Up to now, these tutorials have discussed only the most basic types of sources. Cadence pspice technology offers more than 33,000 models covering various types of devices that are included in the pspice software. Pspice thevenin experiment with current source set up for dc sweep. Cir file that he created in macspice so i could get used to the programming style and try to run it on my computer. Voltagecontrolled voltage source 4 voltagecontrolled current source 4 basic. When setting up the simulation profile, replace voltage source name.
Pspice ad reference guide includes pspice ad, pspice ad basics, and pspice product version 10. R7s value declared to be a pspice variable now you need to define the variable rval as a parameter which gets varied during simulation. The most popular mac alternative is circuit simulator, which is both free and open source. Find the value of idc if i 39 ina using the nodevoltage method.
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. Exampletf v1,2 vin finds smallsignal voltage gain between nodes 1 and 2 as the output variable. Problem running pspice simulation from orcad capture pcb. Ltspice tutorial wilfrid laurier university physics labs. Using the parts browser select the part called param and insert it anywhere on the circuit diagram as shown. Sep 07, 2018 popular open source alternatives to pspice for linux, windows, mac, web, software as a service saas and more.
The sweep variable in this example the voltage source v1. Ive created a schematic which uses a pulse voltage source to simulate a rotary encoder as follows. Apr 26, 2019 pspice is not available for mac but there are some alternatives that runs on macos with similar functionality. Pspice by cadence design systems, inc is a native analog and mixedsignal circuit simulator. Bias point the bias point analysis is the starting point for all analysis. Download pspice for free and get all the cadence pspice models. Pspice is an acronym for personal simulation program with integrated circuit emphasis. Anyway, if you were looking for pspice for mac, you can try these applications, as these circuit simulators are also quite handy and have similar functions and features. This allows you to make a plot of a voltage or current in the circuit as a function of the dc source voltage. Popular open source alternatives to pspice for linux, windows, mac, web, software as a service saas and more. The potentiometer can then be implemented by the following subcircuit. The original circuit had a sinusoidal input 9 cos 2t. Explore 8 apps like pspice, all suggested and ranked by the alternativeto user community. For those new to mac can get overwhelmed with how to set up and manage these environment variables.
The problem is i have a pc so im using pspice, not macspice. Im new to pspice and im working on a project for school. Macspice requires a textfile description of the circuit as input. So far we have covered circuits with resistors and independent sources. 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. If you doubleclick the e1 dependent voltage source in pspice, you may. Mar 19, 2012 dc sweeps in ltspice terry sturtevant. Pspice has a feature which allows you to automatically change a part value within a specified range and to simulate and graph the results. 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. It is a web portal with access to resources for all things related to pspice circuit simulator. Macos users may check for a package available or install ngspice for macos. Differences between pspice and berkeley spice2 101 analog devices. Jul 30, 2015 basic circuit simulation with ltspice july 30, 2015 by trevor gamblin ltspice is a versatile, accurate, and free circuit simulator available for windows and mac.
Spice is a generalpurpose circuit simulation program for nonlinear dc. A new window pop up with the pspice project type, select create a blank project and click ok. This is an overview of ac and dc simulation, as well as how to analyze output signals. For instance, suppose we wanted to make the voltage source above model. Tf, which is the ratio of output variable to input source, input resistance, and output. If you want to make use of pspice device models often provided by the. Pspice ad reference guide montana state university. Having problems with dc sweep circuitlab support forum. For a transient type analysis, one of possible input source is vpwl piecewise linear voltage source. Pspice software for mac software free download pspice.
In this mode, the simulator calculates the dc operating point of the circuit. Modeling potentiometers and variable resistors pspice. So far we have assumed that the pot is linear, but for a logarithmic pot we need an extra parameter, that is, the dynamic range of the pot. In the enhanced pspice aa flow, you can add tolerance and probability distribution to any exposed model parameters of a subcircuit.
Basic screen there are three windows that are opened. If that doesnt suit you, our users have ranked 28 alternatives to pspice and ten of them are available for mac so hopefully you can find a suitable replacement. This tutorial introduces the dependent source elements in pspice. Figure 1 shows the pspice schematic for a circuit that was analyzed in class. In sweep variable, choose voltage source set name to v1 the name of the voltage source in. Test signals are often applied as independent sources or may be taken from. Pspices strong point is that it helps the user to simulate the circuit design graphically on the computer before building a physical circuit. Transient analysis analyzes changes in voltage and current over time when an input signal is applied to an electronic circuit. A current source dependent on the current of a voltage source. For instance, resistor values, currents, or voltages can be swept. As for the voltage sources, for this circuit youll want to simply enter dc values. For this analysis, a dc sweep of the parameter pset is used and pset is swept from 0 to 1 in increments of 0. Transient, ac analysis, dc sweep, noise, dc transfer, dc op pnt.
