Given the multistage amplifier below, select all correct statements Multistage-Amp Group of answer choices The collector...
Given the multistage amplifier below, select all correct statements Multistage-Amp Group of answer choices
The collector current in Q2 is approximately 16mA
The input impedance of the amplifier is approximately 2.5Megohms
The output impedance of the amplifier (assuming Q2) has a Beta=100 is close to 500Kohms
The overall gain for the circuit (including loading effects) is approximately 13 If an overall gain for the multistage amplifier of 20 is desired, RG can be selected around 450 to account for any loses due to loading and loss of gain in the buffering stages.
In creasing R1 & R2 by 10 will increase the impedance of the CE amplifier stage by 10 resulting in less loading between the CD and CE stage, and therefor improving the overall circuit performance
The drain current in M1 is approximately 1mA The input impedance of the amplifier is 20Kohms The output impedance of the amplifier (assuming Q2) has a Beta=100 is theoretically close to 100 ohms The structure of this multi-state amplifier is a common drain (CD)/source follower input stage to increase the input impedance, a common emitter (CE) to achieve the desired gain, and a common collector (CC)/emitter follower to lower the output impedance.
The loss of gain in the overall multistage amplifier with respect to gain achieved by the CE stage is primarily due to the CD stage. The structure of this multi-state amplifier is a common drain (CD)/source follower input stage to increase the input impedance, a common emitter (CE) to achieve the desired gain, and a common collector (CC)/emitter follower to lower the output impedance. The loss of gain in the overall multistage amplifier with respect to gain achieved by the CE stage is primarily due to the output stage (common collector) The collector current in Q2 is approximately 1mA Increasing Rc from 10K to 100K will increase the gain by 10 The drain current in M1 is approximately 0.4mA The passband of this ac-coupled amplifier is approximately 50Hz to 1MHz. The coupling and by-pass capacitors control the lower corner frequency (50 Hz) and the internal resistances of the MOSFET & BJT control the upper corner operating frequency (1MHz). If all the capacitors are reduced by a factor of 10, the circuit will not operate by frequencies less than 3KHz. Consequently, if the capacitors were reduced by a factor of 10, for an input signal of 1KHz, the overall gain would be less than 10 (due to the amplifier frequency response, as opposed to loading). The overall gain for the circuit (including loading effects) is approximately 10 The output impedance of the amplifier (assuming Q2) has a Beta=100 is close to 10Kohms The structure of this multi-state amplifier is a common drain (CD)/source follower input stage to increase the input impedance, a common emitter (CE) to achieve the desired gain, and a common collector (CC)/emitter follower to lower the output impedance. The loss of gain in the overall multistage amplifier with respect to gain achieved by the CE stage is primarily due to interstage loading. The input impedance of the amplifier is approximately 5Megohms The overall gain for the circuit (including loading effects) is approximately 20
Homework Answers
A multi stage amplifier is cascading of one more amplifiers.
The question is not clear.. That is it requires a diagram for clear analysis. Hope you post a question with the diagram.
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Given the multistage amplifier below, select all correct
statements Multistage-Amp Group of answer choices
The collector...
Q2. Discuss the correctness of the following statements a. The common drain (CD) amplifier, with ...
Q2. Discuss the correctness of the following statements a. The common drain (CD) amplifier, with the input applied to the gate and the output taken from the source, is a useless voltage amplifier from the collector, is an excellent voltage amplifier from the drain, is an excellent voltage amplifier. b. The common base (CB) amplifier, with input applied to the emitter and output taken . The common source (CS) amplifier, with input applied to the bake and output taken
Q2....
12. What is the configuration analysis defined by transistor Q2 in Figure 4? 20v 18 68...
12. What is the configuration analysis defined by transistor Q2 in Figure 4? 20v 18 68 C Ver 02 ce lu 56 WI HE C 4760 150 Figure 4 A Common Collector B. Common Base C. Common Emitter D. Emitter Follower 13. Refer on Figure 4 also, what is the type of connection on this design? A Cascade amplifier B. Cascode amplifier C. Darlington amplifier D. Transformer amplifier 14. Based on Figure 4, state the name of circuit diagram applied...
Q1. For the cascade amplifier circuit shown in Fig (1): a) What are the functions of the capacitors C, C2 and C3? And w...
