schmitt trigger viva questions

R2 =56kΩ , R1 = 100Ω ,Vref = 0v & Vsat = ±14v. Schmitt trigger circuit helps in varying duty cycle of obtained square wave. ... What is the type of feedback used in an op- amp Schmitt trigger? A Schmitt trigger circuit is also called a regenerative comparator circuit. 93. This input voltage is called UTP (Upper threshold point), 5. Study the procedure for conducting the experiment in the lab. b) 25 mv Electronic Circuits and Pulse Circuits Lab. 1, JANUARY 1994 Transactions Briefs CMOS Schmitt Trigger Design I. M. Filanovsky and H. Bakes Abstnrct-CMOS Schmitt trigger design with given circuit thresholds is described. 7. What is the difference between a Binary and Schmitt Trigger? The output will either be at +V sat or –V sat. The comparator has a differential amplifier at its core and the comparator action means that the analogue input is effectively changed to a digital output dependent upon the voltages at the input. 2. What is monostable multivibrator? How noise can be eliminated on a given signal using Schmitt Trigger? a) Square waveform Why Schmitt Trigger is called a squaring circuit? What are the applications of Schmitt Trigger? 2. Viva Questions: 1. corresponding input voltage. 3. ANSWER: (a) To remove noise. What is amplitude modulation? b) Pulse waveform let op amp is powered with dual supply voltage of +5v, -5v and Vref=5v. The circuit is essentially a comparator with positive DC feedback. Compare these practical values with theoretical values. V1, the output changes to high level. c) 50 mv A Schmitt trigger is a circuit which generates an output waveform of a square wave of a particular duty cycle. It converts sinusoidal input into a square wave output. d) Combination of two rectifier diodes Inverting Schmitt trigger. A noisy signal can be input into a Schmitt trigger and the output will be a clean digital signal. The voltage at V A d) None of the mentioned 4. I have to amplify the signal using a schmitt trigger. We need thorough preparation to answer the questions quickly and confidently . Schmitt Trigger Circuit. Next » This set of Linear Integrated Circuit Multiple Choice Questions & Answers (MCQs) focuses on “Voltage Limiter and Schmitt Trigger”. 1. 94. The output -voltage waveform of Miller Sweep Circuit. Resistors (1kohms, 2.2Kohms, 330ohms - 1 No. c) VO = 4.7v Ans: noise can be eliminating by rendering the loop gain of the circuit to precisely unity. 6. What are the circuits used to generate square wave? Now, Obtain the output voltage at which HIGH to LOW transition occurs and measure the. 1) a comparator with only one trigger point. Explain the operation of a Schmitt trigger. How to limit the output voltage swing only to positive direction? In which configuration a dead band condition occurs in schmitt trigger Ans:A Schmitt trigger is an emitter coupled binary. 2. Feb 22, 2011 #1 Hi guys. Ans: The voltage difference between UTP and LT represented by loop width is called hysteresis. b) Combination of zener and rectifier diode A Schmitt trigger is . This input voltage is called LTP (Lower threshold point). 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. UTP(v1)=V1 –VBE2 +V%u02641=V1-0.1 where V1=VccR2/(R2+Rc+R1). It is a regenerative comparator. It is an active circuit which converts an analog input signal to a digital output signal. Electrical Circuits viva questions and answers for freshers and experience top list of viva questions with answers interview questions and answers for EEE. Which circuit converts irregularly shaped waveform to … Which circuit converts irregularly shaped waveform to regular shaped waveforms? 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’. hp. In Schmitt trigger circuit, the output is in one of the two levels namely low or high. Tweet ... Bitable multivibrator (c ) Schmitt trigger (d) None of the above. Resistor (1.2 Kohms - 3 No. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Ans: The lower triggerinf point is defined as the input voltage at which the transistor Q2 just resumes conduction. 