Electric Circuits. (11th Edition)
11th Edition
ISBN: 9780134746968
Author: James W. Nilsson, Susan Riedel
Publisher: PEARSON
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Chapter 5, Problem 45P
a.
To determine
Find the Thevenin equivalent circuit for the given amplifier circuit using PSpice.
b.
To determine
Calculate the output resistance of the inverting amplifier.
c.
To determine
Find the resistance seen by the signal source
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6.7 Consider a baseband binary PAM system that transmits at 3600 bps with a bit
error rate less than 10-4. The channel introduces no distortion, but attenuates the
signal by 20 dB and has a bandwidth of 2.4 kHz. The channel noise is AWGN with a
power spectral density of 10-14 watts per Hertz (W/Hz). Design the optimum
transmitting and receiving filters, and determine the required transmit power.
6.10 In a baseband digital transmission, the bandwidth is 4 kHz, and the bit rate
must be at least 38.4 kbps. Assuming M-ary signaling, determine the range
of acceptable values of M, and the resulting bit error rate.
Assume a JFET device with VGS(0) = -1.3 and ipss = 20 mA. Design a self-biased
(Fig. 2) JFET common-source amplifier with the gain of -2 and a DC biasing that
allows the largest swing in ip. Note that you can choose Vcc to arrive at a desired
RD to meet the gain requirement. Since you are designing for a given gain, you
may have to check to see if JFET is biased correctly. (Hint: First find Rs for correct
VGs and then use the gain to compute RD. Finally, use RD and Rs to determine
Vec). Assume that the amplifier is to interface a source that expects a load of 50
2. Also, assume that the amplifier circuit is AC coupled at both ends with 3 dB
corner frequency of 15 kHz.
Chapter 5 Solutions
Electric Circuits. (11th Edition)
Ch. 5.2 - Assume that the op amp in the circuit shown is...Ch. 5.3 - The source voltage vs in the circuit in Assessment...Ch. 5.4 - Find vo in the circuit shown if va = 0.1 V and vb...Ch. 5.5 - Assume that the op amp in the circuit shown is...Ch. 5.6 - In the difference amplifier shown, vb = 4.0 V....Ch. 5.6 - Suppose the 12kΩ resistor Rd in the difference...Ch. 5.7 - The inverting amplifier in the circuit shown has...Ch. 5 - The op amp in the circuit in Fig. P5.1 is ideal....Ch. 5 - Replace the 2.5 V source in the circuit in Fig....Ch. 5 - Find io in the circuit in Fig. P5.3 if the op amp...
Ch. 5 - The op amp in the circuit in Fig. P5.4 is...Ch. 5 - The op amp in the circuit in Fig. P5.5 is ideal....Ch. 5 - Find iL (in milliamperes) in the circuit in Fig....Ch. 5 - Prob. 7PCh. 5 - Design an inverting amplifier with a gain of 2.5,...Ch. 5 - Design an inverting amplifier with a gain of 4....Ch. 5 - The op amp in the circuit in Fig. P5.10 is...Ch. 5 - The op amp in the circuit shown in Fig. P5.11 is...Ch. 5 - The op amp in Fig. P5.12 is ideal.
What circuit...Ch. 5 - Design an inverting-summing amplifier using a 120...Ch. 5 - Prob. 14PCh. 5 - Design an inverting-summing amplifier so...Ch. 5 - The op amp in Fig. P5.16 is ideal. Find vo if va –...Ch. 5 - Prob. 17PCh. 5 - The op amp in the circuit of Fig. P5.18 is...Ch. 5 - Prob. 19PCh. 5 - The op amp in the circuit shown in Fig. P5.20 is...Ch. 5 - Prob. 21PCh. 5 - Prob. 22PCh. 5 - The op amp in the circuit of Fig. P5.23 is...Ch. 5 - The circuit in Fig. P5.24 is a noninverting...Ch. 5 - The op amp in the circuit of Fig. P5.25 is...Ch. 5 - Prob. 26PCh. 5 - Prob. 27PCh. 5 - Prob. 28PCh. 5 - Prob. 29PCh. 5 - Select the values of Rb and Rf in the circuit in...Ch. 5 - The op amp in the adder-subtracter circuit shown...Ch. 5 - In the difference amplifier shown in Fig. P5.32,...Ch. 5 - Prob. 33PCh. 5 - The op amp in the circuit of Fig. P5.34 is...Ch. 5 - Assume that the ideal op amp in the circuit seen...Ch. 5 - Prob. 37PCh. 5 - Show that when the ideal op amp in Fig. P5.38 is...Ch. 5 - The op amps in the circuit in Fig. P5.39 are...Ch. 5 - The two op amps in the circuit in Fig. P5.40 are...Ch. 5 - The circuit inside the shaded area in Fig. P5.41...Ch. 5 - Assume that the ideal op amp in the circuit in...Ch. 5 - Derive Eq. 5.31.
