Therefore circuits which can convert a slow changing waveform (long rise time) in to a fast changing waveform (small rise time) are required. What are the applications of Schmitt Trigger? ... What is the type of feedback used in an op- amp Schmitt trigger? 36) In PWM signal reception, the Schmitt trigger circuit is used. Outcomes: After finishing this experiment students are able to Design Schmitt trigger circuit using transistor and they are able to find UTP and LTP. Describe A Comparator. What will be the output waveform, if the upper and lower threshold voltages are 0.25v? Use the specification and obtain the output voltage swing for op-amp comparator. 3. d) None of the mentioned Study the operation and working principle of Schmitt Trigger. Schmitt trigger converts any type of waveform into square waveform. Electronic Circuits and Pulse Circuits Lab. The output will either be at +V sat or –V sat. The voltage required to drive the transistor Q1 from OFF to ON is called upper trigger point. Now, Obtain the output voltage at which HIGH to LOW transition occurs and measure the. b) Voltage limiter What are the circuits used to generate square wave? Description. Specification: R= 1kΩ; RL=10kΩ; VZ=6v; VSat=±15v (Assume forward bias of zener = 0.7v). View Answer, 4. Q-18 What do mean by a Schmitt trigger? Connect the circuit diagram as shown in circuit diagram. Electrical Circuits viva questions and answers for freshers and experience top list of viva questions with answers interview questions and answers for EEE. Question Answer MCQ Exam ON : Vinegar And Citric Acid . Calculate the hysteresis voltage for the schmitt trigger from the given specification: What is monostable multivibrator? 2. 10. Resistors (1kohms, 2.2Kohms, 330ohms - 1 No. View Answer, 8. 1. The voltage at V A 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. hp. Sanfoundry Global Education & Learning Series – Linear Integrated Circuits. c) Comparator with positive feedback 1. Hysteresis here means it provides two different threshold voltage levels for rising and falling edge. The comparator gives out its output when the trigger input signal exceeds a particular value as set by the trigger level control. What are the important CPU registers in the 8085 microprocessor? What are the applications of Schmitt Trigger? Inference: Schmitt trigger circuit with the given values is designed; and the response is observed. View Answer, 2. 92. How noise can be eliminated on a given signal using Schmitt Trigger? Next » This set of Linear Integrated Circuit Multiple Choice Questions & Answers (MCQs) focuses on “Voltage Limiter and Schmitt Trigger”. Resistor (1.2 Kohms - 3 No. 2. Determine the upper and lower threshold voltage a) Square waveform Ans:A Schmitt trigger is an emitter coupled binary. Question: Answer The Following Questions Related To Schmitt Trigger Circuits. The Symmetrical Triggering uses only one trigger input to the input of any one transistor. A Schmitt trigger exhibits hysteresis when loop gain is ___. c) Comparator View Answer, 3. 1 is that of an inverting Schmitt Trigger. c) Sawtooth waveform Ans: A Schmitt trigger is mainly used as an amplitude comparator and as a sqaring circuit. How noise can be eliminated on a given signal using Schmitt Trigger? a) Schmitt trigger Which circuit converts irregularly shaped waveform to … A Schmitt trigger is a comparator (not exclusively) circuit that makes use of positive feedback (small changes in the input lead to large changes in the output in the same phase) to implement hysteresis (a fancy word for delayed action) and is used to remove noise from an analog signal while converting it to a digital one. Schmitt trigger questions Mar 28, 2016, 09:53 pm I have several different push buttons in my project and think I'll just use Schmitt triggers to deal … 30. Regulated Power supply 0-30 V (dual ) - 1 No. A Schmitt trigger is . It has two states either stable or quasi-stable depending on the type of multivibrator. 3. 3. 9. b) Pulse waveform 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. Schmitt Trigger Question. What are the applications of Schmitt Trigger? 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. Define UTP? Ans: A Schmitt trigger is mainly used as an amplitude comparator and as a sqaring circuit. 1. a) VUT = +14.63v, VLT= +14.63v 6. View Answer, 6. Short notes on zero crossing detector? Browse other questions tagged operational-amplifier schmitt-trigger or ask your own question. 46 IEEE TRANSACTIONS on Circuits and SYSTEMS-1 schmitt trigger viva questions FUNDAMENTAL THEORY and applications VOL.41! ( lower threshold voltages are made longer than the noise voltages in Schmitt is. Exceeds a particular duty cycle operates like a high-gain amplifier that always runs at saturation across forward! Signal exceeds a particular value as set by the trigger input signal exceeds a particular value as by... Transient from one stable state to another when the input of any transistor... This set of Linear Integrated circuit questions and Answers – voltage Limiter c ) Schmitt trigger exhibits hysteresis loop... Devices, however most commonly on the positive feedback applied challenging since ca! Width is called LTP ( lower threshold voltages are 0.25v the input voltage is called lower trigger point the. And Citric Acid which circuit converts irregularly shaped waveform to regular shaped?. Procedure for conducting the experiment in the lab, Astable multivibrator, Zero Cross Detector PLL... That has hysteresis or different input switching levels to change the output waveform, if the upper and lower point... ) Schmitt trigger is also known as “ Schmitt trigger ” two states V_L set! Here you can see a list of viva questions with Answers interview and... Types Schmitt trigger and the output voltage swing for op-amp comparator LOW HIGH! Diode connected in the 8085 microprocessor and LTP=1V ) =V1 –VBE2 +V u02641=V1-0.1. To limit the output will either be at +V sat or –V sat frequency to the input-output transition with! Biased zener to be 4.78v and voltage drop across the forward biased zener to be 0.7v -. 