Explain how a Schmitt Trigger converts a sine wave to a square wave? I have to amplify the signal using a schmitt trigger. 36) In PWM signal reception, the Schmitt trigger circuit is used. b) 25 mv 1. Why Schmitt Trigger is called a squaring circuit? CRO 0-20 MHz (Dual channel) - 1No. d) None of the mentioned To produce ramp signal c. For synchronization d. None of the above. The circuit uses a potential divider formed by R1 and R2 to provide a positive DC feedback. Study the operation and working principle of Schmitt Trigger. b) Voltage limiter Ans: The voltage difference between UTP and LT represented by loop width is called hysteresis. Which circuit converts irregularly shaped waveform to regular shaped waveforms? c) 50 mv Calculate the hysteresis voltage for the schmitt trigger from the given specification: Browse other questions tagged operational-amplifier schmitt-trigger or ask your own question. This set of Linear Integrated Circuit Multiple Choice Questions & Answers (MCQs) focuses on “Voltage Limiter and Schmitt Trigger”. Q-19 How many types of Schmitt trigger used? The Symmetrical Triggering uses only one trigger input to the input of any one transistor. View Answer, 4. Join our social networks below and stay updated with latest contests, videos, internships and jobs! Next » This set of Linear Integrated Circuit Multiple Choice Questions & Answers (MCQs) focuses on “Voltage Limiter and Schmitt Trigger”. Inference: Schmitt trigger circuit with the given values is designed; and the response is observed. 8. Non-inverting Schmitt trigger. In which configuration a dead band condition occurs in schmitt trigger To remove noise b. Resistors (1kohms, 2.2Kohms, 330ohms - 1 No. Ans:A Schmitt trigger is an emitter coupled binary. Use the specification and obtain the output voltage swing for op-amp comparator. The voltage required to drive the transistor Q1 from OFF to ON is called upper trigger point. What is the difference between a Binary 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. Apply a sine wave input of 15 Vp-p amplitude and 1 KHz frequency to the circuit, 4. Ans: The lower triggerinf point is defined as the input voltage at which the transistor Q2 just resumes conduction. a) 0 mv 5. 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’. d) Combination of two rectifier diodes What are the applications of Schmitt Trigger? Ans: The upper triggering point is defined as the input voltage at which the transistor Q1 just enters into conduction. Tweet ... Bitable multivibrator (c ) Schmitt trigger (d) None of the above. 10. In a sine wave or other simple waveform, this normally occurs twice during each cycle. 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. Transistor (BC 107) - 2 No. © 2011-2020 Sanfoundry. 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. Now, Obtain the output voltage at which HIGH to LOW transition occurs and measure the. 3. Ans: Schmitt Trigger is called squaring circuit because irrespective of inut signal it produces. 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. Electronic Circuits and Pulse Circuits Lab. View Answer, 7. Schmitt trigger convert a sinusoidal signal to a square wave signal. 4. The circuit is designed with a positive feedback and hence will have a regenerative action which will make the output switch levels. b) VO = 9.9v compute the relation between R1 and Rf. A Schmitt trigger is form of comparator circuit that has hysteresis or different input switching levels to change the output between the two states. 1 is that of an inverting Schmitt Trigger. 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 … a. Synchronization is required between transmitter and receiver b. c) VO = 4.7v List As Much Information As Possible. corresponding input voltage. How noise can be eliminated on a given signal using Schmitt Trigger? Explain how a Schmitt Trigger converts a sine wave to a square wave? View Answer, 8. a) VUT = +14.63v, VLT= +14.63v Connect the circuit diagram as shown in circuit diagram. c) Comparator with positive feedback d) -25 mv A basic op-amp circuit has a zener and rectifier diode connected in the feedback path. 3. Schmitt Trigger Question. Ans There are two types Schmitt trigger are used. 7. How to limit the output voltage swing only to positive direction? Short notes on zero crossing detector? c) Comparator Schmitt Trigger was invented by Otto Schmitt early 1930’s. 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. What is Schmitt Trigger? The output -voltage waveform of Miller Sweep Circuit. As shown in the fig. Linear Integrated Circuit Questions and Answers – Voltage Limiter and Schmitt Trigger « Prev. What are the important CPU registers in the 8085 microprocessor? Schmitt Trigger Circuit. What are the circuits used to generate square wave? 5. Feb 22, 2011 #1 Hi guys. 1. Assume zener voltage to be 4.78v and voltage drop across the forward biased zener to be 0.7v. All Rights Reserved. Inverting Schmitt trigger. 94. 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. The voltage required to drive the transistor Q1 from ON to OFF is called lower trigger point. a. It is an active circuit which converts an analog input signal to a digital output signal. 2. 3. The circuit is essentially a comparator with positive DC feedback. A Schmitt trigger is . Describe What A Schmitt Trigger Circuit Is And Discuss Its Advantage Over The Comparator. What is the difference between a Binary and Schmitt Trigger? c) Reduce the transition effect Viva Questions: 1. 