(5.31)
Ch. 5 - Prob. 44PCh. 5 - Prob. 45PCh. 5 - Repeat Problem 5.45 assuming an ideal op...Ch. 5 - Assume the input resistance of the op amp in Fig....Ch. 5 - Prob. 48PCh. 5 - Suppose the strain gages in the bridge in Fig....Ch. 5 - For the circuit shown in Fig. P5.50, show that if...Ch. 5 - Prob. 51PCh. 5 - Prob. 52PCh. 5 - Prob. 53P
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- EXAMPLE 6.7 Consider an M-ary system with the number of symbols M=16, and the roll-off factor a= Discuss this M-ary system, vis-à-vis the corresponding binary system, for various scenarios. Solution 1arrow_forwardDesign an oscillator circuit using the arrangement in Fig. 4 (namely, find C+1=C+2). Fig. 4 shows that we are using a pair of 2N5485 JFET. However, you are supplied with two J112 (or J113) to be used here. Use datasheet for J112 (or J113) to determine the needed capacitances. The oscillation frequency is considered to be 1 MHz. Use L₁ = L₂ = 112 μH. Furthermore, assume Cr=200 pF and Re = 300 . Is the assumption Cf >> CGS&CGD valid?arrow_forward10pts: Matlab: From Problem 1 of homework 6, repeated below: Generate a random binary PAM transmit signal of -1 and + 1 volts of length 100. Simulate the transmit signal being sent over a channel with AWGN with an Eb/No of 3 dB. Plot the received signal constellation using a red o to represent when a logical 0 was sent and a blue * to represent a logical 1 was sent Question (1) Increase the Eb/No to 7 dB. Approximately what length of the signal do you need to get consistently within ~5% of the theoretical value for the bit error rate? a) Guess without doing any simulations b) Estimate by trial and observing the results.arrow_forward
- (1) A baseband PAM communication channel bandwidth is 100 KHz and has a noise power spectral density of 10^-9 W/Hz. The channel loss between the transmitter and receiver is 25dB. The application requires a bit rate of 500 Kbps and BER of less than 10^-5. The system uses raised cosine pulses with a roll-off factor of 0.25. Determine the minimum transmit power required. (2) Continuing problem 1. Everything for the previous problem stays the same BUT the best Power Amplifier you can afford has a maximum output power of 10 Watts. What will be estimated BER for the system?arrow_forwardExplain magnetic hysteresis and give examples of some calculationsarrow_forwardEXAMPLE 6.8 Suppose the samples of the nonideal received pulse are as follows: 0. m1 Design a three-tap ZF equalizer.arrow_forward
- Assume a JFET device with VGS(0) = -1.3 and ipss = 20 mA. Design a self-biased (Fig. 2) JFET common-source amplifier with the gain of -2 and a DC biasing that allows the largest swing in ip. Note that you can choose Vcc to arrive at a desired RD to meet the gain requirement. Since you are designing for a given gain, you may have to check to see if JFET is biased correctly. (Hint: First find Rs for correct VGs and then use the gain to compute RD. Finally, use RD and Rs to determine Vcc). Assume that the amplifier is to interface a source that expects a load of 50 . Also, assume that the amplifier circuit is AC coupled at both ends with 3 dB corner frequency of 15 kHz. Rearrange the circuit in step 1 to implement a common-drain amplifier. Do note that the output capacitor (C2) must be redesigned as the output impedance of common-drain is different from that of common-source amplifier. What is the actual gain? What is the input impedance?arrow_forwardAssume a JFET device with VGS(0) = -1.3 and ipss = 20 mA. Design a self-biased (Fig. 2) JFET common-source amplifier with the gain of -2 and a DC biasing that allows the largest swing in ip. Note that you can choose Vcc to arrive at a desired RD to meet the gain requirement. Since you are designing for a given gain, you may have to check to see if JFET is biased correctly. (Hint: First find Rs for correct VGs and then use the gain to compute RD. Finally, use RD and Rs to determine Vec). Assume that the amplifier is to interface a source that expects a load of 50 2. Also, assume that the amplifier circuit is AC coupled at both ends with 3 dB corner frequency of 15 kHz.arrow_forwardhelp on this question about induction motors?arrow_forward
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