Electronics Fundamentals: Circuits, Devices & Applications
8th Edition
ISBN: 9780135072950
Author: Thomas L. Floyd, David Buchla
Publisher: Prentice Hall
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Chapter 18, Problem 19P
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An amplifier has an open-circuit transresistance gain of 200 Ω, a short-circuit transconductance gain of 0.5 S, and a short-circuit current gain of 50. Determine the input resistance, the output resistance, and the open-circuit voltage gain.
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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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- An amplifier has an input resistance of 1 kΩ, an output resistance of 200 Ω, and a short-circuit transconductance gain of 0.5 S. Determine the open-circuit voltage gain, the shortcircuit current gain, and the open-circuit transresistance gain.arrow_forwardTable 1 shows the truth table of X D/A converter. Estimate the value of the input- and feedback- resistorsarrow_forwardDraw an operational amplifier voltage characteristic showing how the out Vo varies with the input (V2 — V3).arrow_forward
- Find the gain of non inverting amplifier if it has input voltage is 5V, input resistance of 20 ohm and feedback resistance of 40 ohm.arrow_forwardThe output of an amplifier is reduced by 2% when a negative feedback with β = 0.10 is added. The gain of the amplifier is -40. Determine the % change in the internal gain of the amplifier.arrow_forwardThe gain of an amplifier without feedback is 140. When negative feedback is applied, the gain becomes 17.5. Find the feedback factor.arrow_forward
- An inverting amplifier has a maximum output of ±5.1 V and an open-loop voltage gain of 105,229. The maximum possible differential input voltage (Vd) in μV is ?arrow_forward5. The mid band gain of an amplifier is 100 and the lower cutoff frequency is 1KHz. Find the gain of the amplifier at a frequency of 20 Hz.arrow_forwardAn amplifier has an input of 5mV p-p sine wave. Its output is 40mV p-p sine wave and inverted (with respect to the input). What is the gain of the amplifier?arrow_forward
- What is the output when the input voltageisless than, greater than, andequaltothe refence voltage?arrow_forwardA subtractor amplifier can properly subtract signals when The resistors are of any values The input voltages summed up. There is only one input voltage The values of the resistors are carefully chosen Which of the following is not true about non-inverting amplifier? The output voltage is phase shifted by 1800 with respect to the input. There is only one input to the non-inverting amplifier. The differential input voltage is equal to zero. The feedback resistor controls the gain. Which op-amp circuit is used to verify the signal strength that passes through a channel? Integrator Peak Detector Differentiator Precision Full-wave Rectifierarrow_forwardAn amplifier has a voltage gain of 20, an input resistance of 500 (and an output voltage of 50). The amplifier is connected to a voltage source that produces an output voltage of 1V and has an output resistance of 75 (and to a load resistance of 800). What will be the voltage across the load resistor?arrow_forward
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