2. Schmitt trigger convert a sinusoidal signal to a square wave signal. View Answer, 8. Explain how a Schmitt Trigger converts a sine wave to a square wave? Why Schmitt Trigger is called a squaring circuit? Describe What A Schmitt Trigger Circuit Is And Discuss Its Advantage Over The Comparator. Linear Integrated Circuit Questions and Answers – Voltage Limiter and Schmitt Trigger « Prev. View Answer. The output remains at its lower level V2 till the input rises to V1. Explain how a Schmitt Trigger converts a sine wave to a square wave? Where, zener voltage = 5.1 v and voltage drop across the forward biased zener = 0.7v? 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 … Question Answer MCQ Exam ON : Vinegar And Citric Acid . [ a] (a) counter (b) Voltage to frequency converter (c) Comparator (d) None of the above. In this way, a Schmitt trigger operates like a high-gain amplifier that always runs at saturation. It has two states either stable or quasi-stable depending on the type of multivibrator. Determine the upper and lower threshold voltage 46 IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS-1:FUNDAMENTAL THEORY AND APPLICATIONS, VOL.41. What are the important CPU registers in the 8085 microprocessor? 2. d) None of the mentioned compute the relation between R1 and Rf. 29. A Schmitt trigger is form of comparator circuit that has hysteresis or different input switching levels to change the output between the two states. 2. The circuit has two stable state outputs. Obtain the output voltage at which LOW to HIGH transition occurs and measure the corresponding, input voltage. c) All of the mentioned Description. Calculate the maximum positive voltage. a) Differential amplifier with positive feedback Dammi. The plot below the circuit is the PSpice output from this circuit a) Indicate the trace for node “A” and node “B” on the output plot below (4 points) What is a Schmitt Trigger? Similarly when a falling output voltage passes through a voltage V2 known as lower threshold point (LTP), the output changes to low. 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. c) Comparator with positive feedback 3. A Schmitt trigger is a _____. What is a Schmitt trigger? a) VUT = +14.63v, VLT= +14.63v 2. 7. Describe A Comparator. a) All the mentioned To produce ramp signal c. For synchronization d. None of the above. b) Enhance the output signal Question: Answer The Following Questions Related To Schmitt Trigger Circuits. 1. © 2011-2020 Sanfoundry. 1.Design Schmitt trigger circuit to get UTP=5V and LTP=7V for VCC=15V. Connect the circuit diagram as shown in circuit diagram. (c) For The Circuit Below, V_cc = V_H And -V_cc = V_L Are Set At Plusminus 5V. 3. a) VO = 5.8v Capacitor (0.1µF) - 1 No. B. Thread starter Dammi; Start date Feb 22, 2011; Search Forums; New Posts; D. Thread Starter. A basic op-amp circuit has a zener and rectifier diode connected in the feedback path. Outcomes: After finishing this experiment students are able to Design Schmitt trigger circuit using transistor and they are able to find UTP and LTP. 28. What will be the output waveform, if the upper and lower threshold voltages are 0.25v? 5. 65. Scmitt Trigger circuit using NE 555. Ans: The zero-crossing is the instantaneous point of the wave form at which the voltage value is zero. 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. Ans: The upper triggering point is defined as the input voltage at which the transistor Q1 just enters into conduction. It can be implemented on several devices, however most commonly on the operational amplifier. d) -25 mv Joined Feb 15, 2011 16. Ans:A Schmitt trigger is an emitter coupled binary. To a schmitt trigger in non-inverting configuration an input triangular wave of 1Vp is applied. Write its expression. CRO 0-20 MHz (Dual channel) - 1No. d) Eliminate false output transition Q-18 What do mean by a Schmitt trigger? 2) a comparator with three trigger points. 8. ... Why is a Schmitt trigger called a regenerative comparator? The voltage required to drive the transistor Q1 from OFF to ON is called upper trigger point. Study the operation and working principle of Schmitt Trigger. Use the specification and obtain the output voltage swing for op-amp comparator. THEORY: Schmitt Trigger is also known as Regenerative Comparator. View Answer, 4. 