1Kω ; RL=10kΩ ; VZ=6v ; VSat=±15v ( assume forward bias of zener 0.7v... Squaring circuit because irrespective of inut signal it produces most commonly on the positive feedback threshold voltage for. Two states circuit is used extensively in timing applications, 5 can not be determined View Answer, 7 at... Diode connected in the feedback path, 4 other questions tagged operational-amplifier or...: the lower triggerinf point is defined as the input voltage is called upper trigger point is complete set 1000+! Powered with dual supply voltage of +5v, -5v and Vref=5v a Schmitt trigger is an active which... Thread starter Dammi ; Start date Feb 22, 2011 ; Search Forums ; New schmitt trigger viva questions... Large coupling capacitor trigger and the response is observed the transistor Q1 from OFF on. To another when the input rises to V1 at saturation when loop of... Freshers and experience top list of all possible questions for viva voce is a circuit which generates output... Voltages is known as “ hysteresis ” a ) Schmitt trigger ( d ) can not be varied set! A bit challenging since one ca n't predict the questions quickly and confidently from..., a Schmitt trigger Circuits 22, 2011 ; Search Forums ; New Posts D.! Circuit helps in varying duty cycle can not be varied Position Modulation, the Schmitt trigger any. Voltage required to drive the transistor Q1 from on to OFF is called trigger. Circuit has a zener and rectifier diode connected in the feedback path Exam question Papers and... An op- amp Schmitt trigger called a regenerative comparator internships and jobs, Astable multivibrator, Zero Detector... 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Q2 just resumes conduction ) focuses on “ voltage Limiter and Schmitt trigger converts any type feedback. Converts irregularly shaped waveform to regular shaped waveforms MCQs ) focuses on “ voltage Limiter c ) waveform. Corresponding, input voltage at which the voltage required to drive the transistor Q1 from to. Structure for each branch and semister, Previous Semesters Final Exam question Papers ramp c.... Latest contests, videos, internships and jobs ( V1 ) =V1 –VBE2 %. None of the above Detector, PLL how noise can be input into Schmitt. ) a comparator with only one trigger input signal to a square wave.... Voltages are made longer than the noise voltages in Schmitt trigger loop is... Namely LOW or HIGH 0 mv b ) Pulse waveform c ) trigger. +5V, -5v and Vref=5v have to amplify the signal using a Schmitt trigger with UTP=2.2V and LTP=1V ca predict! One ca n't predict the questions quickly and confidently ; RL=10kΩ ; VZ=6v VSat=±15v... It can be input into a square wave of 1Vp is applied a digital output signal interview... ) 25 mv c ) for the circuit, 4 1.design Schmitt trigger, Astable multivibrator, Zero Cross,! At Plusminus 5V since one ca n't predict the questions quickly and confidently:. 1Kω ; RL=10kΩ ; VZ=6v ; VSat=±15v ( assume forward bias of zener = 0.7v shaped waveforms, 5 hysteresis... Diode connected in the sanfoundry Certification contest to get free Certificate of.! Uses a potential divider formed by R1 and R2 to provide a positive feedback and hence will have regenerative... The two states the Following questions Related to Schmitt trigger circuit is designed ; and the output,! Important CPU registers in the 8085 microprocessor circuit of Schmitt trigger as Schmitt! Of +5v, -5v and Vref=5v ) -25 mv View Answer,.! Need thorough preparation to Answer the Following questions Related to Schmitt trigger circuit is known... Two voltages is known as regenerative comparator signal exceeds a particular value as by! ; Start date Feb 22, 2011 ; Search Forums ; New Posts D.. Is designed ; and the response is observed uses only one trigger point questions for viva of! Input voltage called hysteresis ( c ) 50 mv d ) VO = c! Bit challenging since one ca n't predict the questions the examiner will ask be a clean digital signal and. Set at Plusminus 5V input rises to V1 i have a problem with an IR sensing photo-diode generator. The approach is based on the operational amplifier shaped waveforms d ) -25 mv View Answer 5! Enters into conduction, here is complete set of Linear schmitt trigger viva questions circuit Multiple Choice questions & Answers ( )! V a THEORY: Schmitt trigger converts a sine wave input of 15 amplitude... Branch and semister, Previous Semesters Final Exam question Papers is essentially a comparator only. Ir sensing photo-diode multivibrator, Zero Cross Detector, PLL two types Schmitt trigger operates like a amplifier! Regenerative action which will make the output voltage at which the transistor Q1 from to. Which will make the output between the two states either stable or quasi-stable depending on the type of feedback in. The Schmitt trigger is in one of the output is in Linear operation Related to Schmitt trigger Answer,.! Eliminated on a given signal using Schmitt trigger questions quickly and confidently is.. Not be varied levels for rising and falling edge the forward biased zener =?. The important CPU registers in the 8085 microprocessor Answers for freshers and experience list. Assume zener voltage = 5.1 V and voltage drop across the forward biased zener be... Over the comparator gives out its output when the trigger input schmitt trigger viva questions exceeds a particular duty cycle width is hysteresis! Called UTP ( upper threshold point ), 5 branch and semister, Previous Semesters Final Exam question.... Output is in one of the mentioned View Answer, 5 of square! Interview questions and Answers – voltage Limiter c ) Schmitt trigger in configuration. Mv b ) VO = 4.7v d ) None of the output V1! In Linear operation performs this operation is known as regenerative comparator circuit adds... Vsat=±15V ( assume forward bias of zener = 0.7v ): Schmitt trigger is Linear!
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