Top 10 PSPICE Interview Questions and Answers

Authored By: Ankita Prajapati

PSPICE for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence. You must understand the basics of PSPICE to secure a job related to it. Read the top PSPICE Interview Question and Answers.

Question 1: Can you explain what a transient analysis is? What does it do? 

Answer: A transient analysis is a form of analysis used to ascertain how a circuit will behave over time. This is accomplished by observing how the circuit’s voltages and currents evolve. This can be used to find out information such as the time it takes for a circuit to attain a steady state or the maximum voltage or current that can flow through it.

Question 2: What are some examples of the types of things that can be analyzed using PSpice?

Answer: You may examine electronic circuits with PSpice. This covers tasks like figuring out the voltage or current at various circuit locations or simulating how a circuit will react in certain scenarios. 

Question 3: How do you set up and run an AC analysis with PSpice?

Answer: You must first open the AC Analysis dialogue box in PSpice to configure an AC analysis. To do this, choose “AC Analysis” from the Analysis menu. You must enter the parameters for the analysis as well as the type of AC analysis you want to do in the AC Analysis dialogue box. Clicking “OK” will start the analysis after you have chosen the analysis type and parameters.

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Question 4: Can you explain how to create a SPICE model for a specific component in PSpice? 

Answer: By using the “Construct SPICE Model” option under the “Component” menu in PSpice, you can create a SPICE model for a particular component. By doing so, a new window will appear where you can enter the model’s parameters. You can save your model and use it in simulations when you have supplied all the essential data. 

Question 5: Is it possible to view the details of a circuit design in PSpice before running a simulation? If yes, then how? 

Answer: Yes, before performing a simulation with PSpice, it is possible to inspect the specifics of a circuit design. You must open the design file in the Schematic Editor to accomplish this. The Hierarchy option can be chosen from the View menu after the file has been opened. You’ll be able to view the circuit design’s finer points as a result.

Question 6: What’s the difference between DC sweep and AC sweep when simulating with PSpice?

Answer: To mimic how a circuit will behave when its voltage or current is changed linearly across a range of values, a DC sweep is utilized. When a circuit’s voltage or current is adjusted sinusoidally through a range of values, an AC sweep is used to imitate the behavior of the circuit. 

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Question 7: How do you perform a Monte Carlo analysis (MCA) in PSpice? Can you give me an example of when this would be useful?  

Answer: The sensitivity of a circuit to changes in component values can be ascertained with the aid of a statistical analysis known as a Monte Carlo analysis. This helps determine a circuit’s worst-case or best-case performance or when you want to know how a circuit will operate in various scenarios. In PSpice, you must first build a library of components with various values before you can perform an MCA. Following that, you can build a circuit utilizing these parts and perform a simulation. Automatic component value changes and repeated simulation runs are performed by PSpice.

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Question 8: How do you use PSpice to perform parametric sweeps?

Answer: Parametric sweeps can be carried out in PSpice utilizing the. PARAM declaration By using this line, you may tell PSpice a range of values for a certain parameter, and it will simulate the circuit for each of those values. This is a practical method for observing how a circuit operates under a variety of scenarios. 

Question 9: What is the process for creating and saving custom libraries in PSpice?

Answer: You must first create a new library file in PSpice before you can create a custom library. Go to File > New > Library to accomplish this. Once the new library file has been generated, you can add components to it by selecting the Components tab and then clicking the Add button. When all of the appropriate elements have been included, you may save the library by selecting File > Save.

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Question 10: What are some common errors that arise during schematic entry? 

Answer: Forgetting to connect a wire between two devices is one such mistake. The simulation findings may be flawed as a result of this. Using the incorrect device model for a specific device is another frequent mistake. Additionally, it may result in mistakes in the simulation results. 

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