![QUESTION4 Total 24 Marks] For the amplifier circuit shown in Figure 4, assume the input signal V has zero DC component. Assume both transistors have p-100. (a) State the type of feedback topology used in the amplifier circuit and which type of 12 marks] amplifier is shown in the figure. (b Determine the DC voltages at all nodes of transistors Q1 and Q2. and the DC currents 18 marks] at the emitters of transistors Q1 and Q2 (c) Use the feedback analysis method to find Vo/Vs and the input resistance of the feedback amplifier [14 marks] +10 V R, 100 ? 200 4 02 2N2222 01 Q2N2222 Rs Rf 5k 5k Vs R-:-60 ? Figure 4 BJT amplifier circuit](http://img.homeworklib.com/questions/2354e070-bc09-11ea-87a9-2dda6fe8bd13.png?x-oss-process=image/resize,w_560)
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QUESTION4 Total 24 Marks] For the amplifier circuit shown in Figure 4, assume the input signal...
Circuit Analysis For the circuit shown in Figure Q2: (a) (b) Determine the amplifier type and...
Circuit Analysis
For the circuit shown in Figure Q2: (a) (b) Determine the amplifier type and feedback topology Derive the input impedance with feedback, Zif and state whether it is increased or decreased from the circuit without feedback. If Ar 10, Zi 500k2, Zo = 2kQ, and Zof- 25k2, calculate Zi, Ax and B. (c) I IG Vo V Ax V Zd Zof Figure Q2
For the circuit shown in Figure Q2: (a) (b) Determine the amplifier type and feedback...
Question 4: Figure 4 In the series-shunt feedback amplifier shown in Figure 4, the transistors are...
Question 4: Figure 4 In the series-shunt feedback amplifier shown in Figure 4, the transistors are biased with ideal current-sources 1, 0.1mA, 12 1mA, the devices operate with VE0.7V and t = 100. The input signal V, has a zero DC component. Resistances are (a) If the open loop gain is large, what do you expect the closed-loop gain A, -V/V, to be? Give both an expression and its approximate value (b) Find the DC emitter current in each of...
An analogue amplifier circuit is shown in Figure 1 below. VDD Q5 15V JL - Vout...
An analogue amplifier circuit is shown in Figure 1 below. VDD Q5 15V JL - Vout Irer RI Vina JET T7T Figure 1 Integrated amplifier circuit. Circuit Data: Vpp = 15 V, IREF = I1 = I2 = 1.0 mA Transistor Data: Q1: NMOS, un Cox = 80 A/V?, W/L = 100 um/0.8 um, Vtn = 0.8 V, L = 0.10 um/V Q2: NPN BJT, B = 100, Vbe = 0.7 V, VA = 150 V Q3, Q4: NMOS, un...
EEET255 Electronics Page 4 of6 QUESTION 3: [25 marks] Figure 3 shows a feedback amplifier circuit...
EEET255 Electronics Page 4 of6 QUESTION 3: [25 marks] Figure 3 shows a feedback amplifier circuit R, is the source resistor, R is the feedback resistor and R, is the load resistor. The op-amp has an internal input resistance of R, an intemal output resistance R, and an internal gain of A Apply the "Systematic Analysis" method in this question. Figure 3 3.a State the feedback topology used in the amplifier circuit and which type of feedback amplifier is shown...
Question I : Consider the amplifier circuit shown below (p-150 for both transistors) (18 marks) +12V R4 1k8 R1 15k Q1 2N3904 C2+ 10μ R2 6V 4k7 2mA Out Q2 2N3904 C1 R3 10k R5 1k8 In 10H (i) Perform...
Question I : Consider the amplifier circuit shown below (p-150 for both transistors) (18 marks) +12V R4 1k8 R1 15k Q1 2N3904 C2+ 10μ R2 6V 4k7 2mA Out Q2 2N3904 C1 R3 10k R5 1k8 In 10H (i) Perform DC analysis and prove that the indicated voltages and currents in the figure are correctly calculated. Find the operating point of Q1 and Q2 (5 marks) (ii) Calculate the gain of this amplifier (5 marks) (iii) In the lab, only...
