Questions tagged [orcad]

OrCAD is an EDA (electronic design automation) suite that includes schematic capture, PCB layout and several other related modules.

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net class management in ORCAD CAPTURE

I am currently building a hierarchical schematic in Orcad Capture. I understand that when nets from different schematics sheets are connected together in the hierarchy, they are added to a "flat net"....
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24 views

OrCAD: Uniqueness/Scope of Net Aliases, Busses, and Net Groups, Hierarchical Ports, and Off-page Connectors

I am using Allegro/OrCAD Capture. I need some confirmation about the scope of some various types of nets in Allegro/OrCAD Capture, particularly with regards to hierarchical design and projects with ...
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1answer
29 views

How can I simulate the circuit with floating node in Orcad simulation?

I simulated to test 4n25 optocoupler. 6 pin in 4n25 is base of output transistor. According to google, 6 pin can be not connect pin (NC) because input LED generate the base signal. Orcad ...
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1answer
18 views

Allegro padstack not showing my pads

I have implemented a schematic for an IC (BGM13S32F512GA-V2R) and I am trying to create a footprint but when I try to place the padstacks, they do not appear in the default library... so I went into ...
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5answers
1k views

How should chips with pins on bottom be drawn?

When you are drawing a schematic for an IC, and there are pins in the bottom center (in my case I am drawing for the BGM13S32F512GA-V2R), how should they be drawn? I have looked into some beginner ...
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1answer
74 views

iv plot for NPN BJT

I have done a “parametric sweep” of the DC voltage source VCC ranging from 0 to 30 V and on the current source with values of iB = 0,50,100,150,200, and 250 µA. Below is the plot iC vs vCE (vCE being ...
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1answer
26 views

Orcad search using Tcl

I mostly use Orcad Lite to browse schematics, doing a lot of component/net search. How can I search using Tcl console?
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28 views

OrCAD CIP CIS Part number

I have added some parts using CIP function in OrCAD and they can be added in Schematics as well. Problem is when i look at part manager window of that schematics, those parts have not been assigned ...
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25 views

OrCad IBIS to PSpice translator creates multiple models for my part

So I used the IBIS translator in PSpice Model Editor for an ADC (AD9343). it produces multiple .subckt models (one for Input, one for Output, one for IO,etc...). Now when im creating a part, it lets ...
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17 views

OrCAD PSpice: How to import an excel dataset of frequencies and their corresponding voltages as a variable source to simulate a noise

I have been trying to simulate a variable voltage source which has different voltages at different frequencies. I have around 15,000 points on excel for the same. I found ...
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4answers
104 views

Can a PCB footprint be extracted from a solid model?

I usually just make a PCB footprint if I need it (Solidworks PCB, Altium, Protel99, OrCAD, etc). I'm an electrical engineer. I've seen very nice 3D solid models for some parts and I wonder if the PCB ...
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1answer
104 views

In OrCAD PCB Designer how do I get the trace width of a signal

In OrCAD PCB designer, how do I see the trace width of a signal? When I click the "i" or "Show Element" icon it gives me everything but the trace width.
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1answer
39 views

Hybrid library vs normal one

We use Orcad and we want to update our libraries. When we place a part and want to rotate it,we don't like the layout of the labels(names,values etc) and thus have to manually reposition them. It's ...
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153 views

Buck converter simulation in orcad

I am trying to simulate a Buck-converter circuit in Orcad, but no matter what I change the input voltage to I still get the same output voltage result. I tried this in Multisim and got the same issue. ...
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95 views

PSpice error: '*$' is not a model parameter name

I am using OrCAD PSpice Student Edition, version 9.0, fairly old version (1999) but its what we have access to. I've had this problem almost every time I use custom parameters for any model, which is ...
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37 views

integrator op amp pulse to square signal

I´m working on a integrator circuit using op amp but i´m integrating a pulse wave but in the output of the integrator the signal isn´t in a stable state meaning stable state as the stable signal with ...
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1answer
90 views

Orcad Capture CIS, How to change transistor area?

If using the QbreakN and QbreakP, how could I change the relative emitter areas of each individual transistor. I need to match the parameters like in the figure below:
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138 views

Voltage Multiplier Problem

I´m working on a voltage multiplier with 5 stage, i´m using the same capacitor and i think that my problem is the current load but i actually think that with a resistor in the output of the multiplier ...
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28 views

Design pads and import to OrCAD PCB; or design directly in OrCAD PCB designer after importing other components?

I have a problem with layout design of pad. After creating the netlist and doing the routing, I want to add some single long pads to the board without packages to be able to solder wires on these pads....
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139 views

What is the binary format of the OrCAD .OLB files?

I want to auto generate .OLB files for my own components, so I need to either use Orcad Capture scripting, or alternatively write the binary .OLB files myself. Is there anybody that have seen a ...
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1answer
57 views

How to show or print all the parts in an OrCAD library (OLB) file?

I have a .OLB file for OrCAD schematic where there are multiple part in. I an open the .OLB file using File => Open => Library, and I can also successfully place parts in a design. From previous ...
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1answer
39 views

Sine source outputting wrong signal

I was trying to simulate a circuit on Capture CIS lite, but I kept getting an output signal which was nothing like I expected. When I tried putting the probe on the sine source, it seems like the ...
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306 views

Orcad Schematic Capture. Instances vs Occurrences

Using Orcad capture to create a multi-page hierarchical schematic I used the "Annotate..." option to renumber all parts. First set the them to "?" then incrementally update them. However, after this ...
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4answers
142 views

What is a fast built in op-amp to use in OrCAD Pspice Capture? Or how can I design one?

