All Rights Reserved. The voltage at V A For the circuit shown below, obtain output waveform. This set of Linear Integrated Circuit Multiple Choice Questions & Answers (MCQs) focuses on “Voltage Limiter and Schmitt Trigger”. Statement for Linked Answer Questions (2 and 3): ... design at Schmitt trigger circuit shown below for high threshold voltage is 0.7 volt and low threshold voltage as 0.5 volt. Therefore  circuits  which can convert  a slow changing  waveform (long  rise  time)  in to  a  fast  changing  waveform (small  rise  time)  are required. 10. A Schmitt trigger is . 2. 28. Schmitt trigger converts any type of waveform into square waveform. The comparator gives out its output when the trigger input signal exceeds a particular value as set by the trigger level control. 3. Q-18 What do mean by a Schmitt trigger? b) 25 mv Scmitt Trigger circuit using NE 555. d) Cannot be determined View Answer, 4. Feb 22, 2011 #1 Hi guys. b) Voltage limiter d) -25 mv Electronic Circuits and Pulse Circuits Lab. 3. 65. Resistors (1kohms, 2.2Kohms, 330ohms                                                            -           1 No. I have a problem with an IR sensing photo-diode. 36) In PWM signal reception, the Schmitt trigger circuit is used. Viva Questions: 1. Schmitt Trigger Question. As shown in the fig. A Schmitt trigger circuit is also called a regenerative comparator circuit. Linear Integrated Circuit Questions and Answers – Voltage Limiter and Schmitt Trigger « Prev. What is the difference between a Binary and Schmitt Trigger? c) Comparator The Symmetrical Triggering uses only one trigger input to the input of any one transistor. Question: Answer The Following Questions Related To Schmitt Trigger Circuits. d) None of the mentioned Outcomes: After finishing this experiment students are able to Design Schmitt trigger circuit using transistor and they are able to find UTP and LTP. Ans:A Schmitt trigger is an emitter coupled binary. Determine the upper and lower threshold voltage Here you can see a list of all possible questions for Viva voce of Analog Communication. © 2011-2020 Sanfoundry. What is Schmitt Trigger? Compare these practical values with theoretical values. Inference: Schmitt trigger circuit with the given values is designed; and the response is observed. a) Combination of two zener diodes 1. a) Square waveform d) Combination of two rectifier diodes In Schmitt  trigger  circuit, the  output  is in one of  the two levels  namely  low  or  high. Study the procedure for conducting the experiment in the lab. Ans: The lower triggerinf point is defined as the input voltage at which the transistor Q2 just resumes conduction. CRO 0-20 MHz (Dual channel)                                               -           1No. A Schmitt trigger circuit has some hysteresis, which allows the designer to adjust the duty cycle by setting the size of the hysteresis window. What are the applications of Schmitt Trigger? 46 IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS-1:FUNDAMENTAL THEORY AND APPLICATIONS, VOL.41. 3. Write its expression. VIVA Questions: 1. 8085 Microprocessor Lab Viva Questions With Answers 1. Inference: Schmitt trigger circuit with the given values is designed; and the response is observed. View Answer, 9. It is an electronic circuit that adds hysteresis to the input-output transition threshold with the help of positive feedback. 2. Question Answer MCQ Exam ON : Vinegar And Citric Acid . Connect the circuit diagram as shown in circuit diagram. How noise can be eliminated on a given signal using Schmitt Trigger? Capacitor (0.1µF)                                                                    -           1 No. 6. In a sine wave or other simple waveform, this normally occurs twice during each cycle. 5. 7. 3. View Answer, 7. What are the circuits used to generate square wave? each. A comparator will converts sine wave to square but duty cycle can not be varied. Dammi. What are the applications of Schmitt Trigger? A Schmitt trigger exhibits hysteresis when loop gain is ___. Calculate the hysteresis voltage for the schmitt trigger from the given specification: Apply a sine wave input   of 15 Vp-p   amplitude and 1 KHz frequency to the circuit, 4. ANSWER: (a) To remove noise. compute the relation between R1 and Rf. Electrical Circuits viva questions and answers for freshers and experience top list of viva questions with answers interview questions and answers for EEE. 5. d) VO = 7.1v It is an active circuit which converts an analog input signal to a digital output signal. b) VO = 9.9v The circuit uses a potential divider formed by R1 and R2 to provide a positive DC feedback. 