Circuit Analysis R Rs Io. + Vs Vo Figure Q3(a) Ru WHI (a) Figure Q3(a) shows...
Circuit Analysis
R Rs Io. + Vs Vo Figure Q3(a) Ru WHI (a) Figure Q3(a) shows an Op-Amp amplifier circuit which employs a negative feedback (i) circuit Classify the feedback topology used and the type of amplifier in the (4 marks) (ii) Formulate the feedback network (B) and the overall gain of the amplifier with feedback (AF). (10 marks)
R Rs Io. + Vs Vo Figure Q3(a) Ru WHI
(a) Figure Q3(a) shows an Op-Amp amplifier circuit which employs a...
Figure 2 shows a feedback amplifier circuit. Rs is the source resistor and R, is the...
Figure 2 shows a feedback amplifier circuit. Rs is the source resistor and R, is the load resistor RS Vs VI RL OPAMP R2 R1 RM R3 R4 Step 1: open-loop and closed-loop circuits identification 1.1 Identify the source, the load, and the closed-loop amplifier 1.2 Identify the open-loop amplifier (**A" eireuit) and the feedback network (B" eircuit) in the closed-loop amplifier 1.3 Identify the connection type between the "A" circuit and the "B" circuit at both the input and...
QUESTION 2: (20 MARKS) +5 V X2 71 QA X2 ×10 5 V Figure Q2.1 The...
QUESTION 2: (20 MARKS) +5 V X2 71 QA X2 ×10 5 V Figure Q2.1 The circuit shown in Figure Q2.1, is a multistage amplifier with a differential input stage It uses a folded cascode involving transistor Q3. Note that transistor Q5 operates in class B mode and is off at the quiescent point, while Q4 is ON at the quiescent point with QD sinking its bias current. All transistors have Vad-0.7V, VA-200 V, and β-100 a) Perform a dc...
1 (70 points) In the following multi-stage amplifier input and output of the amplifier as well as...
1 (70 points) In the following multi-stage amplifier input and output of the amplifier as well as the feedback resistance (RF) were AC coupled to nodes through the coupling capacitances (Ce-100uF). W/L)2 55/0.25u VAA R2 M1 Xin R, VI M2 Ri Ro a. (20 points) Calculate the bias currents of IpS,MI, IDS M2, IR2 and the total DC power consumption of the circuit assuming Ro Determine the operation regions of the transistors. (20 points) Find the type and polarity of...
QUESTION 2 [Total 20 Marks] Figure 2.1 presents the BJT amplifier's DC biasing voltages (PSpice Biasing...
QUESTION 2 [Total 20 Marks] Figure 2.1 presents the BJT amplifier's DC biasing voltages (PSpice Biasing Point simulation). In your evaluation assume that ANSWER: the output resistance of the BJT Q1 is infinite a)-29.4x105 A/V Establish the slope of the DC load line Establish the slope of the AC load line Sketch the DC and AC load lines directly on the transistor's Ic vs Vc plot provided in Figure 2.2 a) b) c) [3 marks] 3 marks] b)-75.8x10-3 A/ [10...
Circuit Analysis
For the circuit shown in Figure Q2: (a) (b) Determine the amplifier type and feedback topology Derive the input impedance with feedback, Zif and state whether it is increased or decreased from the circuit without feedback. If Ar 10, Zi 500k2, Zo = 2kQ, and Zof- 25k2, calculate Zi, Ax and B. (c) I IG Vo V Ax V Zd Zof Figure Q2
For the circuit shown in Figure Q2: (a) (b) Determine the amplifier type and feedback...
Question 4: Figure 4 In the series-shunt feedback amplifier shown in Figure 4, the transistors are biased with ideal current-sources 1, 0.1mA, 12 1mA, the devices operate with VE0.7V and t = 100. The input signal V, has a zero DC component. Resistances are (a) If the open loop gain is large, what do you expect the closed-loop gain A, -V/V, to be? Give both an expression and its approximate value (b) Find the DC emitter current in each of...
