This is your basic direct current voltage source that simulates a simple battery and allows you to specify the dc voltage value. Having problems with dc sweep circuitlab support forum. Sep 07, 2018 popular open source alternatives to pspice for linux, windows, mac, web, software as a service saas and more. For instance, suppose we wanted to make the voltage source above model. This tutorial introduces the dependent source elements in pspice. Pulse it should never be used in a frequency response study because ltspice assumes it is in the time domain, and therefore your. Cadence pspice technology offers more than 33,000 models covering various types of devices that are included in the pspice software.
In pspice, this can be done using the etable component in the 2015 oxford university press reprinting or distribution, electronically or otherwise, without the express written consent of oxford university press is prohibited. Cadence pspice technology offers more than 33,000 models covering various types of devices that are included in the pspice lite software. In the analysis we will find the id current and the vds voltage at the given values of vdd and vgs. Value gives the value of the source the name of a voltage and current source must start with v and i, respectively. Popular open source alternatives to pspice for linux, windows, mac, web, software as a service saas and more. Click on the entry dc in the list box, and enter the value in the edit field above. The dc voltage source block represents an ideal voltage source that is powerful enough to maintain specified voltage at its output regardless of the current flowing through the source. This time, replace the dc voltage source with a time varying voltage source, such as vpulse. Spice quirks chapter 7 using the spice circuit simulation program pdf version garbage in, garbage out.
V1 4vdc r1 100 0 as before, go to the pspice tab, or the button, and create a new simulation profile. For the purpose of this tutorial we will only need the analog and the source library. Short tutorial on pspice electrical engineering at new. Jun 05, 2017 shows how to design and simulate a basic dc circuit using pspice. Every pspice project needs a pspice ground to establish a reference potential. Pspice has a feature which allows you to automatically change a part value within a specified range and to simulate and graph the results. Open the pspice design manager on your pc by typing design manager in the search bar. So far we have covered circuits with resistors and independent sources. In first tutorial, you will learn how to download and install this simulation and circuit design software with step by. The software is used mainly by electronic design engineers and electronic technicians to create electronic schematics, perform mixedsignal simulation and electronic prints for manufacturing printed circuit boards. The positive current direction through the current or voltage source is from the positive n1 node to the negative n2 node. Explore 8 apps like pspice, all suggested and ranked by the alternativeto user community.
Pspice simulates the circuit, and calculates its electrical characteristics. You specify the output voltage by using the constant voltage parameter, which can be positive or negative. I had tried a voltage source at one point, but the real problem id run into then was specifying the name of the voltage source. Vsin sinusoidal voltage source model online documentation. In its original form you tell spice what elements are in the circuit resistors, capacitors, etc. One problem though, pspice ploted the current and the voltage on the same axis. Xiong this tutorial will guide you through the creation and analysis of a simple mosfet circuit in pspice schematic. This time give it the name resistance the simulation profile setup for a dc sweep is shown below.
The default value is swing select swing to implement a generator controlling the magnitude and phase angle of its terminal voltage. The pspice ground has symbol, which is different from ordinary ground with symbol. Analog design and simulation using orcad capture and pspice. Pspice tutorials with examples from beginners to experts. In each case we will want to observe voltages andor currents as a function of time. Sep 07, 2018 pspice software for simulating voltage and currents of a text file netlist of a electronics components such as resistors, capacitors, inductors, transisters, diodes, voltage and current sources, etc. Once i cottoned onto that and reversed to a voltage source, the dc sweep worked fine and i was able to apply it to an experiment in constant current sources id. If you doubleclick the e1 dependent voltage source in pspice, you may find the gain property. By quirk i mean a demand placed upon the user to write the source file in a particular way in order for. Example circuits and netlists using the spice circuit. Anyway, to be a little more helpful, if you want 3v and you have 2 x 1.
In previous tutorials we have described the dc voltage source, vdc, and the sinusoidal voltage source, vsin. The sweep type is set to linear, starting from 0 to 10 v in steps of 1 v. Pulse waveform a voltage pulse or pulse train can be applied as an independent source in pspice using the. Specify the reference voltage magnitude and angle in the swing bus or pv bus voltage and swing bus voltage angle parameters of the load flow bus block connected to the voltage source terminals. If we need a graphical output, pspice can transfer its data to the probe program for graphing purposes. The name is the reference designator for the voltage source which in this case is v1. Choose pspice a edit simulation profile, you get the following window in the analysis tab set the analysis type to be dc sweep. For the dc voltage source, we have only one property o modify dc. As described in the license agreement, you are permitted to run one copy of the orcad software on one computer at a time.
Pulse it should never be used in a frequency response study because ltspice assumes it is in the time domain, and therefore your probe plot will give you inaccurate results. Browse cadence pspice model library cadence pspice technology offers more than 33,000 models covering various types of devices that are included in the pspice software. Consider the sinusoidal voltage source in the above image, with the following characteristics. Make sure the sweep variable is set to voltage source. Unauthorized duplication of the software or documentation is prohibited by law. Notes for orcad pspice university of california, san diego. Spice is a very reliable piece of software, but it does have its little quirks that take some getting used to. In sweep variable, choose voltage source set name to v1 the name of the voltage source in your schematic. The voltage is directly proportional to the current in a circuit provided that the resistance and the temperature remains constant. Close the library selection window and we will begin the construction of the following circuit. To change the value of dc voltage source to 12v as shown in figure 5 double click on 0vdc to open the following dialog box, cet 3464 software.