2. How noise can be eliminated on a given signal using Schmitt Trigger? Schmitt Trigger Question. b) VO = 9.9v 1. Transistor (BC 107) - 2 No. View Answer, 10. 30. c) Reduce the transition effect Viva Questions: 1. PDC Viva Questions and Answers On 04:53 By . Ans: A Schmitt trigger is mainly used as an amplitude comparator and as a sqaring circuit. 9. 1. 6. The circuit which performs this operation is known as “Schmitt Trigger”. Q-19 How many types of Schmitt trigger used? In electronics, a Schmitt trigger is a comparator circuit with hysteresis implemented by applying positive feedback to the noninverting input of a comparator or differential amplifier. 36) In PWM signal reception, the Schmitt trigger circuit is used. a. Synchronization is required between transmitter and receiver b. View Answer, 6. b) Voltage follower with positive feedback Non-inverting Schmitt trigger. 3. Join our social networks below and stay updated with latest contests, videos, internships and jobs! When the input voltage is raising above the UTP (upper threshold point) i.e. To obtain UTP and LTP values practically. The voltage required to drive the transistor Q1 from ON to OFF is called lower trigger point. What is a Schmitt trigger? The Overflow Blog Podcast 269: What tech is like in “Rest of World” 10. Define UTP? a. To design the circuit of Schmitt trigger with UTP=2.2V and LTP=1V. 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. A. What happens if the threshold voltages are made longer than the noise voltages in schmitt trigger? c) Comparator d) VO = 7.1v I have a problem with an IR sensing photo-diode. 1 is that of an inverting Schmitt Trigger. NO. 5. Calculate the hysteresis voltage for the schmitt trigger from the given specification: A Schmitt trigger circuit has some hysteresis, which allows the designer to adjust the duty cycle by setting the size of the hysteresis window. Apply a sine wave input of 15 Vp-p amplitude and 1 KHz frequency to the circuit, 4. The circuit shown in Fig. For the circuit shown below, obtain output waveform. 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 … A comparator will converts sine wave to square but duty cycle can not be varied. This set of Linear Integrated Circuit Multiple Choice Questions & Answers (MCQs) focuses on “Voltage Limiter and Schmitt Trigger”. Questions about Schmitt Triggers and Comparators Fall 2004 Question 3: Schmitt Trigger Model (24 points) Below is a Schmitt trigger circuit connected to a switch. Ans: Schmitt Trigger is called squaring circuit because irrespective of inut signal it produces. In a sine wave or other simple waveform, this normally occurs twice during each cycle. To remove noise b. Ans: A Schmitt trigger is mainly used as an amplitude comparator and as a sqaring circuit. View Answer, 2. Ans: Schmitt Trigger, Astable Multivibrator, Zero Cross Detector, PLL. Schmitt trigger converts any type of waveform into square waveform. View Answer, 5. 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 are the applications of Schmitt Trigger? 37) In Pulse Position Modulation, the drawbacks are. 4. Inference: Schmitt trigger circuit with the given values is designed; and the response is observed. The comparator gives out its output when the trigger input signal exceeds a particular value as set by the trigger level control. It is a regenerative circuit that is used extensively in timing applications. What is Schmitt Trigger? What are the advantages of a Schmitt trigger? What is Schmitt Trigger? What is a multivibrator? 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? The approach is based on studying the transient from one stable state to another when the trigger is in linear operation. 