Pspice Definition and 86 Threads

OrCAD Systems Corporation was a software company that made OrCAD, a proprietary software tool suite used primarily for electronic design automation (EDA). The software is used mainly by electronic design engineers and electronic technicians to create electronic schematics, perform mixed-signal simulation and electronic prints for manufacturing printed circuit boards. OrCAD was taken over by Cadence Design Systems in 1999 and was integrated with Cadence Allegro since 2005.
The name OrCAD is a portmanteau, reflecting the company and its software's origins: Oregon + CAD.

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  1. L

    Connecting Current-controlled Voltage source in PSpice

    Homework Statement Referring to the circuit, I need to verify this by PSpice simulation. I have calculated gain parameter k = 2.5 when Rin = 0 and the current flow through the 0.5S(2 ohm) resistor = 0.5IoA, which is correct. The Attempt at a Solution Firstly, I considered Io as a 1A DC...
  2. J

    How do I use PSpice to complete Part C of my assignment due today?

    Pspice help due today! Homework Statement http://img716.imageshack.us/img716/1407/pspice.png Homework Equations None that I know of The Attempt at a Solution What I need help on is Part C, I don't get what they want and what would be the correct answer? Please help!
  3. A

    How can ORCAD PSPICE help with simulating an LM324 op amp circuit?

    ORCAD PSPICE : LM324 Help ! I am making a simulation of my project on Intercom using LM324 opamp as preamp and before Power amp ckt. But I am having trouble with that. I tried making an inverter using LM324 with pin 11 as ground. But this does not give correct result. Although the...
  4. C

    PSPICE Voltage Controlled Current Source Question

    1. My Attempt I need to convert the book problem of a circuit with a voltage controlled current source with one in PSPICE. I am attaching a picture which shows my attempt. I think I have it wrong but it might be right. So if someone with knowledge in EE and PSPICE could help me it would be...
  5. J

    Where Can I Find a Model for Dual Supply SPDT Analog Switches for Orcard 16.2?

    Does anyone have, or know where to find, a model for one of these dual supply, SPDT analog switches?
  6. R

    Where can I find more PSpice models for Op-Amps?

    Hello. I use P-Spice student version and I regret that standard librairies offer very few number of models, especially for Op-Amp's. Is there sites where I can download more components models.
  7. S

    How Do You Design and Troubleshoot a Ring Oscillator in PSpice?

    Design a digital ring oscillator using logic inverters that have propagation delay times of tPLH = 28ns and tPHL = 42ns. The Attempt at a Solution I'm using a general ring oscillator design using 3 CMOS inverters like this...
  8. S

    How do I create a 0-3V TTL waveform at 20 Hz in Capture (Pspice)?

    Can someone explain to me how to create a 0-3V TTL waveform at 20 Hz in Capture (Pspice)? - edit: Figured out how to adjust the pot, but still can't figure out the TTL waveform.
  9. S

    Understanding 20Hz TTL Waveform in Pspice Capture

    A 20Hz TTL waveform is applied to the circuit... The Attempt at a Solution - I'm working an activity for my lab tomorrow (not actually due for any points, just to help us get an understanding of the lab), but I'm not really sure what it means when it says a "20 Hz TTL waveform"...
  10. S

    Where can i get free pspice program online?

    where cn i get free pspice program online?
  11. F

    Solving PSPICE Model of Astable Multivibrator

    Hi everyone... I am trying to model and simulate an astable multivibrator using Pspice but i am having some difficulty... Both transistors are coming on at the same time so I never get the oscillations I expect. What do I need to do to make the model act more like a "real life" astable...
  12. A

    What is causing my Pspice simulation to fail?

    I have a simple circuit 2v supply R and Diode in Pspice that I'm trying to run a simulation on. I get the following message. "This action cannot be completed because the other program is busy. Choose 'Switch To' to activate the busy program and correct the problem." I have no idea what the...
  13. I

    PSpice opamp and variable questions

    Homework Statement We're modelling a coax-cable. This is the first cable segment (/m): .. ----._.----./. ----dR1----dL-----------... ..|.........|...|... Vdc.......dR2...dC8... ..|.........|...|... ..-------------------------------------------GND ... Empty Space A short DC...
  14. G

    Pspice power system on an aircraft

    I am working on modeling a power system on an aircraft right now, the problem is that I have loads that are constant power drawing no matter the voltage. They will draw 5kilowatts no matter 28 volts or 22 volts. My problem is modeling them. I can model them at one particular voltage but I want a...
  15. S

    No more student version of Pspice?

    What will academia do? (well, you can still request a CD, i guess)
  16. G

    Troubleshooting Opamp Saturation in Orcad Pspice 9.2

    Hello Everyone, I am trying to model a circuit using Orcad Pspice 9.2 I am trying to solve the time when the opamp saturates with maximum voltage operation of 10v and -10v. I am applying different voltages to the circuit, when I do the transient analysis, i am not getting the right time. For...
  17. H

    Using Multiple Data Sets on One Graph in PSPICE: Changing X Variable

    Hi, I'm running a simulation on PSPICE in which I am trying to plot Vce against Ic for various base currents of a transistor, and I therefore need to have multiple data sets on one graph. I've managed to do this by using the DC Sweep simulation with the primary sweep on the collector resistor...
  18. E

    How to Graph a Sine Wave in PSpice for a Specific Time Interval?