Macspice then builds a numerical model of the circuit and analyses this. These include the independent dc and ac voltage and current sources, and the simple voltage or current controlled dependent voltage and current sources. The pspice version available at the university of mississippi can be used on a personal computer for sophisticated analysis of. This netlist is a list of components and the nodes they connect to. How to perform a dc sweep in an analog simulation student created video wlu pc221. As discussed in class there are four types of dependent sources, two are voltage sources and two. Check out the accompanying hackaday post addingspicetoyourworkbench for more details.
If that doesnt suit you, our users have ranked 28 alternatives to pspice and ten of them are available for mac so hopefully you can find a. Pspicemultisim the variable dc current source in the circuit is adjusted so that the power developed by the icurrent source is zero. In other words, if you have a subcircuit model of a simple or complex device such as a motor, you can add tolerances and distribution to any of the exposed model parameters. The dc sweep should be set up to vary i 2 over the range 210 a with increments of 0. To see the results from the print devices click on view and then select output file in the pspice result window. In this article, we will explain in detail the transient analysis. Pspice ad manual and examples program the circuit and. If you doubleclick the e1 dependent voltage source in pspice, you may find the gain property. When launching simulation from schematics, it says unable to find pspicead. For this example v1 is swept linearly from 0v to 20v in 1v increments.
Eldridge alcantara winter 2009 updated fall 2009 1 overview. Solved mac equivlanet of %username% variable spiceworks. This book comes with a tearout card to order a disk with the pspice student version available for both pc and mac. Looking for solutions on the web, it is said to set wine for windows98 and override ole32.
Now that the variable has been defined, a dc operating point simulation is used to evaluate the circuit. Pspice tutorial create a new project and select analog or mixed ad. This tutorial will teach you all you need to know about pspice for ece 65. Ltspice is a versatile, accurate, and free circuit simulator available for windows and mac. 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. It is useful for computing the dc transfer function of an amplifier or plotting the characteristic curves of a transistor for model verification. Pspice software for mac the boingo software for mac for mac os v. The convention here is that positive current flows in to the positive terminal. In words this command tells ltspice that there is a variable named r that has an initial value of 1 and a final value of 7000 and to evaluate the circuit from 1 to 7000 in increments of 10. Basic circuit simulation with ltspice technical articles. Running orcad capture on a mac, using vmware fusion and windows vista. For the types of analysis, please see the following article. The macbook is already on the domain, and i can manually add the drive in question, so its just a matter of finding the right syntax to let the command add the drive for me.
We need a dc voltage source and two resistors that build a simple resistive voltage divider. Using pspice for circuits with dependent sources csun. Tf iv1 vs finds the smallsignal transconductance using the current through the source v1 as the output variable and vs as the input variable. Users can find datasheets, application notes, tutorials, videos, and also information about regional pspice training events and webinars. Note that we inserted a dc voltage source, vmeas, of zero value, in order to be able to measure the current i4. This may be difficult if apple still doesnt understand that more buttons is more flexible in any case, there must be an osxspecific solution to that, because its used a lot in ltspice. 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. Anything in is a library, which contains many parts. Dc dc analysis 32 linear sweep 33 logarithmic sweep 33.
This may be difficult if apple still doesnt understand that more buttons is more flexible in any case, there must be an osxspecific solution to that, because its used a lot in ltspice now you can put whatever expression you want for the label, and the popup shows a. Ltspice tips current dependent current source motley. To rotate parts so that they will fit in your circuit. Dont forget to ground the dc source by attaching the 0 source to the negative terminal. Users may prepare netlists with a text editor, or derive them from a circuit diagram using a thirdparty schematiccapture application. 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. As you can see in the pulse component, im trying to specify the delay as a variable that can be set. Click on pspice and select run to run the dc sweep analysis. So, to sum up, the information in chapter 2 figure 6 dc sweep analysis settings in the pspice users guide, second edition 31 may 2000, is incorrect in one regard. In this article, we will briefly introduce the types of analysis. Pspice ad digital simulation condition messages 61. An annoying problem in pspice is the inability to change some properties of the part. Pspice is a generalpurpose circuit simulator capable of performing four main types of analysis.
Anyway, if you were looking for pspice for mac, you can try these applications, as these circuit simulators. 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. Spice for circuits and electronics using pspice, 2nd ed. Bias point, dc sweep, ac sweepnoise, and time domain transient. I find really annoying to shut down my mac and then change my partition disk to windows and then use pspice. For our example problem, we choose the voltage source and set the sweep variable range so that it cannot run more than one valuedc vs 20. Since the starting value equals the stopping value, the analysis will only run for one case, i. Does anyone know how to install orcad on a macbook. Id also prefer to be able to set the frequency via the period and timing values, but ill start with baby steps. Cadence pspice technology offers more than 33,000 models covering various types of devices that are included in. This performs a dc analysis while sweeping the dc value of a source.
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