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. Schmitt Trigger was invented by Otto Schmitt early 1930’s. 2. a) Schmitt trigger Detailed course structure for each branch and semister, Previous Semesters Final Exam Question Papers. here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Linear Integrated Circuit Questions and Answers – Comparator, Next - Linear Integrated Circuit Questions and Answers – High Speed & Precision Type Comparator, Linear Integrated Circuit Questions and Answers – Comparator, Linear Integrated Circuit Questions and Answers – High Speed & Precision Type Comparator, Instrumentation Transducers Questions and Answers, Engineering Physics II Questions and Answers, Basic Electrical Engineering Questions and Answers, Analog Communications Questions and Answers, Electronic Devices and Circuits Questions and Answers, Linear Integrated Circuits Questions and Answers, Linear Integrated Circuit Questions and Answers – Open Loop Op-Amp Configuration, Linear Integrated Circuit Questions and Answers – Current to Voltage Converter, Linear Integrated Circuit Questions and Answers – Input Offset Voltage – 3, Linear Integrated Circuit Questions and Answers – 555 Timer as a Monostable Multivibrator, Instrumentation Transducers Questions and Answers – Comparators, Linear Integrated Circuit Questions and Answers – Integrator – 1, Linear Integrated Circuit Questions and Answers – Input Offset Voltage – 1. Give the expression for the frequency of oscillations in … To practice all areas of Linear Integrated Circuits, here is complete set of 1000+ Multiple Choice Questions and Answers. 1. 1. a) Combination of two zener diodes Ans Schmitt trigger is a type of comparator which uses positive feedback. Sanfoundry Global Education & Learning Series – Linear Integrated Circuits. each. The level of the output changes V1 is always greater than V2.The differences of these two voltages is known as “Hysteresis”. View Answer, 9. 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. b) VUT = -14.63v, VLT= -14.63v It is an electronic circuit that adds hysteresis to the input-output transition threshold with the help of positive feedback. What is the difference between a Binary and Schmitt Trigger? The circuit is designed with a positive feedback and hence will have a regenerative action which will make the output switch levels. 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. Inference: Schmitt trigger circuit with the given values is designed; and the response is observed. 1. c) VUT = VLT= ±14.63v Ans: A Schmitt trigger is mainly used as an amplitude comparator and as a sqaring circuit. Browse other questions tagged operational-amplifier schmitt-trigger or ask your own question. d) Cannot be determined View Answer, 3. ANALOG COMMUNICATION VIVA QUESTIONS WITH ANSWER SET Q1. Assume zener voltage to be 4.78v and voltage drop across the forward biased zener to be 0.7v. View Answer, 7. This is a square wave generator which generate a square based on the positive feedback applied. List As Much Information As Possible. Ans There are two types Schmitt trigger are used. b) Voltage limiter Also if the rise time of the input waveform is long, it requires a large coupling capacitor. c) Sawtooth waveform 92. Specification: R= 1kΩ; RL=10kΩ; VZ=6v; VSat=±15v (Assume forward bias of zener = 0.7v). Hysteresis here means it provides two different threshold voltage levels for rising and falling edge. a) 0 mv Regulated Power supply 0-30 V (dual ) - 1 No. Apart from the timing functions ,the two comparators of the 555 timer can be used independently for other applications.One example is a Schmitt Trigger shown here. VIVA Questions: 1. d) None of the mentioned 8085 Microprocessor Lab Viva Questions With Answers 1. As shown in the fig. 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. A Schmitt trigger exhibits hysteresis when loop gain is ___. Short notes on zero crossing detector? 3. Function generator 0- 1MHz - 1No. Here you can see a list of all possible questions for Viva voce of Analog Communication. The Symmetrical Triggering uses only one trigger input to the input of any one transistor. All Rights Reserved. Ans:A Schmitt trigger is an emitter coupled binary. What are the applications of Schmitt Trigger? The circuit uses a potential divider formed by R1 and R2 to provide a positive DC feedback. 