The most popular linux alternative is circuit simulator, which is both free and open source. Now one artifice that will ease the problem somewhat, in the case where the source voltage is turned on at the same time as is an smps circuit load without inherent current limiting, is to rampup the source voltage. To short out a and b, means to connect a v0 voltage source or a small resistor 1 ohm or 1 milliohm between these points and see what the current is. Make sure the sweep variable is set to voltage source. There are examples of all four types of standard simulation and a selection of different plots. The vexp voltage source generates a waveform as shown in figure 5, where tc1 and tc2 are the time constants of the rising and falling exponentials, respectively. We use ltspice iv at vmi because it fast, stable, and freely. Xiong this tutorial will guide you through the creation and analysis of a simple mosfet circuit in pspice schematic.
Pspice simulation profile an overview sciencedirect topics. Draw an electronic circuit on the computer using capture. There are many types of grounds common points in the circuit, noise reduction, etc. Analyse its behaviour with probe, which can produce a range of plots. So, if you need to build a more complex circuit, you will have to try another version of pspice. Pspice lite version, which can be used by students comes with full functionality of the software, limited only by size and complexity. Vsin sinusoidal voltage source model online documentation. All schematics you draw on pspice will need the following. Doubleclick on the source, and enter the shape of the source voltage.
As with other analysis types, a pspice simulation profile needs to be created. These include the independent dc and ac voltage and current sources, and the simple voltage or current controlled dependent voltage and current sources. Pspice uses nodevoltage method for circuit simulation and, therefore, needs a reference node with zero voltage. How to implement dependent sources in orcad pspice. The next couple of sections will instruct you on how to draw a full circuit. Although the option is provided by the pspice abm syntax, its not genuine behavior modeling. Robinson never explained in detail how to create and run a circuit in pspice. Pspice utilizes the implied 1 and 2 ends for it s handling of current directions and voltage polarities, for example, it represents current as entering a device from its 1 end and leaving its 2 end, and it represents a positive voltage at its 1 end with respect to its 2 end.
Then, the demands of the load may be within reasonable values. The sweep type is set to linear, starting from 0 to 10 v in steps of 1 v. Notes for orcad pspice university of california, san diego. Using pspice to find the thevenin equivalent circuit. Pspice how to use this online manual how to print this online manual welcome overview commands analog devices digital devices customizing device equations glossary. The simulation program with integrated circuit emphasis spice became an industry standard for circuit simulation. Pspice is not available for linux but there are some alternatives that runs on linux with similar functionality. 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. If you would like to use orcad pspice software with your own computer, you can install it by following the. This video shows how to implement dependent sources in pspice software. Voltage and current sources are in the sources library.
In previous tutorials we have described the dc voltage source, vdc, and the sinusoidal voltage source, vsin. Whether youve loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. Electrical and computer engineering outline introduction. The left side is connected so that the controlling current in this case i 0 runs through the left side of the dependent source symbol. In pspice you may use a voltage source with value of zero in series with any other element to act as an ammeter. Sep 07, 2018 popular open source alternatives to pspice for linux, windows, mac, web, software as a service saas and more.
Pspice time and voltage dependant parts and circuits implementing an analog behavior model with time variable dependency means to include an independent source to the model. Davies september 18, 2008 abstract this handout explains how to get started with cadence orcad to draw a circuit schematic capture and simulate it using pspice. Pspice ad manual and examples install pspice ad on your computer. In the previous section we used the variable voltage supply, v1, to plot the characteristics of a. Im trying to simulate the above circuit in pspice, but i am getting the error. It is likely that the old url for this pspice tutorial will disappear on august 31, 2015. Mar 01, 2020 furthermore, you can simulate the behavior of a circuit at a given intensity, amplitude or voltage.
The name is the reference designator for the voltage source which in this case is v1. The circuit is limited to 64 nodes and 10 transistors. Just draw the schematic, then assign names for the resistor, capacitor, voltage source r1, c1, vs and node numbers 1 and 2. Most typically, we will use a voltage source with an amplitude of 1 v.
When simulation is complete probe graphic window appears. Cdroms with the installation software are available from the instrument room. The dc sweep analysis varies a voltage source over a range of voltages in an assigned number of. For instance, suppose we wanted to make the voltage source above model.
We use probes to generate the frequency response plots, which show up in separate windows. Sometimes one would like to figure out voltage, current, or power for a given circuit. Pspice time and voltage dependant parts and circuits. And unlike every others student in my circuit theory, i didnt take ee100, which offer for freshman student. Every pspice project needs a pspice ground to establish a reference potential. Introduction to orcad capture and pspice professor john h. It was the first time i heard and work with the pspice software. If you did get a decent answer you can accept it and you might get more responses to this question. Linear this is so you can sweep through a range of values 6 fill in the start, end, and increment values. The pspice ground has symbol, which is different from ordinary ground with symbol. Pspice time and voltage dependant parts and circuits hi again people.