Q1. For the cascade amplifier circuit shown in Fig (1): a) What are the functions of the capacitors C, C2 and C3? And what are the functions of the capacitors Cs and CE? b) What are the functions of the resistors RD and Rc? c) Draw the DC biasing circuits for each stage. d) Find loa, VGsa, VDs and gm for the JFET stage (you may use either mathematical or graphical methods) e) Calculate l, Ic, le and Ve for...
please make sure you are correct 1. Select configuration for a single-transistor amplifier with a gain...
please make sure you are correct
1. Select configuration for a single-transistor amplifier with a gain of 30 dB and input resistance of 5 Mohm. A) common-emitter; b) common-gate; c) common-source; d)common-collector; e) cannot be implemented by single stage amplifier. 2. Select configuration for a single-transistor amplifier with a gain close to 0 dB and input resistance of 5 Mohm and load resistor of 50 ohm. a) common-emitter; b) common-gate; c) common-source; d)common-collector; e) cannot be implemented by single stage...
Problem 4: The following figure shows a biplolar op-amp circuit, the input differential pair Q,-Q, is...
Problem 4: The following figure shows a biplolar op-amp circuit, the input differential pair Q,-Q, is loaded in a current mirror formed by Q2-Q. The second stage is formed by the current-source-loaded common-emitter transistor Q. Unlike the CMOS circuit, here there is an output stage formed by the emitter follower Q. The function of capacitor Cc will be explained later in feedback chapter. All transistors have B=100, VBE = 0.7V, and r = 0. (a) For inputs grounded and output...
The Final Project for the ELECTRONICS-1 course for, consists of designing a cascaded BJT Amplifier; using...
The Final Project for the ELECTRONICS-1 course for, consists of
designing a cascaded BJT Amplifier; using 2 stages. The first stage
will be the Common Emitter (CE) Amplifier, the second stage is the
Common Collector (CC) Amplifier, as shown in the general diagram
below:
The overall amplification (voltage gain) Atotal =
98
The input source voltage Vsource is
an ideal source(Rs=0 Ohm) with peak voltage 10 mV,
and the source frequency
fsource =2K Hz
The load resistance RL = 47...
Avec Úvo SRE L V II. (5pt) Consider the above-right common-collector or emitter-follower BJT amplifier circuit....
Avec Úvo SRE L V II. (5pt) Consider the above-right common-collector or emitter-follower BJT amplifier circuit. Given: ß= 100, RE = 10 k1, Vcc = 20 V, RB = 5 k1, R1 = 10 kl, and Ry = 2 k1. (a) (1pt) Find the Q-point, i.e. Ibo, Ico, and VCEO; (b) (1pt) draw the small-signal equivalent circuit assuming that the capacitors (C, and Cy) are short circuits for the small signal; (c) (1pt) solve for the voltage gain, Av; (d)...
You are required to design a 2-stage voltage amplifier (find values for RE, RC1, RC2) to meet the following criteria: an...
You are required to design a 2-stage voltage amplifier (find
values for RE, RC1, RC2) to meet the following criteria: an input
resistance of 400 kΩ and an overall voltage gain equal to or
greater than 250, with a resistor output load, RL. Use a
common-emitter with emitter degradation (RE) stage for the input,
followed by a commonemitter amplifier with bias current equal to
0.5 mA. (VCC = 20 V, βo = 200 and the DC levels of the first...
pls answer all and asap.tqvm. (a) () What is the significant used of multistage amplifier compared...
pls
answer all and asap.tqvm.
(a) () What is the significant used of multistage amplifier compared to single stage amplifier? (2 marks) (ii) In terms of circuit connection, how to differentiate between direct and capacitively coupled amplifier circuit? (1 mark) (ii) Give a reason why the capacitively coupled amplifier circuit is not suitable for amplifying DC voltage? (2 marks) (b) The multistage amplifier circuit of Figure Q.3 have the following parameters: Q1, Q2: B = 200, VBE = 0.7 V,....
1.0 kn. RE-390 Ω, r-15 Ω. and ßac-75. 5. For a common-emitter amplifier, Rc Assuming that Rg is completely bypassed at the operating frequency, the voltage gain is (a) 66.7 (d) 75 (b) 2.56 (c) 2....
1.0 kn. RE-390 Ω, r-15 Ω. and ßac-75. 5. For a common-emitter amplifier, Rc Assuming that Rg is completely bypassed at the operating frequency, the voltage gain is (a) 66.7 (d) 75 (b) 2.56 (c) 2.47 6. In the circuit of Question 5, if the frequency is reduced to the point where Xctbypass) RE, the voltage gain (a) remains the same (b) is less (c) is greater 7. In a common-emitter amplifier with voltage-divider bias, Rimlbase) 68 k2, Ri 33...
