Make sure the sweep variable is set to voltage source. The other simulation types will start by running the bias point simulation, to get the circuit to a stable state, and then run the selected simulation type. A dc sweep will apply multiple values to a voltage, or current, source, a model parameter, a global parameter, or temperature. Orcad pspice ad how to use this online manual how to print this online manual welcome to orcad overview commands analog devices digital devices customizing device equations. Pspice tutorial wilfrid laurier university physics labs. Power supply in schematic capture and circuit simulation orcad.
I used orcad a long time ago, so trying to refamiliarise myself. Orcad lite software download is no longer available and has been replaced with new and improved dedicated orcad viewer, orcad trial, and orcad academic versions that provide more advanced pcb design functionality for everyone. Also pspice is a simulation program that models the behavior of a circuit. Now its time to ramp up the difficulty with dc sweep and ac sweep analysis. For example r9 5 2 15k means that resistor r9 lies between node 5 and node 2, and has a value of 15000 ohms. Orcad tutorial simulating the circuit parallel systems. If your design exceeds these limits, you will not be able to save your work or take your design through the flow. Double click on the text 0vdc to change the voltage, set it to 10vdc construct this circuit by selecting the analog library and placing two resistors, which appear in the part. Transforming the voltage source to the current source and writing the nodevoltage equation results in. Justification for the mechanical equivalent circuit. Exercises45 exercise 145 exercise 248 the dc analysis calculates the circuits bias selection from analog design and simulation using orcad capture and pspice book. The name is the reference designator for the voltage source which in this case is v1.
The lite versions of orcad capture and pspice ad products have the following limits with design size and complexity. Dennis fitzpatrick, in analog design and simulation using orcad capture and pspice second edition, 2018. Sometimes its going from the ac current in your wall to the dc current in your circuit. Pspice tutorial 1 pspice basics introduction this tutorial will introduce orcad pspice. There are examples of all four types of standard simulation and a selection of different plots. The following figure shows the selection of a dc voltage source or battery. 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. If we need a graphical output, pspice can transfer its data to the probe program for graphing purposes. All independent voltage and current sources that have ac values are inputs to the circuit. Overriding cd4000 power supply voltage throughout a design 469. Introduction to orcad capture and pspice professor john h. So far we have covered circuits with resistors and independent sources. This will create the symbol for a dc voltage source to be. Create a pspice voltage source that references a file as its source, learn how to make it repeat and then use the results from pspice to make a.
Tf dc sweep the dc sweep analysis varies a voltage source over a range of voltages in an assigned number of. 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. Use the same procedure to place two dc voltage sources vdc in the source library and one current idc in the source library in the drawing window, as shown below. Vsin sinusoidal voltage source model online documentation for. Use pspice and ac analysis for a single point 60 hz to obtain the node voltages v1 and v2, and current in r3. Vcontrol is the zero value voltage source used to measure the controlling current the positive current flows into the positive terminal of the controlling voltage source. Install the following components from the cd that comes with the textbook. Ese 216 pspice with orcad capture penn engineering. 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 difference between ac and dc is the reason your laptop has a bulky external power supply between itself and the wall outlet. Click your mouse at two different locations, you will see that you have inserted two dc voltage source instances on schematic.
Below is an example of a schematic created with orcad capture. Vsrc dc voltage source model online documentation for altium. Jan 24, 2014 overview of entering circuits with controlled sources in orcad. Pspice voltage source from file part 1 of 2 youtube. Pspice voltage and current sources watch more videos at videotutorialsindex. Spu has a site license for only three concurrently operating versions at once time. And pspice is a product of the orcad corporation and the student version we are using is. Apr 24, 2019 dc travels in only one direction within a circuit, plots as a straight line, and provides constant voltage and current to most electronic circuits such as the pcbs you design. I need to use orcad for a class i am taking in school. Modeling independent and dependent voltage source problems. This source produces a constant dc voltage output and is generally used to power the.
The sweep type is set to linear, starting from 0 to 10 v in steps of 1 v. This short video focuses on simulation of a simple dc circuit using orcad. 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. Voltage and current sources are in the sources library. In the part list, select the part vdc and then click the place part button or hit enter.
Direct current is defined as the constant flow of electric charge traveling from high potential to low potential. These two spice simulation methods sweep a circuit over a defined voltage or frequency range. These are important if you want to measure the voltage at a point or the current. Ive tried searching for somewhere else to download the library, but no luck so far. Droid tesla pro for android free download and software. Use pspice and ac analysis for a single point 60 hz to obtain the. In part 2 we showed you how to run a fundamental operating point analysis to simulate current and voltage at a single reference point. Pspice simulation profile an overview sciencedirect topics. Understand how to design and test power supply in schematic capture. The pspice ground has symbol, which is different from ordinary ground with symbol. Dc voltage source or r resistors, the program will not allow me to add a library, when i click on the place pull down menu and select part the vertical bar. Getting started with orcad capture cis, release 15.
