Basic Engineering Circuit Analysis
11th Edition
ISBN: 9781118539293
Author: J. David Irwin, R. Mark Nelms
Publisher: WILEY
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Chapter 4, Problem 17P
Using the ideal op-amp assumptions, determine
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9
+
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.
find the gain
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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- (Q4.1) Determine the voltage gain G1=vO1/vS: (Q4.2) Determine the voltage gain G2=vO/vS:arrow_forward4.90 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.arrow_forward4.17 Using the ideal op-amp assumptions, determine I₁, I₂, and I3 in Fig. P4.17. 1 mA Figure P4.17 m R₁ 1₁ 13 12 ww R₂ Voarrow_forward
- By applying the two golden rules of ideal op-amp circuits, show that the closed-loop voltage gain of the amplifier circuit in Figure 4.1 is G = 1 + V. V R₁ R₂ Figure 4.1 R₁ R₂arrow_forwardparts 1,2 and 3 pleasearrow_forwardThe circuit is a current regulator utilizing an ideal op amp. (a) Find the current in theZener diode and the drain current in the NMOStransistor if the Zener voltage is 6.8 V. (b) Whatis the op amp output voltage if the MOSFET hasVTN = 1.25 V and Kn = 75 mA/V2?arrow_forward
- By applying the two golden rules of ideal op-amp circuits, show that the closed-loop voltage gain of the amplifier circuit in Figure 4.1 is G = 1 + V₂ V R₁ R₂ Figure 4.1 R₁ R₂arrow_forward7arrow_forwardThe 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_forward
- Q 1) For the given circuit shown in Figure 4.1: (i) Provide the name for this op-amp circuit configuration and use the ideal op-amp assumptions to solve for the output voltage in terms of the input voltages and resistors. (ii) What is the input resistance seen by ?0, V1 and V2. ?arrow_forwardOBJECTIVE 4-1 LINEAR ACTIVE CIRCUITS (SECTS. 4-1, AND 4-2) Given a linear resistance circuit containing dependent sources, find selected output signals, input-output relationships, or input-output resistances. See Examples 4-1 to 4-11 and Exercises 4-1 to 4-14. 4- Find the voltage gain vo/0s and current gain ilm Fige P4-1 for r=15 km2. VS 100 2 300 $2 FIGURE P4-1 250 Ω ww 1+ ri, 1 kovo 4-2 Find the voltage gain vo/v₁ and the current gain in/is in the voltage gain vo/us in Figure P4-4. Vs VX Vs Rp W Rs w FIGURE P4-4 4-5 Find an expression for the current gain io/is in Figure P4-5. SS io E FIGURE P4-5 RK W -0 ριξ να H₂VY PIE Rcarrow_forward4Darrow_forward
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