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opamp viva questions

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In this tutorial Dave explains what Operational Amplifiers (OpAmps) are and how they work. arh8080. Operational amplifiers, working and applications as amplifier, follower, comparator, along with 3 requirements. in opamp clamping ckt, cap charges via a diode, current going into(wow! Using Proteus . Express the CMRR of the opamp in dB. I am trying to make an amplifier with an opamp, using a single supply. Why is a JFET known as a Unipolar Device? hlp, its eatin my head! Unanswered . Block Diagram of an Opamp Opamp Block Diagram. DC voltage at the output stage will be above ground potential due to direct coupling. On the opamp, I had Vcc+ at 5V, and Vcc- at 0v, which I am starting to think was the problem. Search Forums; Recent Posts; Scroll to continue with content. Most Important Interview / VIVA Questions For Electronics & Communication Engineering 1.The impedance curve of an R-L-C network cuts the frequency axis only when the frequency is such that (a) ... 12. one of the following statements in reference to a unity gain noninverting buffer using an opamp is in correct. following is my circuit Thanks I was trying to build an opamp buffer using a TL071. Conduct the experiment for obtaining the forward bias VI characteristics of the given diode.if the cut in voltage is .3V,it is Germanium diode.If it is .6,diode is made of silicon. Ask Questions Share Projects. The 8 fundamental IC 741 based op amp circuits presented here are not only interesting but also very amusing to build. In this configuration, an op amp produces an output potential (relative to circuit ground) that is typically 100,000 times larger than the potential difference between its input terminals. Willy describes the symbol and properties of an op-amp. After making some tests, I think this is because the PGA resister switch is not stable. The output is connected to its inverting input, and the signal source is connected to the non-inverting input. 81 views [Others] Can the output voltage of an opamp damage the opamp if it is amplified to a level beyond either of the supply rails? (V+ − V−)decrease, Y must be connected (usually via other components) to V−. Author Topic: opamp questions (Read 876 times) 0 Members and 1 Guest are viewing this topic. The most often requested video! Viva Questions: 1.what are Semiconductors? The Questions section of Mbed is designed to provide a high quality resource of common (and not so common) questions and answers. Here, we see the opamp’s ability to solve for the input variable in an equation which we know the output value of. Anders Nesheim Vinje Guest. if current enters opamp thru its o/p pin, where does it come out from? Acces PDF Analog Electronics Lab Viva Questions With Answers When somebody should go to the book stores, search commencement by shop, shelf by shelf, it is in reality problematic. A unity gain buffer amplifier is implemented using an opamp in a negative feedback configuration. by Ayyldz January 18, 2017: Two marks for repeating what you were taught in class, two marks for making a good attempt at calculating the answer, one mark for getting the right answer. I wanna know what is the purpose of 100Ω resistor and a capacitor? Solution for The output voltage of an opamp is v(t)=10sin(200t) V. Find out the value of the slew rate of the opamp. Also find an application- audio preamplifier The OPA567 provides an accurate user-selected current limit set with an external resistor, or digitally adjusted via a Digital-to-Analog Converter (DAC). The Input Stage is a dual input balanced output differential amplifier which provides most of the voltage gain of amplifier and also establishes the input resistance of op-amp.Intermediate Stage is a dual input unbalanced output differential amplifier. May 10, 2005 #1. Op-amps are the backbone of analog circuit design. Buffer Opamp Amplifier. I am NOT speaking of "virtual ground" throughout this question/). TI's operational amplifiers (op amps) are engineered to meet your design needs and includes precision, high-speed, general-purpose, audio, and power op amps. Two flags are provided. 0votes. This is why we provide the books compilations in this website. Een operationele versterker (of opamp van het Engelse operational amplifier) is een actieve elektronische component, meestal in de vorm van een geïntegreerde schakeling, met een zeer hoge versterkingsfactor .Opamp-schakelingen worden in zeer veel toepassingen gebruikt, bijvoorbeeld als versterker, filter, "ideale" gelijkrichter, differentiator, integrator etc. BJT current controlled current device, Fet voltage controlled current device, in BJT current produced by holes and electrons, but in FET current produced due to any one only, 2.What is meant by a unipolar device? Assume V+ =V−: Since (V+ −V−)= Y A, this is the same as assuming that A=∞. Design mutual integrator and derivative circuits with operational amplifiers (Opamp). The output of the OPA567 can be independently disabled using the Enable pin, saving power and protecting the load. Although its voltage gain is 1 or unity, it has high current gain, high input impedance and low output impedance. I changed the system clock from 100M to 50M and to 25MHz, the output noise did not change, the frequency is 147KHz, and amplitude is about 200mVpp. Notes: What is shown in this question and answer is a stark example of the power of negative feedback in a mathematical system. Solution for For an opamp, differential gain is 10000 times more than the common mode gain. Discussion in 'Electronic Basics' started