b) Combination of zener and rectifier diode Electronic Circuits and Pulse Circuits Lab. c) Reduce the transition effect How noise can be eliminated on a given signal using Schmitt Trigger? Here you can see a list of all possible questions for Viva voce of Analog Communication. Write its expression. 29. b) Enhance the output signal c) Comparator with positive feedback c) VUT = VLT= ±14.63v In this way, a Schmitt trigger operates like a high-gain amplifier that always runs at saturation. The circuit uses a potential divider formed by R1 and R2 to provide a positive DC feedback. Transistor (BC 107) - 2 No. What are the applications of Schmitt Trigger? Define UTP? These are classified into two types namely inverting Schmitt trigger and non inverting Schmitt trigger.The inverting Schmitt trigger can be defined as an element of output is connected to the positive terminal of the operational amplifier.Similarly, the noninverting amplifier can be defined as the input signal is given at the negative terminal of the operational amplifier. a) VUT = +14.63v, VLT= +14.63v below, the feedback voltage is V a.The input voltage is applied to the inverting terminal and the feedback voltage is applied to the non-inverting terminal. What is amplitude modulation? The level of the output changes V1 is always greater than V2.The differences of these two voltages is known as “Hysteresis”. As shown in the fig. corresponding input voltage. a) Differential amplifier with positive feedback Ans There are two types Schmitt trigger are used. When the input voltage is raising above the UTP (upper threshold point) i.e. Hysteresis here means it provides two different threshold voltage levels for rising and falling edge. What is the difference between a Binary and Schmitt Trigger? What are the advantages of a Schmitt trigger? 28. In Schmitt trigger circuit, the output is in one of the two levels namely low or high. Electrical Circuits viva questions and answers for freshers and experience top list of viva questions with answers interview questions and answers for EEE. Apply a sine wave input of 15 Vp-p amplitude and 1 KHz frequency to the circuit, 4. d) Combination of two rectifier diodes This set of Linear Integrated Circuit Multiple Choice Questions & Answers (MCQs) focuses on “Voltage Limiter and Schmitt Trigger”. What will be the output waveform, if the upper and lower threshold voltages are 0.25v? The voltage required to drive the transistor Q1 from ON to OFF is called lower trigger point. a. Preparing for Viva voce is a bit challenging since one can't predict the questions the examiner will ask. Inference: Schmitt trigger circuit with the given values is designed; and the response is observed. 37) In Pulse Position Modulation, the drawbacks are. Schmitt trigger converts any type of waveform into square waveform. 3. 1) a comparator with only one trigger point. Explain how a Schmitt Trigger converts a sine wave to a square wave? Also if the rise time of the input waveform is long, it requires a large coupling capacitor. Description. Ans:If a sine wave of amplitude larger than the UTP is fed to a Schmitt trigger, whenever the input rises to V1, the output jumps to V1 and remains at its upper level V1 till the input falls to V2. 2. Dammi. Regulated Power supply 0-30 V (dual ) - 1 No. 3. A noisy signal can be input into a Schmitt trigger and the output will be a clean digital signal. ... What is the type of feedback used in an op- amp Schmitt trigger? 6. Compare these practical values with theoretical values. Next » This set of Linear Integrated Circuit Multiple Choice Questions & Answers (MCQs) focuses on “Voltage Limiter and Schmitt Trigger”. A Schmitt trigger is . Ans: The zero-crossing is the instantaneous point of the wave form at which the voltage value is zero. The voltage at V A c) All of the mentioned A Schmitt trigger (Figure 3.5) is a certain type of logic gate input which is designed to ‘clean up’ a corrupted logic signal.It has two input thresholds, with the ‘positive-going’ higher than the ‘negative-going’. 92. The Symmetrical Triggering uses only one trigger input to the input of any one transistor. 5. 1.Design Schmitt trigger circuit to get UTP=5V and LTP=7V for VCC=15V. c) Comparator In which configuration a dead band condition occurs in schmitt trigger What are the important CPU registers in the 8085 microprocessor? Inverting Schmitt trigger. © 2011-2020 Sanfoundry. VIVA Questions: 1. The voltage required to drive the transistor Q1 from OFF to ON is called upper trigger point. I have to amplify the signal using a schmitt trigger. 1. It has two states either stable or quasi-stable depending on the type of multivibrator. B. View Answer, 10. d) None of the mentioned 1. 1. Which circuit converts irregularly shaped waveform to regular shaped waveforms? To produce ramp signal c. For synchronization d. None of the above. Therefore circuits which can convert a slow changing waveform (long rise time) in to a fast changing waveform (small rise time) are required. 1. How noise can be eliminated on a given signal using Schmitt Trigger? What is a Schmitt Trigger? What are the applications of Schmitt Trigger? What is Schmitt Trigger? Function generator 0- 1MHz - 1No. To design the circuit of Schmitt trigger with UTP=2.2V and LTP=1V. 1. c) 50 mv a) 0 mv A. Determine the upper and lower threshold voltage 2. What is Schmitt Trigger? A Schmitt trigger circuit is also called a regenerative comparator circuit. Schmitt Trigger Circuit. a) Combination of two zener diodes View Answer, 9. Tweet ... Bitable multivibrator (c ) Schmitt trigger (d) None of the above. To practice all areas of Linear Integrated Circuits, here is complete set of 1000+ Multiple Choice Questions and Answers. A Schmitt trigger circuit has some hysteresis, which allows the designer to adjust the duty cycle by setting the size of the hysteresis window. Describe A Comparator. 7. What is a Schmitt trigger? Q-18 What do mean by a Schmitt trigger? Specification: R= 1kΩ; RL=10kΩ; VZ=6v; VSat=±15v (Assume forward bias of zener = 0.7v). This input voltage is called LTP (Lower threshold point). Ans: Schmitt Trigger is called squaring circuit because irrespective of inut signal it produces. b) Voltage follower with positive feedback 2) a comparator with three trigger points. THEORY: Schmitt Trigger is also known as Regenerative Comparator. A Schmitt trigger exhibits hysteresis when loop gain is ___. LTP = V2= VBE(active)+ (V1-V?2) .Re/(aRcth+Re), Where Rcth =(RC1(R1+R2))/( R1+R2+RC1) a =R2/(R1+R2), Set UTP = V1 — 0.1 then 2.2= V1 — 0.1 then V1= 2.3V, But V1= (12X15)/(2.2+1.5+RC1) RC1= 4.12Kohms = 4Kohms, Rcth = (4X 103(2.2+1.5))/(2.1+1.2+4.4K) = 1.97Kohms, LTP =V2= VBE(active)+ (V1-V?2) .Re/(aRcth+Re), IB2= VE/RE(1+hfe) = 1.6/330(1+200) = 0.0030A, (VC-output)/IC2 = RC2 ---------> (12-1)/0.6 = RC2= 18.33%u2126. What is monostable multivibrator? Ans: The lower triggerinf point is defined as the input voltage at which the transistor Q2 just resumes conduction. 2. Describe What A Schmitt Trigger Circuit Is And Discuss Its Advantage Over The Comparator. View Answer, 3. 7. d) None of the mentioned b) Pulse waveform View Answer, 5. a) Square waveform Now, Obtain the output voltage at which HIGH to LOW transition occurs and measure the.
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