Create a project open source software business software top downloaded projects. For example, consider the case of creating the simple dc voltage source vt. A voltage pulse or pulse train can be applied as an independent source in pspice using vexp. Up to now, these tutorials have discussed only the most basic types of sources. Pspice models there are are some files one can use to add to their pspice library.
The minus sign is required because pspice measures voltage source currents as flowing from the positive node to the negative. 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. Dec 28, 2014 this video shows how to implement dependent sources in pspice software. This tutorial introduces the dependent source elements in pspice. This is simply constructed by right clicking over the schematic text describing the pwl source and editing it. The heart of your spice file is the netlist, which is simply a list of components and the nets or nodes that connect them together. The tutorial starts under the assumption that the demo version of pspice is installed on your computer. Implementing an analog behavior model with time variable dependency means to include an independent source to the model.
If this is cumbersome to read on the schematic, an alternative way of describing the waveform is shown in fig 4. The circuit diagram below is what you will build in pspice. Popular open source alternatives to pspice for linux, windows, mac, web, software as a service saas and more. All three libraries can be installed at once by using the ctl key on.
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. It simulates complex mixedsignal designs containing both analog and digital parts, and it supports a wide range of simulation models such as igbts, pulse width modulators, dacs, and adcs. You can find it on my angel homepage for this course. So far we have covered circuits with resistors and independent sources. In each case we will want to observe voltages andor. Cadence pspice technology offers more than 33,000 models covering various types of devices that are included in the pspice software. Use pspice to find the diode current and voltage in the circuit shown. An annoying problem in pspice is the inability to change some properties of the part. 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.
The following figure shows the selection of a dc voltage source or battery. For the sweep variable type select the voltage source, and set its name to v1. Pspiceltspice compatability electronics forum circuits. As an example, well create a netlist for a simple lowpass rc filter.
This time, replace the dc voltage source with a time varying voltage source, such as vpulse. You may have noticed that one of your questions from yesterday was deleted because the moderators thought i was giving you too much help. We use ltspice iv at vmi because it fast, stable, and freely available for students to install and use on their laptops. Can ltspice work accurately with pspice models, or does it just ignore any bits it doesnt understand which would result in inaccurate modelling, but maybe not let the user know that.
This download was checked by our antivirus and was rated as virus free. Orcad pspice for absolute beginners 3using a current source duration. The simulationready sinusoidal voltage source component vsin can be found in the simulation sources integrated library \library\simulation\simulation sources. This time, replace the dc voltage source with a time. 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. Close the library selection window and we will begin the construction of the following circuit. Pspice is a circuit analysis program, developed by microsim corporation, based on the well known spice program simulation program for integrated circuit evaluation developed at the university of californiaberkeley. Anyway, to be a little more helpful, if you want 3v and you have 2 x 1. Harvey morehouse is a contractorconsultant with many years of experience using circuit analysis programs. Since this is a new version of the program we have not determined which.
Other readers will always be interested in your opinion of the books youve read. Couldnt find a ltspice model for ina128 instrumentation amp but did find a pspice model. Pspice web portal provides extensive model library of more than 33,000 pspice models which are also easily available with the pspice lite download. Pspice schematic with current controlled voltage source note that the right side of the device goes where the voltage source appears in the circuit.
Historically this was a separate application but it is now integrated with pspice. Pspice student is sometimes distributed under different names, such as pspice student thinstalled. Explore 8 apps like pspice, all suggested and ranked by the alternativeto. Consider the sinusoidal voltage source in the above image, with the following characteristics. Cadence pspice ad is the defacto industrystandard spicebased simulator for system design. Furthermore, you can simulate the behavior of a circuit at a given intensity, amplitude or voltage. For a dc sweep analysis, select pspice new simulation profile and select dc sweep for the analysis type. Ltspice also known as spice walkthrough there are a variety of circuit simulation programs available. Klingenberg school of engineering and computer science. Third dimension for circuit element is added based on the voltage.
The tutorial starts under the assumption that the demo version of. His primary activities are in reliability, safety, testability and circuit analysis. The pspice version available at the university of mississippi can be used on a personal computer for sophisticated analysis of electric circuits of. Explore 8 apps like pspice, all suggested and ranked by the alternativeto user community. For the purpose of this tutorial we will only need the analog and the source library. Select voltage source in sweep variable and give the exact name of your voltage source under name. For example r9 5 2 15k means that resistor r9 lies between node 5 and node 2, and has a value of 15000 ohms. A nonlinear capacitor model for use in the pspice environment. A quick guide to using pspice 9 florida institute of. The big disadvantage of this software version is that the circuit simulations are limited. Using the sweep type linear, set the starting value to 0, end value to 20 and increment to 0.
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