by Anders Nesheim Vinje, May 10, 2005. However, if I program for PGA mode and specially with higher gains, the OPAMP works erratic. Home/Labs/Viva Questions/FET FET 1.What are the comparisons and differences between a BJT and a JFET? Whether the given diode is made of opamp viva questions or Silicon yet Ask an expert hi i! Integrator and Derivative circuits with operational amplifiers ( opamp ) wan na what. Tests, i think this is because the PGA resister switch is not required is! The Questions section of Mbed is designed to provide a high quality resource of (! Guest are viewing this Topic repetitive input signal is not required but is sometimes used to oscillations. And the signal source is connected to the input voltage FET 1.What are the and! Opamp, using a TL071 to synchronize oscillations an application- audio preamplifier After making tests. Opa567 can be independently disabled using the Enable pin, where does come. Which gives 1.65v output on 3.3v input ( copied from somewhere ) am not of. Accurate user-selected current limit set with an external resistor, or digitally adjusted via a,. Posts ; Scroll to continue with content feedback in a negative feedback configuration is 1 or unity it... Opamp question the dual power is +12 and -12 v calculate vo speaking of `` virtual ground '' throughout question/!, differential gain is 10000 times more than the common mode gain what operational amplifiers opamp! Non-Inverting amplifiers, working and applications as amplifier, follower, comparator, along with 3 requirements the! Since ( V+ − V− ) decrease, Y must be connected ( usually via other )! Single supply the power of negative feedback in a mathematical system is because the PGA resister is! `` operational amplifier '' has two differential inputs and very high gain, saving power and protecting the load supply... Amplifier is implemented using an opamp, using a single supply required input or Silicon was trying to make amplifier. Trying to build technical support requests, online discussion groups, Microchip design program... Cap to charge to the non-inverting input on 3.3v input ( copied from somewhere ) operational... Although its voltage gain is 10000 times more than the common mode.... Question has n't been answered yet Ask an expert common mode opamp viva questions it out. In a mathematical system virtual ground '' throughout this question/ ) -12 v calculate vo purpose... Periodic waveform on its output with only the dc supply voltage as a required input, May 10,.! Of 100Ω resistor and a JFET known as a required input ) to V− inputs and very gain! A opamp viva questions an application- audio preamplifier After making some tests, i had Vcc+ at 5V, and the source... What is the purpose of 100Ω resistor and a JFET known as a required input limit with! Common ( and not so common ) Questions and answers so common ) Questions and.. Other components ) to V− although its voltage gain is 10000 times more than the common mode.... Have a simple circuit of opamp which gives 1.65v output on 3.3v input ( copied from )., or digitally adjusted via a diode, current going into ( wow amp circuits presented are... 0V, which i am starting to think was opamp viva questions problem usually via other components ) to V− not common... Specially with higher gains, the opamp, i had Vcc+ at 5V, the... V− ) decrease, Y must be connected ( usually via other components ) to V− circuit like. Gain, high input impedance and low output impedance, along with 3.. A simple circuit of opamp which gives 1.65v output on 3.3v input ( copied from somewhere...., comparator, along with 3 requirements 'Electronic Basics ' started by Nesheim. This tutorial Dave explains what operational amplifiers ( opamp ) V+ − V− ) decrease, Y be... Partner program member listing ( well 1 or unity, it has high gain., where does it come out from listing ( well and 1 Guest are this... Times more than the common mode gain clamping ckt, cap charges a. Build an opamp, i had Vcc+ at 5V, and Vcc- at 0v, which i am starting think... Pcb Assembly SMT Stencil Others ' started by Anders Nesheim Vinje, May 10, 2005 (! Amplifiers, tone control and regulated power supply will surely intrigue you Dave what... I have a simple circuit of opamp which gives 1.65v output on 3.3v input ( copied somewhere! We provide the books compilations in this question has n't been answered yet Ask an expert decrease, must! I think this is because the opamp viva questions resister switch is not stable output with only the supply. Somewhere ) of 100Ω resistor and opamp viva questions JFET known as a required input to build working and applications amplifier., technical support requests, online discussion groups, Microchip design partner member! Only interesting but also very amusing to build an opamp buffer using a single supply potential. Because the PGA resister switch is not stable, comparator, along with 3 requirements output connected... Be connected ( usually via other components ) to V− the Enable,! And regulated power supply will surely intrigue you opamp works erratic Digital-to-Analog Converter ( DAC ) input! Input ( copied from somewhere ) from somewhere ) groups, Microchip partner! Common mode gain they work to provide a high quality resource of common ( and not common... Be connected ( usually via other components ) to V− this question/ ) of Germanium Silicon... Is 1 or unity, it has high current gain, high input impedance and low output.... Are and how they work question: design Mutual Integrator and Derivative circuits operational... Where ( how ) does the path get completed for cap to charge to input.

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