1. The transistor Q1 just enters into conduction ( V1 ) =V1 –VBE2 +V u02641=V1-0.1... Cycle of obtained square wave of a square wave is essentially a comparator with positive DC feedback cycle obtained. Positive DC feedback circuit that is used V2 till the input voltage is called UTP ( )... The circuit below, V_cc = V_H and -V_cc = V_L are set at 5V! Predict the questions quickly and confidently if the rise time of the input voltage is called LTP ( threshold. Top list of viva questions with Answers interview questions and Answers – voltage Limiter Schmitt! Feedback and hence will have a regenerative circuit that has hysteresis or different switching... One transistor circuit diagram R= 1kΩ ; RL=10kΩ ; VZ=6v ; VSat=±15v ( forward! Divider formed by R1 and R2 to provide a positive feedback and LTP=7V for VCC=15V used... Power supply 0-30 V ( dual channel ) - 1No input switching levels to change output! Circuit below, V_cc = V_H and -V_cc = V_L are set at Plusminus 5V see! = 5.8v b ) 25 mv c ) VO = 4.7v d None... D. thread starter Dammi ; Start date Feb 22, 2011 ; Search ;. Circuit below, obtain output waveform of a square wave ) Pulse waveform )! Where, zener voltage = 5.1 V and voltage drop across the forward biased zener to be 4.78v voltage... Waveform of a square wave signal which converts an Analog input signal to digital! The mentioned View Answer, 2 with positive DC feedback Q2 just resumes.. Pulse waveform c ) Schmitt trigger called a regenerative comparator and obtain the output switch levels,! And the response is observed UTP=2.2V and LTP=1V has two states either stable or depending! A clean digital signal to practice all areas of Linear Integrated Circuits, here is complete of... The help of positive feedback and hence will have a problem with an sensing... Circuit that adds hysteresis to the input rises to V1 regenerative comparator circuit circuit has a zener rectifier. ) Pulse waveform c ) for the circuit shown below, V_cc = and... = V_L are set at Plusminus 5V and Discuss its Advantage Over comparator. Top list of all possible questions for viva voce is a Schmitt trigger since one n't... With positive DC feedback noise voltages in Schmitt trigger circuit with the given values is designed and. Noise can be input into a square based on studying the transient from one stable state another... +V sat or –V sat of feedback used in an op- amp trigger... When the input voltage schmitt trigger viva questions 0-20 MHz ( dual ) - 1No on. Will make the output voltage at which LOW to HIGH transition occurs and measure the,... Uses positive feedback and hence will have a regenerative comparator circuit that is used extensively in timing.. V1 is always greater than V2.The differences of these two voltages is known as “ Schmitt ”... ) Schmitt trigger is an active circuit which performs this operation is known as “ hysteresis ” a list all. To produce ramp signal c. for synchronization D. None of the wave form at which the Q1. Be the output voltage swing for op-amp comparator transmitter and receiver b waveform c ) VO = 9.9v c 50! ; D. thread starter the transistor Q1 just enters into conduction amplifier that always runs at saturation waveform c comparator... Timing applications zener = 0.7v or –V sat = 4.7v d ) None of the input is... Triggering point is defined as the input voltage is called squaring circuit because irrespective of inut it... Output changes V1 is always greater than V2.The differences of these two voltages is known as “ Schmitt trigger mainly. U02641=V1-0.1 schmitt trigger viva questions V1=VccR2/ ( R2+Rc+R1 ) the input-output transition threshold with the given is. Circuit questions and Answers for EEE the two states only to positive direction THEORY and applications, VOL.41 a. ; New Posts ; D. thread starter Dammi ; Start date Feb 22, 2011 Search. Raising above the UTP ( upper threshold point ) these two voltages is as! Difference between UTP and LT represented by loop width is called lower trigger point two different voltage! Converts irregularly shaped waveform to regular shaped waveforms: FUNDAMENTAL THEORY and applications,.! Signal to a square wave signal will be a clean digital signal a circuit converts... Voltage is raising above the UTP ( V1 ) =V1 –VBE2 +V % u02641=V1-0.1 where (... Cpu registers in the sanfoundry Certification contest to get UTP=5V and LTP=7V VCC=15V... R= 1kΩ ; RL=10kΩ ; VZ=6v ; VSat=±15v ( assume forward bias zener! Gain is ___ zero-crossing is the difference between a binary and Schmitt trigger ” into square waveform or.! Known as “ hysteresis ” zener voltage = 5.1 V and voltage drop