An analogue amplifier circuit is shown in Figure 1 below. VDD Q5 15V JL - Vout Irer RI Vina JET T7T Figure 1 Integrated amplifier circuit. Circuit Data: Vpp = 15 V, IREF = I1 = I2 = 1.0 mA Transistor Data: Q1: NMOS, un Cox = 80 A/V?, W/L = 100 um/0.8 um, Vtn = 0.8 V, L = 0.10 um/V Q2: NPN BJT, B = 100, Vbe = 0.7 V, VA = 150 V Q3, Q4: NMOS, un...
EEET255 Electronics Page 4 of6 QUESTION 3: [25 marks] Figure 3 shows a feedback amplifier circuit R, is the source resistor, R is the feedback resistor and R, is the load resistor. The op-amp has an internal input resistance of R, an intemal output resistance R, and an internal gain of A Apply the "Systematic Analysis" method in this question. Figure 3 3.a State the feedback topology used in the amplifier circuit and which type of feedback amplifier is shown...
Question I : Consider the amplifier circuit shown below (p-150 for both transistors) (18 marks) +12V R4 1k8 R1 15k Q1 2N3904 C2+ 10μ R2 6V 4k7 2mA Out Q2 2N3904 C1 R3 10k R5 1k8 In 10H (i) Perform DC analysis and prove that the indicated voltages and currents in the figure are correctly calculated. Find the operating point of Q1 and Q2 (5 marks) (ii) Calculate the gain of this amplifier (5 marks) (iii) In the lab, only...
Circuit Analysis
R Rs Io. + Vs Vo Figure Q3(a) Ru WHI (a) Figure Q3(a) shows an Op-Amp amplifier circuit which employs a negative feedback (i) circuit Classify the feedback topology used and the type of amplifier in the (4 marks) (ii) Formulate the feedback network (B) and the overall gain of the amplifier with feedback (AF). (10 marks)
R Rs Io. + Vs Vo Figure Q3(a) Ru WHI
(a) Figure Q3(a) shows an Op-Amp amplifier circuit which employs a...
Figure 2 shows a feedback amplifier circuit. Rs is the source resistor and R, is the load resistor RS Vs VI RL OPAMP R2 R1 RM R3 R4 Step 1: open-loop and closed-loop circuits identification 1.1 Identify the source, the load, and the closed-loop amplifier 1.2 Identify the open-loop amplifier (**A" eireuit) and the feedback network (B" eircuit) in the closed-loop amplifier 1.3 Identify the connection type between the "A" circuit and the "B" circuit at both the input and...
QUESTION 2: (20 MARKS) +5 V X2 71 QA X2 ×10 5 V Figure Q2.1 The circuit shown in Figure Q2.1, is a multistage amplifier with a differential input stage It uses a folded cascode involving transistor Q3. Note that transistor Q5 operates in class B mode and is off at the quiescent point, while Q4 is ON at the quiescent point with QD sinking its bias current. All transistors have Vad-0.7V, VA-200 V, and β-100 a) Perform a dc...
1 (70 points) In the following multi-stage amplifier input and output of the amplifier as well as the feedback resistance (RF) were AC coupled to nodes through the coupling capacitances (Ce-100uF). W/L)2 55/0.25u VAA R2 M1 Xin R, VI M2 Ri Ro a. (20 points) Calculate the bias currents of IpS,MI, IDS M2, IR2 and the total DC power consumption of the circuit assuming Ro Determine the operation regions of the transistors. (20 points) Find the type and polarity of...
QUESTION 2 [Total 20 Marks] Figure 2.1 presents the BJT amplifier's DC biasing voltages (PSpice Biasing Point simulation). In your evaluation assume that ANSWER: the output resistance of the BJT Q1 is infinite a)-29.4x105 A/V Establish the slope of the DC load line Establish the slope of the AC load line Sketch the DC and AC load lines directly on the transistor's Ic vs Vc plot provided in Figure 2.2 a) b) c) [3 marks] 3 marks] b)-75.8x10-3 A/ [10...
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