29. A Schmitt trigger is a _____. It can be implemented on several devices, however most commonly on the operational amplifier. What is a Schmitt trigger? Use the specification and obtain the output voltage swing for op-amp comparator. b) Voltage follower with positive feedback What happens if the threshold voltages are made longer than the noise voltages in schmitt trigger? What will be the output waveform, if the upper and lower threshold voltages are 0.25v? V1, the output changes to high level. A Schmitt trigger is form of comparator circuit that has hysteresis or different input switching levels to change the output between the two states. What are the applications of Schmitt Trigger? We need thorough preparation to answer the questions quickly and confidently . A basic op-amp circuit has a zener and rectifier diode connected in the feedback path. Now, Obtain the output voltage at which HIGH to LOW transition occurs and measure the. c) 50 mv It is a regenerative circuit that is used extensively in timing applications. 1. Thread starter Dammi; Start date Feb 22, 2011; Search Forums; New Posts; D. Thread Starter. In this section of Digital Logic Design - Digital Electronics - Sequential Circuits,Flip Flops And Multi-vibrators MCQs (Multiple Choice Questions and Answers),We have tried to cover the below lists of topics.All these MCQs will help you prepare for the various … I have to amplify the signal using a schmitt trigger. Ans: Schmitt trigger differs from binary in that the coupling from the outut of second stage to the input of first stage is missing and the feedback is obtained now through a common emitter resistance RE. 4. a) VUT = +14.63v, VLT= +14.63v In digital circuits fast waveforms are required  i.e, the circuit remain in the active region for a very short time (of the order of nano seconds) to eliminate the effects of noise or undesired parasitic oscillations  causing  malfunctions  of  the circuit. The circuit which performs  this operation is known as “Schmitt Trigger”. [ a] (a) counter (b) Voltage to frequency converter (c) Comparator (d) None of the above. 2) a comparator with three trigger points. Regulated Power supply 0-30 V (dual )                                               -           1 No. What is a Schmitt Trigger? a) Differential amplifier with positive feedback (c) For The Circuit Below, V_cc = V_H And -V_cc = V_L Are Set At Plusminus 5V. 2. 7. d) Eliminate false output transition 1. c) VUT = VLT= ±14.63v c) Sawtooth waveform The circuit shown in Fig. Which circuit converts irregularly shaped waveform to regular shaped waveforms? Inference: Schmitt trigger circuit with the given values is designed; and the response is observed. View Answer. c) VO = 4.7v Ans:A Schmitt trigger is an emitter coupled binary. The threshold voltages are made longer than the noise voltages in Schmitt trigger circuit has a zener and rectifier connected. Limit the output will be the output remains at its lower level till. And stay updated with latest contests, videos, internships and jobs of Merit HIGH. Following questions Related to Schmitt trigger b ) VO = 9.9v c ) VO 5.8v. Have a problem with an IR sensing photo-diode ans: the upper lower! None of the mentioned View Answer, 10 with Answers interview questions and Answers for EEE in an op- Schmitt! And LTP=1V LT represented by loop width is called UTP ( upper threshold point ) level of the.! Binary and Schmitt trigger circuit is also called a regenerative comparator ; Search Forums ; Posts... Of multivibrator noise can be input into a Schmitt trigger ” voltage of +5v, -5v and Vref=5v the to... Output will either be at +V sat or –V sat explain how Schmitt! Triggering uses only one trigger input signal to a square wave a comparator converts. Above the UTP ( V1 ) =V1 –VBE2 +V % u02641=V1-0.1 where (... Extensively in timing applications given signal using Schmitt trigger ( d ) None of the to! 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