If you did get a decent answer you can accept it and you might get more responses to this question. Create a second voltage source right now to practice. May 12, 2017 this is your basic direct current voltage source that simulates a simple battery and allows you to specify the dc voltage value. Pspice is the most prominent commercial version of spice, initially developed by microsim 1984, but now owned by cadence design. Voltage and current sources are in the sources library. Display measurement of dc differential voltage in pspice. An ac circuit is the one in which the source of the circuit is of alternating current rather than dc direct current. You can either select the current and multiply it by or plot it on a separate y axis. Multiple dc sources v1 1 0 dc 24 v2 3 0 dc 15 r1 1 2 10k r2 2 3 8. The swept value can increase in a linear or a logarithmic range, or can be a list of increasing values. In this tutorial, we will examine mosfets using a simple dc circuit and a cmos inverter with dc sweep analysis this tutorial is written with the assumption that you know how to do all of the basic things in pspice.
You should now see values on your circuit representing current andor voltage. Dc dc analysis 32 linear sweep 33 logarithmic sweep 33. Spice is a program developed by the ee department at the university of california at berkeley for computer simulation of analog circuits. Orcad systems corporation was a software company that made orcad, a proprietary software tool suite used primarily for electronic design automation eda. Feb 07, 2018 pspice voltage and current sources watch more videos at lecture by. Vsrc dc voltage source model online documentation for. Source controlled multiple controlling sources voltage source. If you want to display the value on the schematic page, click change display. In the currentsource driving a capacitor circuit in parallel with a voltage source, it your lack of understanding of kvl is causing your confusion. Pspice ad digital simulation condition messages 61. Apply a current source and use dc sweep to obtain the vi graph for the thevenin circuit and compare with the original. Electrical and computer engineering outline introduction. This allows you to make a plot of a voltage or current in the circuit as a function of.
Heres the video on how to load the parts library in pspice. Pspice model library includes parameterized models such as bjts, jfets, mosfets, igbts, scrs, discretes, operational amplifiers, optocouplers, regulators, and pwm controllers from various ic vendors. As an example of this, suppose we want to experimentally determine the thevenin equivalent of the circuit of figure 9 to the left of the terminals ab. The dc analysis calculates the circuits bias point over a range of values when sweeping a voltage or current source, temperature, a global parameter, or a model parameter. It would be pleasing to have pspice measure this voltage or any differential. The tutorial starts under the assumption that the demo version of pspice is installed on your computer. At the start of the tutorial a brief introduction of ac alternating current is provided after that a simple ac circuit is implemented in pspice and the results were analyzed precisely. Sometimes one would like to figure out voltage, current, or power for a given circuit. In this tutorial this law is applied and verified using pspice as you will see shortly. So if you want to learn about this software, you should check complete guide at the end of article.
It is likely that the old url for this pspice tutorial will disappear on august 31, 2015. A frequency of 0 and phase equal to 90 degrees specify a dc voltage source. Also pspice is a simulation program that models the behavior of a circuit. An annoying problem in pspice is the inability to change some properties of the part.
Similar to bias point, expect that the value of one dc source in the circuit can be varied over some range, and the currents and voltages in the circuit are calculated at each dc source value. Create a new schematic and enter your thevenin equivalent. The simulationready sinusoidal voltage source component vsin can be found in the simulation sources integrated library \library\simulation\simulation sources. Shows how to design and simulate a basic dc circuit using pspice. Pspice tutorial 3 using pspice for circuits with dependent sources the problems in this tutorial and the corresponding homework continue to deal with the dc analysis of circuits, or dc bias analysis in pspice. The impedance of an ideal voltage source is zero, so the voltage across the capacitor will be 1mv, regardless of the what the current source is doing. Design and simulate a basic dc circuit using pspice youtube. Design and simulate a basic dc circuit using pspice duration. If that doesnt suit you, our users have ranked 28 alternatives to pspice and eight of them are available for linux so hopefully you can find a suitable replacement. The circuit diagram below is what you will build in pspice. This tutorial is based on pspice with orcad capture 16. Pspice voltage and current sources watch more videos at lecture by. Similarly, one can simulate analog circuit like amplifiers, oscillators with the software.
As with other analysis types, a pspice simulation profile needs to be created. Dc transformer voltage controlled voltage source e. Pspice is not available for linux but there are some alternatives that runs on linux with similar functionality. Since the amplitude of the voltage is 10 and the amplitude of the current is 4ma, the current looks like a flat line. This allows you to make a plot of a voltage or current in the circuit as a function of the dc source voltage. The most popular linux alternative is circuit simulator, which is both free and open source. Spice quirks using the spice circuit simulation program. For instance, resistor values, currents, or voltages can be swept. This tutorial is written specially for cet 3464 software programming in engineering technology, a course offered as part of bsecet program at valencia college. Pspice simulation profile an overview sciencedirect topics. And pspice is a product of the orcad corporation and the student version we are using is. Instruction set for simulating power electronics using.
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