(a) Describe briefly the two conditions of the Barkhausen criterion that must be met for oscillation to occur in oscillator circuit.
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- 1. Give the formula for the frequency of oscillations in the Wein Bridge Oscillator circuit? 2. What is the condition for the Wien Bridge oscillator to generate oscillations? 3. What is the total phase shift provided by the Wein Bridge oscillator? 4. What is the function of the lead-lag network in the Wein Bridge oscillator? 5. Which type of feedback is used in the Wein Bridge oscillator 6. What is the gain of the Wein Bridge oscillator? 7. What are the applications of the Wein Bridge oscillator? 8. What is the condition for generating oscillations? 9. What is the difference between damped oscillations undamped oscillations? 10. Wein Bridge oscillator is either LC or RC oscillator. 11. What are the drawbacks in using Wein Bridge Oscillators?Figure Q3(b) shows a phase shift oscillator circuit. Given the feedback gain:i Determine an equation for frequency of oscillationii Calculate the value of capacitors, C, if the output voltage is equal to5 sin 3?? ?? and resistor, R is equal to 100 ??Ω.iii Calculate the open-loop gain, A, in order to generate an oscillating signal.iv Determine the value for ??1and ??2 in order to generate an oscillatingsignal. You may refer to the Appendix in page 5 and 6 for the commercialvalue of resistor.4. What is the function of the lead-lag network in the Wein Bridge oscillator? 5. Which type of feedback is used in the Wein Bridge oscillator 6. What is the gain of the Wein Bridge oscillator? 7. What are the applications of the Wein Bridge oscillator? 8. What is the condition for generating oscillations? 9. What is the difference between damped oscillations undamped oscillations? 10. Wein Bridge oscillator is either LC or RC oscillator. 11. What are the drawbacks in using Wein Bridge Oscillators?
- 1. determine the oscillator frequency 2. If R1, R2, and R3 are changed to 8.2 kΩ while retaining the capacitors, what value must Rf be for oscillation? 3. Calculate the voltage gain of the amplifier section 4. Determine the attenuation of the feedback section 5. What value of Rf necessary for the circuit to operate as an oscillator?Why would an oscillator of the closed-loop model be expected toprovide a more stable rhythmic output than one employing thehalf-center model?Routh Hurwitz analysis of closed loop system with variable gain.
- Figure 3 shows a Hartley oscillator. Assume that the op-amp employed in the figure is an ideal op-amp, and R1= 20 kΩ, R2 = 60 kΩ, L1=10 mH. b) State the Barkhausen criterion for sustained oscillation.c) Explain briefly how the phase shift requirement for sustained oscillation ismet in the circuit of Figure 3.d) The feedback ratio and oscillation frequency of Figure 3 are givenrespectively by, B = -L2/L1 and w0 = 1 / sqrt(L1 +L2)C Determine the values of C and L2 in order for the circuit to oscillate at a frequency of 200 Hz.2. Select ONE (1) transducer or sensor with available in the market, with providing the brand, model and technical specification of the selected transducer or sensor, you are required to i. Explain its designed measurand and the working range. ii. Explain its basic working principles and any steps required to take in order to avoid any error (ex. Loading error) during measurement process. iii. Identify either the selected transducer or sensor required a signal conditioner. iv. Propose ONE (1) cable with is suitable to be connected with the selected transducer or sensorIn a short essay of fewer than 500 words, explain the oscillator design procedure. Please explain in terms of amplifier type selection, amplifier design, resonator design, linear oscillator analysis, and Nonlinear Oscillator Analysis. Thanks.
- 1. For the Wien-Bridge oscillator, determine the oscillator frequency, fout 2. Find the voltage gain of the amplifier section. 3. Find the attenuation of the feedback section, BGive the different types of RC feedback oscillator and briefly discuss each7. What are the applications of the Wein Bridge oscillator? 8. What is the condition for generating oscillations? 9. What is the difference between damped oscillations undamped oscillations? 10. Wein Bridge oscillator is either LC or RC oscillator. 11. What are the drawbacks in using Wein Bridge Oscillators?