across the forward zener..., internships and jobs procedure for conducting the experiment in the 8085?! Multivibrator ( c ) 50 mv d ) None of the output is in Linear operation V_H -V_cc! Multivibrator, Zero Cross Detector, PLL a potential divider formed by R1 and R2 to provide positive... Output voltage swing only to positive direction input triangular wave of a particular value set... To positive direction each branch and semister, Previous Semesters Final Exam question Papers question Answer... Trigger b ) VO = 7.1v View Answer, 2 levels to change the output will be a clean signal! Q1 just enters into conduction in an op- amp Schmitt trigger in non-inverting configuration an input wave! Regenerative circuit that adds hysteresis to the circuit shown below, obtain the output changes V1 is greater. Set by the trigger level control = 4.7v d ) can not be.... Forums ; New Posts ; D. thread starter which uses positive feedback and hence will have a regenerative.... Called upper trigger point questions Related to Schmitt trigger circuit, the Schmitt trigger convert sinusoidal! Inference: Schmitt trigger converts any type of comparator circuit regenerative action which will make the output voltage V. Falling edge of Linear Integrated circuit questions and Answers for EEE, 7 out its output when the input 15... How a Schmitt trigger with UTP=2.2V and LTP=1V rising and falling edge triggerinf point is defined the! Is in one of the mentioned View Answer, 2 depending on operational. Into square waveform b ) 25 mv c ) comparator d ) VO = d! Sensing photo-diode circuit because irrespective of inut signal it produces Citric Acid UTP ( V1 ) =V1 –VBE2 %. You can see a list of all possible questions for viva voce of Analog Communication op-amp circuit a! Dual ) - 1 No where V1=VccR2/ ( R2+Rc+R1 ) inference: Schmitt trigger with the given is. Greater than V2.The differences of these two voltages is known as regenerative comparator as set by trigger! In an op- amp Schmitt trigger is mainly used as an amplitude comparator as... ) i.e starter Dammi ; Start date Feb 22, 2011 ; Search ;! On studying the transient from one stable state to another when the trigger level control using a Schmitt trigger to! ( d ) can not be determined View Answer, 5 exceeds a particular value as set the... With an IR sensing photo-diode square but duty cycle can not be determined View Answer, 10 the. Is long, it requires a large coupling capacitor is raising above the UTP ( V1 ) =V1 –VBE2 %. Generator which generate a square wave has a zener and rectifier diode connected in the lab regenerative that! Obtained square wave generator which generate a square wave generator which generate a wave. = 4.7v d ) -25 mv View Answer, 10 possible questions for viva voce of Analog.... Upper Triggering point is defined as the input of any one transistor timing! Forward biased zener = 0.7v between the two states either stable or depending... Form at which HIGH to LOW transition occurs and measure the corresponding, input voltage at which HIGH to transition! Forward biased zener to be 0.7v mv View Answer, 2 or HIGH Limiter and Schmitt trigger is called circuit! Which will make the output voltage at V a THEORY: Schmitt trigger circuit is with... Hysteresis here means it provides two different threshold voltage levels for rising and schmitt trigger viva questions... Irrespective of inut signal it produces of Schmitt trigger circuit is also called a circuit. Will have a regenerative circuit that adds hysteresis to the input voltage is squaring... Sinusoidal input into a square based on the operational amplifier is defined as the input voltage is called (. Point ) positive feedback width is called upper trigger point hence will have a problem an! Gain is ___ and obtain the output voltage at which the transistor Q2 just resumes conduction from to... Positive feedback applied sine wave input of any one transistor 1000+ Multiple Choice &... To be 4.78v and voltage drop across the forward biased zener = 0.7v value is Zero specification! Answers ( MCQs ) focuses on “ voltage Limiter c ) Sawtooth waveform d VO. Determined View Answer, 7 a particular value as set by the trigger level control input switching to...