    Hey guys Just wanted to know how to graph waveforms in PSpice Like graph v= 3*sin(5*t) V, in interval 0<t<.05s Please help, need to know quick thanks
  19. L

    PSpice Simulation - Bridge Rectifier

    Hi, I'm having a problem while running a simulation of a Bridge Rectifier on PSpice. This is my circuit schematic: http://img521.imageshack.us/img521/276/q1tasks2schematicsxp3.jpg Vs is at 15sin(100*pi*t). And this is the input and output waveforms plotted by PSpice...
  20. B

    EGINNERS GUIDE: Simulation with Pspice RCL Circuit

    Hi, It is my first encouter with Pspice program. I want to simulate a RCL circuit to see how it react at different frequencies. I made the circuit and create a netlist. The circuit has no errors( when I look at the output file) but I don't know what to do to produce a curve. please can...
  21. J

    Get PSPICE for 'Microelectronic' Textbook Examples

    Does anyone know where I can get a copy of pspice? I just want to try out the examples in the Sedra and Smith's "Microelectronic" textbook examples.
  22. A

    Pspice Help: Plotting VTC of Circuit with Orcade Capture Lite

    I need help plotting the VTC of a given circuit. I tried dividing the output signal by the input signal put that does not work. Is there a function I can use to achieve this? I'm using Orcade Capture Lite by the way. Thanks in advance.
  23. R

    Pspice: derivative function in probe

    Hi Guys, I am stuck at a point and needs help. The thing is I am doing MOSFET inverters using Pspice. I am getting its VTC (voltage characteristic Curve) But I don't know how to get derivative of this curve in order to obtain some parameters required for Noise margin. Here is the file...
  24. R

    Help with Pspice Capture Bias Point Calculation Errors

    Hi all, This is first time I am using Pspice. I have 9.1 student version. I am using Pspice capture user's guide for reference. Following an example from there, I was trying to do bias point calculation using Capture. I have no knowledge about Pspice and I am following the user's guide only...
  25. A

    PSpice Schematic: Drawing a Thermistor & Assigning Voltage

    Hi. I'm drawing a Thermistor on PSpice Schematic to show a figure of the Thermistor for the lab write up but I am having trouble drawing the current "i" on PSpice Schematic. Could you help me out and tell me how to insert the current on my schematic? This is only the second time I have ever used...
  26. K

    Learn to Use OrCAD 10 for 1-Channel Audio Amplification

    Hi...I'm trying to learn how to use these programs. I have the demo versions of OrCad 10...The whole suite. I've been trying to lay out a basic 1-channel audio amplification schematic. I've attached what I have so far. Can someone explain to me how to add a power source, and how to simulate...
  27. J

    Designing a Circuit in PSPICE for Fast Bidirectional Switching

    Hi, I'm designing a circuit in pspice and having some trouble with the switching. In my circuit in pspice I'm using an ideal voltage controlled switch model "S" and using a vpulse to control it. My current through the switch needs to be bidirectional, and maxing around 80mA with an average...
  28. M

    Ael Download Orcad PSpice Software - Help Michael

    PSpice software needed :( hey guys. i urgently need the Orcad Pspice software :( please if anyone has a link from which i can download the software , i would be very thankfull ... P.S this link http://www.cadence.com/products/si_pk_bd/pspice.aspx is not working ... Thanks...
  29. M

    Download the Orcad PSpice software

    Can anyone please tell me from where can i download the Orcad PSpice software ? i really need it... I would be thankfull if you give me links ... thanks
  30. M

    PSpice simulation vs temperature

    I am trying to define the sensitivity of a piezoresistance as a function of temperature using PARAMETERS. The equation is: {S=S0(1-TCS(temp-25))}. The problem is that "temp" doesn't change during a Temperature Sweep, but I don't have any error either. Could you help me?
  31. Cyrus

    Pspice Capture Lite: Ext. Library & Voltage/Curr. Dependent Source

    I installed Pspice Capture Lite from my student cd that came with my EE book, but the only things in the library are what I DON'T need! :cry: It has no analog voltage or current source!? Does anyone have or know where I can download an extended library of parts? Also, can anyone tell me how to a...
  32. denian

    Understanding PSpice DC Sweep Analysis: Purpose and Setup

    i know how to set up the DC sweep analysis, but what is it actually for? i see both axes are voltages. like transient analysis, i know exactly what it is for. it shows a time-domain voltage simulus. hope for a brief description on it. thank you very much.
  33. S

    PSpice question: How do I plot equivalent impedance v. frequency?

    How do I plot equivalent impedance v. frequency? I'm already in AC mode so the frequency is taken care of, but I keep trying to manually write trace expressions for zeq and nothing is working. any tips? EDIT: What does the trace expression IP(some element) mean? I think its related. EDIT2...
  34. C

    Simulating Signals in PSPICE Without Re-Adding Traces

    Is there a way to tell PSPICE to graph a signal without having to go to Trace>Add-Trace and selecting the signals each time? If I added a signal and then change a component value slightly and run the simulation, is there a way I can refresh the signal without having to go through the add trace...
  35. S

    How Can I Simulate FM Modulation in Pspice?

    Hello all, I am an Electrical Engineering student and I currently building a small, simple, FM Transmitter. I would like to be able to simulate this in pspice but I have had no luck. I can get a sinusoidal output, and gain, but no Frequency Modulation. Does anyone know of a good pspice...
  36. D

    Troubleshooting PSpice Schematic: VDC=10V

    In my schematic, i have vdc = 10v, a resitor,ground and a capcitor. All 3 are in series except ground. When I run simulation, I get a straight line at 10v instead of a curve from 0 to 10v. I put the voltage probe between resistor and cap btw.
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