Pspice Definition and 81 Threads

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...

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

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.

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...

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.

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"...

where cn i get free pspice program online?

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...

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...

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...

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

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...

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...

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

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...

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...

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.

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.

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...

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...

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...

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...

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...

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...

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

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?

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...

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...

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...

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...

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.