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A direct-coupled amplifier has dc gain of 1000VN and an upper 3dB frequency oH of 100kHz....
Sketch the Bode plots for a stable three-pole amplifier with dc gain 10^5 whose poles have magnit...
Sketch the Bode plots for a stable three-pole amplifier with dc
gain 10^5 whose poles have magnitudes 0.1 MHz, 1 MHz and 10 MHz.
Find the gain margin and phase margin of the amplifier if it is
connected in a feedback loop with (a) unity feedback factor; (b)
feedback factor 5.623 x 10^-5; (c) closed-loop dc gain 50 dB. In
each case indicate whether the closed-loop amplifier is stable or
unstable. What is the minimum stable closed-loop dc gain of...
PROBLEM 2 (25 pts) Consider the amplifier circuit below. Determine: a) Miller capacitance relevant to this...
PROBLEM 2 (25 pts) Consider the amplifier circuit below. Determine: a) Miller capacitance relevant to this circuit. ANSWER: b) Upper 3dB frequency (Hertz). ANSWER: c) Midband voltage gain. ANSWER: d) Sketch Bode plots of the voltage gain magnitude and phase (provide clear plots). 9V Circuit: RS1.2KR Ri=2kk ->0 SRO=100kr Cas=10 o F & Ro=1ks - Kp=2mA/uz VTP--2 V - 0.01 V-
Determine DC gain and crossover frequency from the following Bode plots. Magnitude (dB) Phase (deg) -180...
Determine DC gain and crossover frequency from the following Bode plots. Magnitude (dB) Phase (deg) -180 10-1 100 103 10 Frequency (rad/s) DC gain = 10.8, cr = 1.2 rad/s DC gain = 2.5, wc = 4.2 rad/s DC gain = 5.0 dB, -2.5 rad/s • DC gain = 1.8 dB, -2.1 rad/
I have a CS amplifier and I have to find the upper 3dB frequency using the...
I have a CS amplifier and I have to find the upper 3dB frequency
using the method of open-circuit constants with given values.
VDD VDD 10V R3 12k R1 >600k 1uF 2N7000* 1uF SRL 10k + Vs ( 0.1 Vpk 1kHz R2 > 450k R4 50 03 10uF Fig. 1. CS Amplifier: schematic For the circuit of the figure, determine the upper 3dB frequency fu analytically using the method of open-circuit constants (e.g., text-book, pp. 733-736, Sec. 9.4.3-4.). Use the...
1. The common source amplfier shown below uses a dc-coupled input and the load capacitance has...
1. The common source amplfier shown below uses a dc-coupled input and the load capacitance has been removed. Assume that the high-frequency cutoff (-3dB) frequency f. is determined chiefly by R and the total input capacitance, which consists of Cg in parallel with the Miller effect capacitance reflected nto the input. Calculate and show the M coupling and bypass capacitors shown in the circuit can be treated as short-cicuits t capacitance, then estimate fs For this analysis, the R 10k...
3. The non-inverting amplifier below has a gain that depends on frequency. Determine the magnitude of...
3. The non-inverting amplifier below has a gain that depends on frequency. Determine the magnitude of the voltage gain at (a) "signal frequencies" when the capacitor may be treated as a short, (b) DC, when the capacitor may be treated as an open, and (c) at any frequency, with a formula for the gain as a function of R1, R2 and C1. Choose part values to make the amp have a gain of 20dB at signal frequencies that drops to...
Draw and explain the gain frequency characteristic of a resistance–capacitance-coupled amplifier. Reference should be made to...
Draw and explain the gain frequency characteristic of a resistance–capacitance-coupled amplifier. Reference should be made to mid-band frequencies and to cutoff points. An amplifier has an open-circuit voltage gain of 800, an output resistance of 20 Ω and an input resistance of 5 kΩ. It is supplied from a signal source of e.m.f. 10 mV and internal resistance 5 kΩ. If the amplifier supplies a load of 30 Ω, .
Find the gain margin, phase margin, gain crossover frequency (wc), and phase crossover frequency (wp) analytically...
