Basic Engineering Circuit Analysis
11th Edition
ISBN: 9781118539293
Author: J. David Irwin, R. Mark Nelms
Publisher: WILEY
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Chapter 4, Problem 37P
Determine the output voltage, of the noninverting averaging circuit shown in Fig. P4.37.
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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.
(H4-02) Fixed-Bias And Emitter-Bias Configuration. (BJT Configurations, BJT DC Biasing). (Course: Electronic Devices and Circuit Theory).
-Use Equation Operators or write it down on paper/digital paper.
-Redraw and Apply.
-You can add //comments for a better understanding.
-Please answer without abbreviation.
-Make it clean and clear typing/writing.
Thank you.
(H4-04) Fixed-Bias And Emitter-Bias Configuration. (BJT Configurations, BJT DC Biasing). (Course: Electronic Devices and Circuit Theory).
-Use Equation Operators or write it down on paper/digital paper.
-Redraw and Apply.
-You can add //comments for a better understanding.
-Please answer without abbreviation.
-Make it clean and clear typing/writing.
Thank you.
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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- (H4-01) Fixed-Bias And Emitter-Bias Configuration. (BJT Configurations, BJT DC Biasing). (Course: Electronic Devices and Circuit Theory). -Use Equation Operators or write it down on paper/digital paper. -Redraw and Apply. -You can add //comments for a better understanding. -Please answer without abbreviation. -Make it clean and clear typing/writing. Thank you.arrow_forwardOp Amp Characteristics (assume non-ideal)The op-amp circuit shown in Fig. P4.8 has a constant dcvoltage of 6 V at the noninverting input. The inverting input isthe sum of two voltage sources consisting of a 6 V dc source anda small time-varying signal us.(a) Use the op-amp equivalent-circuit model given in Fig. 4-6 todevelop an expression for uo.(b) Simplify the expression by applying the ideal op-amp model,which lets A→¥, Ri →¥, and Ro →0.arrow_forwardFor the amplifier in Fig. P4.15, find the gain (R1=3.5 kQ, R2=27 KQ) 2 VS R₂ R₁ -OVarrow_forward
- 4. ( Determine the output C using signal flow graph. Show step-by-step solution and equivalent signal flow graph in each step. Show step by step and complete solution. R G₁ H₁ G₂ H₂arrow_forwardFigure QI shows the circuit diagram of a "Logarithmic Amplifier". In this circuit the feedback resistor of a normal inverting amplifier is replaced by a silicon diode. Since the current flowing through the diode increases exponentially with the voltage across the diode, the voltage across the diode will be proportional to the logarithm current flowing through it. Hence the output of the circuit is proportional to the logarithm of the input voltage. QI DI RIN Al Figure QI The current flowing through a diode is given by the Shock' y Diode Equat n: 1,=1, (e" =1) where , is the current flowing through the diode g is the charge on the electron (given at the back of the examination sheet) V, is the voltage across the diode K, is Boltzmann's constant (given at the back of the examination sheet) Tis room temperature (given at the back of the examination sheet) Given that /,> 1, an approximate expression for V, as a function of I, is Continued overleaf Page 2 of 9 QI (a) 0) Neglecting any input…arrow_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
- P4.8 Extreme temperature changes result in many failures of electronic circuits [1]. Temperature control feedback systems reduce the change of temperature by using a heater to overcome outdoor low temperatures. A block diagram of one system is shown in Figure P4.8 D. The effect of a drop in environmental temperature is a step decrease in Ta(s). The actual temperature of the electronic circuit is Y(s). The dynamics of the electronic circuit temperature change are represented by the transfer function. 200 G(s): s2 + 25s + 200 (a) Determine the sensitivity of the system to K. (b) Obtain the effect of the disturbance Ta(s) on the output Y(s). T(8) Heater control Electronic circuit + K R(s) G(s) Y(s) 0.1s + 1 Figure P4.8 Temperature control system.arrow_forward4.27 Design an op-amp circuit that performs an averaging operation of five inputs v₁ to v5.arrow_forwardQ4: 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_forward
- Please help with A,B and C. Also, please make it legible sometimes it's too small so it's blurry.arrow_forwardQ4) Consider the system shown in Figure Q3. This is a PID control of a second-order plant G(s). Assume that disturbances d(s) enter the system as shown in the diagram. It is assumed that the reference input F(s) is normally held constant, and the response characteristics to disturbances are a very important consideration in this system. d(s) F(s)- C(s) G(s) y(s) H(s) Figure Q3 1 K(as + 1)(bs + 1) G(s) C(s) = H(s) = 1 s² + 7s + 10' In the absence of the reference input i.e. F(s) = 0, derive the closed-loop transfer function between y(s) and d(s). a) b) The performance specification requires that the unit step disturbance response be such that the settling time be approximately half a second and the system has reasonable damping. We may interpret the specification as 3 = 0.8 and wn = 8 for the dominant closed-loop poles. We may choose the third pole at s = - 10 so that the effect of this real pole on the response is small. Derive the required characteristic polynomial that satisfies the…arrow_forwardQ4: Design a buck-boost converter to provide an output voltage 12V from a source that varies 'between 10V-16V. Given the load resistor is 10 ohm. assuming the frequency is 50 KHz and the output voltage ripple is 1.5% Specity: a. The duty ratio. b. The value of inductor. c. The value of capacitor. Note: Determine the values of inductor and capacitor with D1 only.arrow_forward
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