Basic Engineering Circuit Analysis
11th Edition
ISBN: 9781118539293
Author: J. David Irwin, R. Mark Nelms
Publisher: WILEY
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Textbook Question
Chapter 4, Problem 13P
Assuming an ideal op-amp in Fig. P4.13, determine the output voltage
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9
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R₂
2
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R₁
Figure Q4.b(ii)
1) Draw the compete circuit with the op-amp included.
2) Obtain equations for the contribution made by each of the bias current sources
IBp, IBn and the voltage offset source Vos to the output voltage Vo.
3) Suggest how the value chosen for R3 will be related to R₁ and R₂.
Problem 4.17: You have access to resistors with values 1 k2, 1.5 kn, and 5.0 k2.
You have a voltage signal from a transducer with a maximum voltage of 0.2 V. Using a
noninverting op amp configuration, what maximum output voltages could you provide
with the combinations of these resistors? Sketch your op amp circuit options.
4.90 A reverse-biased photodiode is specified to have a dark current of 100 pA and a responsivity of 0.5 A/W. It is
connected to the transresistance amplifier shown in Fig. P4.90. Assume an ideal op amp.
(a) What is the reverse-bias voltage across the photodiode?
(b) What is the output voltage vo with no illumination?
(c) What is the output voltage vo with 10 µW of light incident on the photodiode?
250 kN
On o
+3 V.
Figure P4.90
Hint: since we are assuming an ideal op amp, there is a virtual short-circuit between
input terminals.
Chapter 4 Solutions
Basic Engineering Circuit Analysis
Ch. 4 - An amplifier has a gain of 15 and the input...Ch. 4 - An amplifier has a gain of 5 and the output...Ch. 4 - An op-amp based amplifier has supply voltages of...Ch. 4 - For an ideal op-amp, the voltage gain and input...Ch. 4 - Revisit your answers in Problem 4.4 under the...Ch. 4 - Revisit the exact analysis of the inverting...Ch. 4 - Revisit the exact analysis of the inverting...Ch. 4 - An op-amp based amplifier has 18V supplies and a...Ch. 4 - Assuming an ideal op-amp, determine the voltage...Ch. 4 - Assuming an ideal op-amp, determine the voltage...
Ch. 4 - Assuming an ideal op-amp in Fig. P4.11, determine...Ch. 4 - Assuming an ideal op-amp, find the voltage gain of...Ch. 4 - Assuming an ideal op-amp in Fig. P4.13, determine...Ch. 4 - Determine the gain of the amplifier in Fig. P4.14....Ch. 4 - For the amplifier in Fig. P4.15, find the gain and...Ch. 4 - Using the ideal op-amp assumptions, determine the...Ch. 4 - Using the ideal op-amp assumptions, determine...Ch. 4 - In a useful application, the amplifier drives a...Ch. 4 - The op-amp in the amplifier in Fig. P4.19 operates...Ch. 4 - For the amplifier in Fig. P4.20, the maximum value...Ch. 4 - For the circuit in Fig. P4.21, (a) find Vo in...Ch. 4 - Find Vo in the circuit in Fig. P4.22, assuming...Ch. 4 - The network in Fig. P4.23 is a current-to-voltage...Ch. 4 - Prob. 24PCh. 4 - Determine the relationship between v1 and io in...Ch. 4 - Find Vo in the network in Fig. P4.26 and explain...Ch. 4 - Determine the expression for vo in the network in...Ch. 4 - Show that the output of the circuit in Fig. P4.28...Ch. 4 - Find vo in the network in Fig. P4.29.Ch. 4 - Find the voltage gain of the op-amp circuit shown...Ch. 4 - Determine the relationship between and in the...Ch. 4 - Prob. 32PCh. 4 - For the circuit in Fig. P4.33, find the value of...Ch. 4 - Find Vo in the circuit in Fig. P4.34.Ch. 4 - Find Vo in the circuit in Fig. P4.35.Ch. 4 - Determine the expression for the output voltage,...Ch. 4 - Determine the output voltage, of the noninverting...Ch. 4 - Find the input/output relationship for the current...Ch. 4 - Find V0 in the circuit in Fig. P4.39.Ch. 4 - Find Vo in the circuit in Fig. P4.40.Ch. 4 - Find the expression for in the differential...Ch. 4 - Find vo in the circuit in Fig. P4.42.Ch. 4 - Find the output voltage, vo, in the circuit in...Ch. 4 - The electronic ammeter in Example 4.7 has been...Ch. 4 - Given the summing amplifier shown in Fig. 4PFE-l,...Ch. 4 - Determine the output voltage V0 of the summing...Ch. 4 - What is the output voltage V0 in Fig. 4PFE-3. a....Ch. 4 - What value of Rf in the op-amp circuit of Fig....Ch. 4 - What is the voltage Vo in the circuit in Fig....
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Similar questions
- The circuit shown in Fig. 4 provides transfer characteristics with +7.5 V levels at the output vo. When v 0 V, a current of 0.5 mA flows in the feedback resistor (R2) and a current of 1.0 mA flows through the zener-diodes. Assume that the output saturation levels of the op-amp are ±12.0 V, the forward-drop voltage of the zener-diode is 0.7 V, and the value of R, is equal to R2. a) Specify the zener-voltages of the zener diodes. b) Find the values of all resistors. R2 R1 R Z Z, Fig. 4arrow_forwardSubject : Electronics Engineering Draw circuits for both inverting and non-inverting amplifier using op-amp. Derive the expression for the gain of an inverting amplifierarrow_forward[Q4A] Design a circuit based on op-amp of 30 mA output which used to drive five LEDs each one need 20 mA to work and ensure the LEDs (ON) even if one of LEDs broken or damage. Then explain why you chosen this circuit and how this circuit works.arrow_forward
- Q4: Consider the uA741C-based op-amp amplifier circuit shown below; The input voltage, Vi, is 2.5 volts. R2 is 5,000 ohms and RI is 1,000 ohms : R2 vo • What is the name of the circuit? • What is the value of the voltage at the negative input of the op-amp? • What is the value of the current through the 1 k2 resistor, in?arrow_forward7arrow_forwardOP AMPS DO( NEED NEAT HANDWRITTEN SOLUTION ONLY OTHERWISE DOWNVOTE).arrow_forward
- Help on this pleasearrow_forward[Q4A] Design a circuit based on op-amp of 30 mA output which used to drive five LEDs each one need 20 mA to work and ensure the LEDs (ON) even if one of LEDs broken or damage. Then explain why you chosen this circuit and how this circuit works. (8 points)arrow_forwardfind the gainarrow_forward
- Please show workarrow_forward+15 V V. Ideally, when the two input terminals of an op-amp are shorted together (creating a condition of zerc differential voltage), and those two inputs are connected directly to ground (creating a condition of zero common-mode voltage), what should this op-amp's output voltage be? In reality, the output voltage of an op-amp under these conditions is not the same as what would be ideally predicted. Identify the fundamental problem in real op-amps, and also identify the best solution.arrow_forward(Q4.1) Determine the voltage gain G1=vO1/vS: (Q4.2) Determine the voltage gain G2=vO/vS:arrow_forward
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