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) View Answer, 3. a) Square waveform A. 9. 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. b) Voltage follower with positive feedback 28. B. b) Combination of zener and rectifier diode c) All of the mentioned What is a Schmitt Trigger? ANALOG COMMUNICATION VIVA QUESTIONS WITH ANSWER SET Q1. Dammi. ANSWER: (a) To remove noise. It is an electronic circuit that adds hysteresis to the input-output transition threshold with the help of positive feedback. a) Combination of two zener diodes The comparator gives out its output when the trigger input signal exceeds a particular value as set by the trigger level control. Why Schmitt Trigger is called a squaring circuit? The circuit shown in Fig. c) Sawtooth waveform Ans: A Schmitt trigger is mainly used as an amplitude comparator and as a sqaring circuit. Therefore circuits which can convert a slow changing waveform (long rise time) in to a fast changing waveform (small rise time) are required. This is a square wave generator which generate a square based on the positive feedback applied. Study the procedure for conducting the experiment in the lab. 8085 Microprocessor Lab Viva Questions With Answers 1. PDC Viva Questions and Answers On 04:53 By . Determine the upper and lower threshold voltage What is a multivibrator? each. 6. a) All the mentioned 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. To practice all areas of Linear Integrated Circuits, here is complete set of 1000+ Multiple Choice Questions and Answers. a) Differential amplifier with positive feedback 2. a) VO = 5.8v Scmitt Trigger circuit using NE 555. 1. Give the expression for the frequency of oscillations in … Where, zener voltage = 5.1 v and voltage drop across the forward biased zener = 0.7v? 29. The circuit which performs this operation is known as “Schmitt Trigger”. Joined Feb 15, 2011 16. What is amplitude modulation? We need thorough preparation to answer the questions quickly and confidently . Ans Schmitt trigger is a type of comparator which uses positive feedback. 4. Specification: R= 1kΩ; RL=10kΩ; VZ=6v; VSat=±15v (Assume forward bias of zener = 0.7v). Question: Answer The Following Questions Related To Schmitt Trigger Circuits. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. A Schmitt trigger circuit has some hysteresis, which allows the designer to adjust the duty cycle by setting the size of the hysteresis window. The level of the output changes V1 is always greater than V2.The differences of these two voltages is known as “Hysteresis”. Regulated Power supply 0-30 V (dual ) - 1 No. What is a Schmitt trigger? 2. View Answer, 2. The approach is based on studying the transient from one stable state to another when the trigger is in linear operation. When the input voltage is raising above the UTP (upper threshold point) i.e. V1, the output changes to high level. b) Enhance the output signal 92. Ans: A Schmitt trigger is mainly used as an amplitude comparator and as a sqaring circuit. Inference: Schmitt trigger circuit with the given values is designed; and the response is observed. Function generator 0- 1MHz - 1No. 1. A Schmitt trigger is a _____. b) VUT = -14.63v, VLT= -14.63v ... Why is a Schmitt trigger called a regenerative comparator? d) None of the mentioned Define UTP? To obtain UTP and LTP values practically. Here you can see a list of all possible questions for Viva voce of Analog Communication. Write its expression. Inference: Schmitt trigger circuit with the given values is designed; and the response is observed. Ans:A Schmitt trigger is an emitter coupled binary. It can be implemented on several devices, however most commonly on the operational amplifier. 1. Explain the operation of a Schmitt trigger. 1) a comparator with only one trigger point. Schmitt trigger converts any type of waveform into square waveform. Detailed course structure for each branch and semister, Previous Semesters Final Exam Question Papers. 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 What happens if the threshold voltages are made longer than the noise voltages in schmitt trigger? 2. Also if the rise time of the input waveform is long, it requires a large coupling capacitor. View Answer, 5. 3. c) VUT = VLT= ±14.63v 2. d) Eliminate false output transition How noise can be eliminated on a given signal using Schmitt Trigger? A Schmitt trigger exhibits hysteresis when loop gain is ___. View Answer, 10. Viva Questions: 1. What is a Schmitt trigger? Ans: The zero-crossing is the instantaneous point of the wave form at which the voltage value is zero. For the circuit shown below, obtain output waveform. 2) a comparator with three trigger points. Describe A Comparator. Question Answer MCQ Exam ON : Vinegar And Citric Acid . Ans: Schmitt Trigger, Astable Multivibrator, Zero Cross Detector, PLL. hp. A Schmitt trigger is a circuit which generates an output waveform of a square wave of a particular duty cycle. 1. UTP(v1)=V1 –VBE2 +V%u02641=V1-0.1 where V1=VccR2/(R2+Rc+R1). Resistor (1.2 Kohms - 3 No. 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. 2. It has two states either stable or quasi-stable depending on the type of multivibrator. Q-18 What do mean by a Schmitt trigger? 3. View Answer, 9. What are the applications of Schmitt Trigger?
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