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