Electronics Fundamentals: Circuits, Devices & Applications
8th Edition
ISBN: 9780135072950
Author: Thomas L. Floyd, David Buchla
Publisher: Prentice Hall
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Textbook Question
Chapter 18, Problem 24P
Repeat Problem 23 for each circuit in Figure 18-46.
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Chapter 18 Solutions
Electronics Fundamentals: Circuits, Devices & Applications
Ch. 18 - When a diff-amp has identical signals on both...Ch. 18 - A high CMRR for a diff-amp means the common-mode...Ch. 18 - Prob. 3TFQCh. 18 - The open-loop voltage gain of an op-amp is also...Ch. 18 - Prob. 5TFQCh. 18 - Prob. 6TFQCh. 18 - In a voltage-follower, the open-loop and...Ch. 18 - Prob. 8TFQCh. 18 - Prob. 9TFQCh. 18 - If the feedback resistor in an amplifier is open,...
Ch. 18 - Which characteristic docs not necessarily apply to...Ch. 18 - In selecting an op-amp. suppose you have several...Ch. 18 - Prob. 3STCh. 18 - Prob. 4STCh. 18 - Prob. 5STCh. 18 - Prob. 6STCh. 18 - Prob. 7STCh. 18 - Prob. 8STCh. 18 - If you know an op-amp's open-loop gain and nothing...Ch. 18 - Prob. 10STCh. 18 - Prob. 11STCh. 18 - The highest possible input resistance is achieved...Ch. 18 - Compare a practical op-amp to an ideal op-amp.Ch. 18 - Two IC op-amps are available to you. Their...Ch. 18 - Identify the type of input and output...Ch. 18 - Prob. 4PCh. 18 - A certain diff-amp has a differential gain of 60...Ch. 18 - A certain diff-amp has a CMRR of 65 dB. If the...Ch. 18 - Identify the type of input mode for each op-amp in...Ch. 18 - Show the common-mode input in Figure 18-37 in an...Ch. 18 - Determine the bias current, IBIAS, given that the...Ch. 18 - Distinguish between input bias current and input...Ch. 18 - A certain op-amp has a CMRR of 250,000. Convert...Ch. 18 - The open-loop gain of a certain op-amp is 175,000....Ch. 18 - The op-amp data sheet specifies a CMRR of 300,000...Ch. 18 - Figure 18-38 shows the output voltage of an op-amp...Ch. 18 - How long does it take the output voltage of an...Ch. 18 - Identify each of the op-amp configurations in...Ch. 18 - For the amplifier in Figure 18-40. determine the...Ch. 18 - Determine the closed-loop gain of each amplifier...Ch. 18 - Find the value of Rf that will produce the...Ch. 18 - Find the gain of each in amplifier in Figure...Ch. 18 - If a signal voltage of 10 mV applied to each...Ch. 18 - Determine the approximate values for each of the...Ch. 18 - Determine the input and output resistances for...Ch. 18 - Repeat Problem 23 for each circuit in Figure...Ch. 18 - Repeat Problem 23 for each circuit in Figure...Ch. 18 - Prob. 26PCh. 18 - Prob. 28PCh. 18 - Prob. 29PCh. 18 - Prob. 30PCh. 18 - Prob. 31PCh. 18 - Prob. 32P
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- summing amplifierarrow_forwardAn amplifier has an open loop gain of the value equal to your roll no. Determine the gain when 0.75 % of negative feedback is introduced.arrow_forward77.One condition for positive feedback is that the phase shift around the feedback loop must be _______°. 76.In order to start up, a feedback oscillator requires A. positive feedback greater than 1. B. unity feedback equal to 1. C. no feedback. D. negative feedback less than 1. 75.A circuit that can change the frequency of oscillation with an application of a dc voltage is sometimes called A. an astable multivibrator. B. a voltage-controlled oscillator. C. a crystal oscillator D. a Hartley oscillator 74.Which of the following is required for oscillation? A. The phase shift around the feedback network must be 180º B. None of the above C. ßA > 1 D. Both ßA > 1 and the phase shift around the feedback network must be 180º.arrow_forward
- What is the difference between synchronous and asynchronous input to 0-9 and 0-5 counters?arrow_forwardThe return ratio for a circuit is 220. What is the amount of feedback, correct up to 2 decimal places?arrow_forwardAn amplifier has an open loop gain of the value equal to 1. Determine the gain when 0.5 % of negative feedback is introduced.arrow_forward
- 1. Create a circuit diagram on PHASE SHIFT KEYING 2. Create a circuit diagram on BINARY SHIFT KEYINGarrow_forwardFeedback system is used toSelect one: a. Cancel use of temperature gradientb. To reduce delay in measurementO c. To improve accuracyd. None of the mentionedarrow_forwardThe closed loop unity feedback system with the forward transfer function G(s) = K(s+2)/[s(s-1) (s+3)] is stable for k: Select one: a. Less than 500 c. Less than 50 d. Less than 500 and greater than 50 e. Greater than 500arrow_forward
- Compared to circuit without feedback, the output impedance in current shunt circuit is A.unpredictable B.not related at all C.similar D.larger E.dependiing on frequency F.smallerarrow_forwardIf the voltage gain of the amplifier section of a certain oscillator is equal to 100, what is the required attenuation of the feedback?A. 1B. 0.1C. 50D. 0.99arrow_forward1. Consider the unity feedback system given below The system will be stable fora) K >-2 b) -3 < K < 0 c) K < -2 d) -3 < K < -2arrow_forward
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