Because it does not use supernodes in its version of nodal analysis, it must create an extra variable for the current through every voltage source. Since the amplitude of the voltage is 10 and the amplitude of the current is 4ma, the current looks like a flat line. Otherwise, when the simulation ends, use traceadd trace to get. And pspice is a product of the orcad corporation and the student version we are using is.
Pspice has many excellent models of transistors, thyristors and other devices that react to changes in a base circuit or a gate input. Finally, i plotted the voltage across the diode and used the cursor to find where the diode voltage was 700mv. Xiong this tutorial will guide you through the creation and analysis of a simple mosfet circuit in pspice schematic. In sweep type, choose linear, start value 1, end value 10, increment 1. Since we want to plot the voltage and current versus time, the transient analysis is used. I have the main textbook, i just need the booklet that comes with the bundle. The output voltage start up ramp is internally controlled to provide a controlled start up and eliminate overshoot.
Pspice voltage and current sources watch more videos at videotutorialsindex. Feb 07, 2018 pspice voltage and current sources watch more videos at lecture by. Discover features you didnt know existed and get the most out of those you already know about. Introduction to dc sweep, ac analysis and transient analysis duration. Introduction to pspice for electric circuits, 10e james w. Not a realistic or practical circuit, just something that will give me the behavior that i want. In this pspice tutorial video, we show how to use dc bias points to simulate the 2n3904 bipolar junction transistor with pspice orcad. Sometimes one would like to figure out voltage, current, or power for a given circuit.
The dc sweep analysis varies a voltage source over a range of voltages in an. Cadence pspice technology offers more than 33,000 models covering various types of devices. In many cases, we need to use switches that open and close at certain times or under certain conditions of voltage or current. So, if you need to build a more complex circuit, you will have to try another version of pspice. 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. Connecting currentcontrolled voltage source in pspice. The current source i3 has a value of 12ma and flows from node 3 to node 5. Using pspice for circuits with dependent sources csun. If you doubleclick the e1 dependent voltage source in pspice, you may find the gain property. Download pspice for free and get all the cadence pspice models. The circuit diagram below is what you will build in pspice. Pspice schematic with current controlled voltage source note that the right side of the device goes where the voltage source appears in the circuit.
Here we will be using the circuit 1 as a reference. Simple dependent sources voltage controlled dependent voltage source. 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. Education software downloads pspice student by cadence design systems, inc and many more programs are available for instant and free download. These current variables can be used in equations for dependent sources, and their. You can either select the current and multiply it by or plot it on a separate y axis. Sep 18, 2015 looking for a simple way to limit the current from a voltage source in ltspice. Pspice will change the voltage source v1 from 1 to 10 in linear increment of 1. 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. Pspice orcad tutorial modeling npn transistor with.
How to implement dependent sources in orcad pspice. How to use a voltage controlled current source in pspice. Altium techdocs are online documentation for altium products, providing the basic information you need to get the most out of our tools. Hitting a total mental block with this, for some reason. What i want is for the source to act normally until the. Is there a converter in pspice for current to voltage. Oct 28, 2010 homework statement referring to the circuit, i need to verify this by pspice simulation. Hsrc currentcontrolled voltage source model online. Cir input file is to draw the schematic figure of the circuit to be tested. Pspice generated file in orcad capture rf design cadence. Youre looking for a current controlled voltage source, this is already included in spice as h source. 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. Mar 01, 2020 furthermore, you can simulate the behavior of a circuit at a given intensity, amplitude or voltage.
Select start engineering cadence capture from the start menu. The circuit is limited to 64 nodes and 10 transistors. Cadence pspice technology offers more than 33,000 models covering various types of devices that are included in the pspice lite software. I drew the circuit in orcad capture and didnt specify the voltage on the source. Introduction to orcad capture and pspice professor john h. The big disadvantage of this software version is that the circuit simulations are limited. Spice tutorial purdue engineering purdue university. Pspice schematic probes are placed in the circuit to measure the voltage across the resistor and the current through the inductor. How to use a voltage source voltage controlled in pspice. 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. Overriding cd4000 power supply voltage throughout a design 469.
Explore 8 apps like pspice, all suggested and ranked by the alternativeto user community. Legacy versions of pspice using schematics for schematic capture are available as described below. There are examples of all four types of standard simulation and a selection of different plots. For instance, suppose we wanted to make the voltage source above model. The answer is that pspice, like other versions of spice, uses voltage sources to measure current. The first is a 0v voltage source, which acts as an ammeter, to measure the current input and then the actual current controlled voltage source that references it. Pspice ad reference guide montana state university. Vsin sinusoidal voltage source model online documentation. Ensemble, nc verilog, openbook online documentation library, orcad, orcad. The left side is connected so that the controlling current in this case i.
The ac complex voltages and currents are calculated at each frequency. Because the analog and digital simulation algorithms are built into the same program, pspice ad simulates mixedsignal circuits with no performance degradation because of tightly coupled feedback loops between the analog and digital sections. The orcad academic program provides students, educators, and research clubs with a complete suite of design and analysis tools to learn, teach, and create electronic hardware. Then we show how to use a current controlled current source. Start the orcad schematic capture program start programs orcad 15. Then i set up a simulation profile to sweep the voltage source over a range of voltages. Orcad is committed to offering everything you need to be successful in todays competitive job environment. Close the library selection window and we will begin the construction of the following circuit. Using pspice to find the thevenin equivalent circuit. Pspice voltage and current sources watch more videos at lecture by.
In the analysis we will find the id current and the vds voltage at the given values of vdd and vgs. The current controlled voltage source actually implements two individual devices, as can be seen from the netlist template. This allows you to make a plot of a voltage or current in the circuit as a function of the dc source voltage. Figure 1 above shows an example of a circuit with a. Sep 07, 2018 popular open source alternatives to pspice for linux, windows, mac, web, software as a service saas and more. 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. Cadence pspice ad is the defacto industrystandard spicebased simulator for system design. Getting started with orcad capture cis, release 15. One problem though, pspice ploted the current and the voltage on the same axis.
They are reportedly unstable under windows later than xp e. Download pspice lite for free and get all the cadence pspice models. The source vac is a 440 hz source with a peak amplitude of 10 volts. Instructions for ee 42 pspice assignment you can install them. Pspice gives a quick way of calculating these values.
The attempt at a solution firstly, i considered io as a 1a dc. This uses a constant amplitude ac source whose frequency can be varied over some range. An annoying problem in pspice is the inability to change some properties of the part. How can i get a version of pspice using schematics. 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. It is not suitable for use with supplies that provide current sinking capabilities. Page 2 of 27 creating circuits using pspice start orcad 10. While it is as approximation of a typical smps supply, it is intermediate between an ideal voltage source used as a model and an smps supply model.
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