Q2. Discuss the correctness of the following statements a. The common drain (CD) amplifier, with the input applied to the gate and the output taken from the source, is a useless voltage amplifier from the collector, is an excellent voltage amplifier from the drain, is an excellent voltage amplifier. b. The common base (CB) amplifier, with input applied to the emitter and output taken . The common source (CS) amplifier, with input applied to the bake and output taken
Q2....
12. What is the configuration analysis defined by transistor Q2 in Figure 4? 20v 18 68 C Ver 02 ce lu 56 WI HE C 4760 150 Figure 4 A Common Collector B. Common Base C. Common Emitter D. Emitter Follower 13. Refer on Figure 4 also, what is the type of connection on this design? A Cascade amplifier B. Cascode amplifier C. Darlington amplifier D. Transformer amplifier 14. Based on Figure 4, state the name of circuit diagram applied...
Q1. For the cascade amplifier circuit shown in Fig (1): a) What are the functions of the capacitors C, C2 and C3? And what are the functions of the capacitors Cs and CE? b) What are the functions of the resistors RD and Rc? c) Draw the DC biasing circuits for each stage. d) Find loa, VGsa, VDs and gm for the JFET stage (you may use either mathematical or graphical methods) e) Calculate l, Ic, le and Ve for...
please make sure you are correct
1. Select configuration for a single-transistor amplifier with a gain of 30 dB and input resistance of 5 Mohm. A) common-emitter; b) common-gate; c) common-source; d)common-collector; e) cannot be implemented by single stage amplifier. 2. Select configuration for a single-transistor amplifier with a gain close to 0 dB and input resistance of 5 Mohm and load resistor of 50 ohm. a) common-emitter; b) common-gate; c) common-source; d)common-collector; e) cannot be implemented by single stage...
Problem 4: The following figure shows a biplolar op-amp circuit, the input differential pair Q,-Q, is loaded in a current mirror formed by Q2-Q. The second stage is formed by the current-source-loaded common-emitter transistor Q. Unlike the CMOS circuit, here there is an output stage formed by the emitter follower Q. The function of capacitor Cc will be explained later in feedback chapter. All transistors have B=100, VBE = 0.7V, and r = 0. (a) For inputs grounded and output...
The Final Project for the ELECTRONICS-1 course for, consists of
designing a cascaded BJT Amplifier; using 2 stages. The first stage
will be the Common Emitter (CE) Amplifier, the second stage is the
Common Collector (CC) Amplifier, as shown in the general diagram
below:
The overall amplification (voltage gain) Atotal =
98
The input source voltage Vsource is
an ideal source(Rs=0 Ohm) with peak voltage 10 mV,
and the source frequency
fsource =2K Hz
The load resistance RL = 47...
Avec Úvo SRE L V II. (5pt) Consider the above-right common-collector or emitter-follower BJT amplifier circuit. Given: ß= 100, RE = 10 k1, Vcc = 20 V, RB = 5 k1, R1 = 10 kl, and Ry = 2 k1. (a) (1pt) Find the Q-point, i.e. Ibo, Ico, and VCEO; (b) (1pt) draw the small-signal equivalent circuit assuming that the capacitors (C, and Cy) are short circuits for the small signal; (c) (1pt) solve for the voltage gain, Av; (d)...
You are required to design a 2-stage voltage amplifier (find
values for RE, RC1, RC2) to meet the following criteria: an input
resistance of 400 kΩ and an overall voltage gain equal to or
greater than 250, with a resistor output load, RL. Use a
common-emitter with emitter degradation (RE) stage for the input,
followed by a commonemitter amplifier with bias current equal to
0.5 mA. (VCC = 20 V, βo = 200 and the DC levels of the first...
pls
answer all and asap.tqvm.
(a) () What is the significant used of multistage amplifier compared to single stage amplifier? (2 marks) (ii) In terms of circuit connection, how to differentiate between direct and capacitively coupled amplifier circuit? (1 mark) (ii) Give a reason why the capacitively coupled amplifier circuit is not suitable for amplifying DC voltage? (2 marks) (b) The multistage amplifier circuit of Figure Q.3 have the following parameters: Q1, Q2: B = 200, VBE = 0.7 V,....
1.0 kn. RE-390 Ω, r-15 Ω. and ßac-75. 5. For a common-emitter amplifier, Rc Assuming that Rg is completely bypassed at the operating frequency, the voltage gain is (a) 66.7 (d) 75 (b) 2.56 (c) 2.47 6. In the circuit of Question 5, if the frequency is reduced to the point where Xctbypass) RE, the voltage gain (a) remains the same (b) is less (c) is greater 7. In a common-emitter amplifier with voltage-divider bias, Rimlbase) 68 k2, Ri 33...
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