Electrical Engineering: Principles & Applications (7th Edition)
7th Edition
ISBN: 9780134484143
Author: Allan R. Hambley
Publisher: PEARSON
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Find the expression for the open loop gain Rm (=Output voltage/Input current). Get the expression for Ro,cl (closed loop output resistance).
a) Obtain the open-loop transfer function.
Go to page: 12 he closed-loop transfer function..
c) Find the value of gain and closed-loop poles at the imaginary axis crossing:...
d) Write the range of k for which the closed system is stable.......…..
e) Write the value of k that makes the system marginally stable:...
f) What would be the period of oscillation.
g) Find %OS, Tp, Ts, atk = 15.
h) Find the steady-state errors when the input is r(t)= 0.62 u(t) step at k=15:..
H(s)G(s):
k
(s + 7)(s +1-j)(s +1+j)
B- Design a floating current-to-voltage converter that will convert a 4-to20 mA current
signal into 0-to 10 V ground-referenced voltage signal. Let the Gain is 5 and feedback
resistor (R) is 20 KN.
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- What is a typical value of open-loop, low-frequency gain of an op-arop circuit? How does this compare to the ideal value?arrow_forwardWhat is the importance of TRANSFER FUNCTION in Feedback and contol system. Please discuss.arrow_forwardCompare inverting and non-inverting amplifier. Also, calculate the closed-loop gain of the circuit diagram given belowarrow_forward
- 3. Inverting Amplifier is a normal OP-Amp in which the output is given as feedback with a feedback resistor. i. Draw a circuit diagram for the inverting amplifier. Derived the expression for the closed loop gain for the inverting amplifier. iii. In an inverting amplifier input resistance (R1) =2.2 k2 and feedback resistance 220kN. Calculate the closed loop gain for the inverting amplifier.arrow_forwarda. With the aid of a diagram, differentiate, open-loop gain, loop gain, and closedloop gain.arrow_forwardSuppose that we are designing an amplifier, using an op amp. What problems are associated with using very small feedback resistances? With very large feedback resistances?arrow_forward
- Assume for a moment that perfectly accurate resistors were available for feedback networks; that is resistor tolerance is 0%. Then any deviation from the value set by the feedback resistor ratio is caused by insufficient raw op-amp gain. What minimum raw gain would be needed to get within 1% if an intended overall gain of 10? What if the intended gain is 100 instead?arrow_forwarde. f. a. An ideal feedback amplifier is given as block diagram. According to feedback topology do the required calculations and fill the blanks. Show your calculation steps as well. b. C. The type of feedback applied to this circuit is Forward direction transfer function is Feedback transfer function is d. Value of open loop gain of the amplifier is. Value of feedback loop gain of the amplifier is.. 1 Considering that V₁ = 100mV; V=99mV; V, = 5V. Show all the required calculations. Value of closed loop gain of the amplifier is ... amplification. ..amplification. ..(Calculate and write with unit) ..(Calculate and write with unit) ..(Calculate and write with unit)arrow_forwardA What does negative feedback mean? Explain the effect of negative feedback on amplifier circuits? gain and bandwidth ofarrow_forward
- (A) Draw and clearly label the circuit diagram of an op-amp configured as a practical inverting differentiator circuit. (B) For the op-amp in part (A), explain how the DC-offset volatge is reduced at the output? (C) Calculate the feedback resistance Rf and the input reistance R, in a practical diffrentiator if fo =1 kHz and a high-frequency gain of 15 is required. Choose a capacitor of 1µF.arrow_forwardConsider the op-amp circuit to the right. Write a general formula for Vout as a function of Vin and the parameters of the resistor and MOSFET. Make sure to pay attention to the orientation of the MOSFET, you may assume an ideal op-amp. Vin R1 om + Q1 Voutarrow_forwardExplain how to use virtual ground concept in the analysis of op-amps.arrow_forward
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