step 3.
Part B: BJT Amplifier Frequency Response
1. Design a common emitter amplifier with Ico= 2 mA by using the voltage divider biasing
circuit in Step 4 (above) to fulfil the following cut-off frequencies:
2. Simulate the circuit using Multisim to get the frequency response and determine the cut-
off values.
Transcribed Image Text:2. Construct the circuit shown in Figure 2, determine the value of Boxe at the given Q-point. 1 ΜΩ 10 ΚΩ НА Vcc = 12 V 오 1 kn mA f₁ = 30 Hz = 30 kHz fi 2N3904 Figure 2 3. Based on Boc obtained in Step 2, calculate the values of R₁, R₂, Re and Reusing your derived equations in Step 1. 4. Construct the circuit in Figure 1, by using the values you obtained in Step 3. Part B: BJT Amplifier Frequency Response 1. Design a common emitter amplifier with Ico= 2 mA by using the voltage divider biasing circuit in Step 4 (above) to fulfil the following cut-off frequencies: 2. Simulate the circuit using Multisim to get the frequency response and determine the cut- off values.
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