Place the part by clicking in the schematic, and then press escape to stop placing dc sources. Specifying the type of analysis and simulation bias or dc analysis dc sweep simulation 2. The output from any dependent voltage source depends on the electrical behavior at some other location in the circuit. Just point it any place inside the drawing area and left click once. The simulationready dc voltage source component vsrc can be found in the simulation sources integrated library \library\simulation\simulation. Pspice models can be created and edited in the pspice model editor, which can be started in standalone mode from the start menu, pspice simulation accessories model editor, or by highlighting a pspice part in the schematic in capture, rmb edit pspice model. You specify the output voltage by using the constant voltage parameter, which can be positive or negative. This tutorial introduces the dependent source elements in pspice. After that you will see a dc voltage source symbol moving with your mouse. Chapter 3 dc analysis abstract 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 selection from analog design and simulation using orcad capture and pspice, 2nd edition book. If you examine the way some simple voltage sources behave, youll quickly find that the voltage sources only appear to be independent in certain conditions.
Pspice simulates the circuit, and calculates its electrical characteristics. Every pspice project needs a pspice ground to establish a reference potential. How to download and install l pspice student version 9. Dc travels in only one direction within a circuit, plots as a straight line, and provides constant voltage and current to most electronic circuits such as the pcbs you design.
Dc circuit is the circuit in which direct current source is used. If a value for the ac magnitude is omitted but a value for ac phase is defined, the circuit will parse to the simulator ok, but the spice netlist will not contain any ac information for the source. Download orcad free trial now to have a full evaluation of all orcad tools with no functionality limitations. If you need to download adobe acrobat reader go here if you need to update a. Put it in the circuit and click on it to select its parameters. 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. Since we need only one source, we click the right mouse button to stop placing sources and the mouse pointer returns to its original status as shown in figure 7. This time, replace the dc voltage source with a time varying voltage source, such as vpulse. Personal simulation program with integrated circuit emphasis author. The dc sweep analysis varies a voltage source over a range of voltages in an assigned number of. Electrical and computer engineering outline introduction.
Using spice to model dc motors precision microdrives. In principle you can download the demo version from. Up to now, these tutorials have discussed only the most basic types of sources. Personal simulation program with integrated circuit emphasis. Power supply in schematic capture and circuit simulation. Circuit elements and models university of california. How to download and add new libraries pcb design cadence. For a dc sweep analysis, select pspice new simulation profile and select dc sweep for the analysis type. If you dont want dc source anymore, just press the esc button on your keyboard and you will exit the mode of inserting dc source. Vsrc dc voltage source model online documentation for. 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. Voltage sources, in addition to being used for circuit excitation, are the ammeters for spice, that is, zero valued voltage sources may be inserted into the circuit for the purpose of measuring current.
Unfortunately, the links on the second webpage may be outdated, and dont seem to link to a download of the relevant libraries. These include the independent dc and ac voltage and current sources, and the simple voltage or current controlled dependent voltage and current sources. Download orcad free trial now to see how orcad can help you boost your creativity, productivity, and plain old getting things done. This tutorial is written specially for cet 3464 software programming in engineering technology, a course offered as part of bsecet program at valencia college. Vpulse pulse voltage source model online documentation. This research paper focuses especially the design and simulation of dcdc converters. Apr, 2017 this short video focuses on simulation of a simple dc circuit using orcad. Jun 20, 2019 modeling independent and dependent voltage source problems. This will display voltage, current and power next to the element like the diagram below. The difference between ac and dc is the reason your laptop has a bulky external power supply between itself and the. Overview of entering circuits with controlled sources in orcad.
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. The values you type in for v1 and v2 will depend on the amplitude specified on the. Nc1 and nc2 are the positive and negative terminals of the controlling voltage source, respectively. Pspice voltage and current sources watch more videos at lecture by.
So i thought to take an existing one and modify it in model editor. Use the same procedure to place two dc voltage sources vdc in the source. Ac analysis close the simulation and modify the circuit, replacing the vsin source with a vac source. Dc offset voltage of the signal generator in volts. 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. In pspice you may use a voltage source with value of zero in series with any other element to act as an ammeter. Pspice is now a component of the orcad product family. I want to simulate a dc dc converter in pspice but i can not find some libraries that include this part. This allows you to make a plot of a voltage or current in the circuit as a function of the dc source voltage. In blue is the power used by the element, in red is the current, and in maroon is the voltage.
Perfect for students new to electronics circuit design and construction,hobbyist and. It should be 3db smaller than the peak voltage of vin 0. Download pspice for free and get all the cadence pspice models. The output voltage of an op amp at dc can be expressed as v 3 a 0d v 2. File path of this library folder must not have the korean. Transforming the voltage source to the current source and writing the node voltage equation results in. Place the resistors, capacitor from the analog library, and the dc voltage and current source. Similarly, the circuit that contained electric current flow in only one direction is known as direct current circuit. Sometimes in circuit analysis, we would like to replace part of a circuit with something simpler. Can anyone let me know where to find these libraries to download. Independent and dependent voltage source problems in. Options include calculating the detailed bias points for all nonlinear controlled sources and semiconductors.