Pspice simulates the circuit, and calculates its electrical characteristics. Use pspice and ac analysis for a single point 60 hz to obtain the. An quick examination of the curves reveals this is the case. Inc include file a4 h current controlled current source a15. Provides simulation and analysis for electrical circuits. 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. Explore 8 apps like pspice, all suggested and ranked by the alternativeto user community. Objective of lecture introduce the parts in pspice for dependent voltage and current sources. Probe probe 67 dc sweep and transient analysis output variables 68. Simply reversing the orientation of a current source or inverting its value is not sufficient because it is still sourcing current, just in another direction. Any independent voltage source which has an ac property attached to the part can be used as an input to the circuit.
Third dimension for circuit element is added based on the voltage. Probably the best way to start off is to take a simple circuit and see what kind of simulations you can perform in pspice. Cadence pspice technology offers more than 33,000 models covering various types of devices that are included in the pspice software. Microsim pspice ad how to use this online manual welcome to microsim overview commands analog devices digital devices customizing device equations glossary. Orcad free trialorcad trial provides full version of the latest release of orcad electronic design software solutions for free for a limited time, including orcad capture cis, orcad pspice designer, orcad pcb designer professional, orcad sigrity erc, and more. Pulse,exp, or sin is specified for transient analysis. Ic initial transient condition a4 g voltage controlled current source a14. This is dependent on what you want to achieve by simulating your model in pspice. 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. Transforming the voltage source to the current source and writing the nodevoltage equation results in. The current of the source is assumed to flow from the firstnamed node to the lastnamed node. Pspice is not available for linux but there are some alternatives that runs on linux with similar functionality. Orcad pspice designer new, perpetual license orcad pspice designer new, 1 year. Dependent sources type of source acronym symbol in text part name in pspice symbol in.
Pspice schematic with current controlled voltage source note that the right side of the device goes where the voltage source appears in the circuit. An annoying problem in pspice is the inability to change some properties of the part. The types of source waveforms are the same as for the voltage source. For instance, suppose we wanted to make the voltage source above model. Very easy, and works as expected with 1v at vin and 10v at vout. A voltage source may be used as an ammeter in p spice by inserting a zerovalued voltage source in to the circuit for the purpose of measuring current. Pspice student is sometimes distributed under different names, such as pspice student thinstalled. Using pspice for circuits with dependent sources csun.
For a project i am working on related question here i need to model a nonideal variable current sink in spice. Has anyone else had trouble with the performance of a nonlinear transformer model created in pspice. 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. It supports several simulation models that include pulse width modulators, adcs, dacs, and igbts. You should now see the source library and the 0source ground. Pspice ad digital simulation condition messages 61. Pspice bias points, and check enable, enable bias current display, andor enable bias. If we need a graphical output, pspice can transfer its data to the probe program for graphing purposes. Download pspice for free and get all the cadence pspice models. This download was checked by our antivirus and was rated as virus free.
Vexp model the rl circuit shown above is modified to have an exponential input as. It is likely that the old url for this pspice tutorial will disappear on august 31, 2015. Four fourier analysis a4 f current controlled current source a14. Download orcad free trial now to have a full evaluation of all orcad tools with no functionality limitations. For control loops in spice model the inductor as an average system current source for switching frequencies much higher than output filter corner. The software is equipped with mathematical functions. Lec 09 dependent and independent sources in network theory. Its name starts with the letter i followed by any other letters. For a full fledged version or for more information, please contact orcad. The most popular linux alternative is circuit simulator, which is both free and open source. For example a current source might be designated as isad. Explain some issues that arise when connecting these parts in the schematics layout tool in pspice. Download pspice student by cadence design systems, inc.
What are the best sources for learning pspice software on. 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. Ltspice tips current dependent current source motley. Notes for orcad pspice university of california, san diego. Basic screen there are three windows that are opened. Pspice is a simulation program that models the behavior. Introduction to pspice for electric circuits, 10e james w. Pspice tutorial create a new project and select analog or mixed ad. An alternative way is to use a schematic entry program such as orcad capture. A voltage pulse or pulse train can be applied as an independent source in pspice using vexp. A new window pop up with the pspice project type, select create a blank project and click ok.
Describe how to set the part properties to set the coefficient a for the dependent source. Ends end of subcircuit a3 e voltage controlled voltage source a. Pspice voltage and current sources watch more videos at videotutorialsindex. This model is certainly suitable to model most positive current providing sources, and also some sources without active shunt regulation at the output, it will be converted into a circuit model voilim, denoting a current source limiting device. How to implement dependent sources in orcad pspice youtube. Orcad pspice ad how to use this online manual how to print this online manual welcome to orcad overview. And pspice is a product of the orcad corporation and the student version we are using is. Since the current source, is an active element, it matters greatly how it. Here, an independent 1ma dc current source, i1, is connected to a 1 kohm load, and a dependent current source, b1, is set to mirror i1s current exactly iii1 through a larger 10 kohm load. It also modeling techniques that let users perform precise simulation. Orcad pspice designer suite pricing ema design automation. Analog design and simulation using orcad capture and pspice. Linear this is so you can sweep through a range of values 6 fill in the start, end, and increment values.
An evaluation student version, which can handle small circuits with up to 10 transistors, is freely available. As with the independent voltage source, we begin by introducing only the dc form of this part, but several other forms exist. Orcad systems corporation was a software company that made orcad, a proprietary software tool suite used primarily for electronic design automation eda. This tutorial introduces the dependent source elements in. Also pspice is a simulation program that models the behavior of a circuit.
This popular version of spice, available from orcad now cadence runs under the pc platforms. Im trying to simulate a voltage dependent current source in ltspice and i need to have a limited output current. 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. This is your basic direct current voltage source that simulates a simple battery and allows you to specify the voltage value.
Independent and dependent voltage and current sources. 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. Pspice orcad tutorial modeling npn transistor with dependent current source. Use the link given below and proceed to the developers website in order to download pspice free. Pspice schematic with current controlled voltage source. Hardwaresoftware codevelopment, verification and integration forums. I created the core model ok and used the k model to couple the windings and the core. To see the resistors, independent voltage and current source, diode and bipolar. Popular open source alternatives to pspice for linux, windows, mac, web, software as a service saas and more. Ltspice contains models for most ltc power devices and many more you can also check out ltspice capab ilities using the education examples available on c.
You can put a switch in series to break a voltage but if you put it in series with an ideal current source, the current will still manage to get through the switch even if it is 1g ohm. Pspice simulates designs that cater to both digital and analog parts. How to implement dependent sources in orcad pspice. Pspice quick guide and tutorial university of mississippi. Maximum output voltage of operation amplifier with maximum load current 3 strange behavior measuring voltage difference between two independent voltage source 16 urgentpspice maximum point problem 0. Pspice student is an analog circuit simulator that was specially designed for electrical engineering students in need of simulating circuits and of solving circuitsrelated calculations.
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