Find the gain margin, phase margin, gain crossover frequency (wc), and phase crossover frequency (wp) analytically (without Bode plot) for the following transfer function: F(s) = [10*(s+2)]/[s*(s+1)*(s^2 + 2s + 12)].
1. (20 points). A transfer function has the following zeros and poles: zero at s=-105 and s= poles at s-100 and s--1000. The magnitude of the transfer function at ω= 105 rad/s is equal 100. Find the...
1. (20 points). A transfer function has the following zeros and poles: zero at s=-105 and s= poles at s-100 and s--1000. The magnitude of the transfer function at ω= 105 rad/s is equal 100. Find the transfer function T(s) and sketch Bode plots for the magnitude and phase, ˇ
1. (20 points). A transfer function has the following zeros and poles: zero at s=-105 and s= poles at s-100 and s--1000. The magnitude of the transfer function at ω=...
Sketch the Bode plots for a stable three-pole amplifier with dc
gain 10^5 whose poles have magnitudes 0.1 MHz, 1 MHz and 10 MHz.
Find the gain margin and phase margin of the amplifier if it is
connected in a feedback loop with (a) unity feedback factor; (b)
feedback factor 5.623 x 10^-5; (c) closed-loop dc gain 50 dB. In
each case indicate whether the closed-loop amplifier is stable or
unstable. What is the minimum stable closed-loop dc gain of...
PROBLEM 2 (25 pts) Consider the amplifier circuit below. Determine: a) Miller capacitance relevant to this circuit. ANSWER: b) Upper 3dB frequency (Hertz). ANSWER: c) Midband voltage gain. ANSWER: d) Sketch Bode plots of the voltage gain magnitude and phase (provide clear plots). 9V Circuit: RS1.2KR Ri=2kk ->0 SRO=100kr Cas=10 o F & Ro=1ks - Kp=2mA/uz VTP--2 V - 0.01 V-
Determine DC gain and crossover frequency from the following Bode plots. Magnitude (dB) Phase (deg) -180 10-1 100 103 10 Frequency (rad/s) DC gain = 10.8, cr = 1.2 rad/s DC gain = 2.5, wc = 4.2 rad/s DC gain = 5.0 dB, -2.5 rad/s • DC gain = 1.8 dB, -2.1 rad/
I have a CS amplifier and I have to find the upper 3dB frequency
using the method of open-circuit constants with given values.
VDD VDD 10V R3 12k R1 >600k 1uF 2N7000* 1uF SRL 10k + Vs ( 0.1 Vpk 1kHz R2 > 450k R4 50 03 10uF Fig. 1. CS Amplifier: schematic For the circuit of the figure, determine the upper 3dB frequency fu analytically using the method of open-circuit constants (e.g., text-book, pp. 733-736, Sec. 9.4.3-4.). Use the...
1. The common source amplfier shown below uses a dc-coupled input and the load capacitance has been removed. Assume that the high-frequency cutoff (-3dB) frequency f. is determined chiefly by R and the total input capacitance, which consists of Cg in parallel with the Miller effect capacitance reflected nto the input. Calculate and show the M coupling and bypass capacitors shown in the circuit can be treated as short-cicuits t capacitance, then estimate fs For this analysis, the R 10k...
3. The non-inverting amplifier below has a gain that depends on frequency. Determine the magnitude of the voltage gain at (a) "signal frequencies" when the capacitor may be treated as a short, (b) DC, when the capacitor may be treated as an open, and (c) at any frequency, with a formula for the gain as a function of R1, R2 and C1. Choose part values to make the amp have a gain of 20dB at signal frequencies that drops to...
1. (20 points). A transfer function has the following zeros and poles: zero at s=-105 and s= poles at s-100 and s--1000. The magnitude of the transfer function at ω= 105 rad/s is equal 100. Find the transfer function T(s) and sketch Bode plots for the magnitude and phase, ˇ
1. (20 points). A transfer function has the following zeros and poles: zero at s=-105 and s= poles at s-100 and s--1000. The magnitude of the transfer function at ω=...
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