I am trying to simulate a 100 kHz FitzHugh-Nagumo oscillator in OrCAD Pspice capture (this paper gives the motivation for the configuration, but is for a 180 Hz oscillator, https://ieeexplore.ieee.org/...
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60 views

Interpretation of Time Domain simulation output

I have the following circuit and I want to know the voltage on each node and the current on each loop. I've run the Time Domain simulation (I'm not sure of the differences between this and Bias Point ...
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1answer
50 views

How to Reconfigure a Current Sense Amplifier Pspice Model

I downloaded the .lib Spice library for the MAX4172 and imported it into OrCad, available from: https://www.maximintegrated.com/en/products/analog/amplifiers/MAX4172.html/tb_tab2 The library file ...
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2answers
68 views

Amplifier MOSFET (25m - 5V)

I dont know how to amplify a signal of 25mV to 5V amplitud signal ((frequency of audio input cell phone)). I have this circuit so far:
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3answers
304 views

Integrator (Op amp) Simulation OrCAD

I'm working on in a integrator op amp and actually i make the desing in a breadboard and is working but in time of simulation is like there is not voltage in the output of the op amp. I don't ...
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1answer
323 views

Differentiator (Op amp) with a square wave

I'm working on a differentiator (op amp) with a unitary gain i calculated the value of RC and the period with a frequency of (1kHz). Figure 1. Differentiator Schematic (OrCAD). This is the schematic ...
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1answer
58 views

Spice model search with advanced sorting functionality

Does anyone know of a search engine like Mouser/Digikey where you can narrow down parts based on voltage/package type/etc., but exclude all results without PSpice models? Unless I'm doing it all wrong,...
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1answer
173 views

Allegro OrCAD Capture: Crashing after DRC check [closed]

Issue: The OrCAD Capture software by Cadence is continually crashing. The version I have is SPB_16.5. Problem: I can run ONE DRC check fine, however; when I run another DRC on my schematic, the ...
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335 views

How i fix this PSPICE orCAD problem? - Model D1N747 used by D_D1 is undefined

From [PSPICE NETLIST] section of C:\SPB_DATA\cdssetup\OrCAD_PSpice\17.0.0\PSpice.ini file: .lib "nomd.lib" Analysis directives: .TRAN 0 500ms 0 .OPTIONS ADVCONV .PROBE64 V(alias()) I(alias()) W(...
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1answer
170 views

Op amp AC simple supple (Buffer) LM324N

I´m working on a proyect and i use OrCad/Spice to simulate the op amp that i gone use and my Voltage(output) signal is Constant and my Voltage(Input) is sinusoidal.
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160 views

Can Orcade (PSPICE) actually simulate MOV(Varistors)?

I am using Cadence-Orcade Lite. In it I have a circuit in which I want to note the behaviour of varistors (MOV, PSPICE models exist in Orcade for various varistors). I am using LS40K680QP/EPC Model ...
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1answer
831 views

KiCAD Component Pad Clearances

I'm using KiCAD version 5, and I have an issue with it. Previously, I've been using OrCAD up until the point to where I needed multiple layers for my board. So, I redesigned my components, but I'm ...
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1answer
49 views

Anomalous capaictor discharge in pSpice with transient analysis

I'm doing a Transient analysis of the given circuit.My question is why didn't my capacitor discharge fully,according to the graph?
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2answers
180 views

ERROR — Digital simulator not present [closed]

Can you tell me how can I fix this error?
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1answer
491 views

Simulating oscillator in LTSpice vs Orcad

I'm busy simulating a Hartley oscillator that I have designed for a 64.5kHz oscillation frequency. I first simulated in LTSpice and obtained the results below which I am happy with: LTSpice ...
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1answer
529 views

Adding a Vacuum Tube library to OrCAD CAPTURE

Introduction I wanted to mess with Vacuum Tubes and learn from old electronics to show my granpa how they worked, specially radio (AM and FM). I downloaded a library of vacuum tubes but could not ...
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51 views

Interchangeable Parts in OrCAD CIS

We just started using OrCAD Capture CIS at the company I work for, and we were wondering how can 'treat' interchangeable parts. When we migrated our current library we found that we had several caps ...
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1answer
49 views

Is there any simulation environment provided with TDC-GP1 counter frimwaire?

hello everybody I want to simulate an electronic circuit, I used TDC-GP1 (Time to Digital Converter) I searched in Proteus and in Pspice Cadness but didn't find this part in library, is there any ...
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38 views

OrCAD Capture Question: Two traces in same plot - where do they cross?

If I have two traces in the same simulation plot, is there a way that I can determine when they are equal to each other?
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51 views

Plotting results problem using Pspice

I am performing a simulation of an eletronic circuit using Pspice and OrCAD. I want to know how the circuit will behave for long periods of time (in this case, 500s). After the simulation this weird ...
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51 views

OrCAD Capture Question: Replace Bias Voltage Marker

If you delete a bias voltage box (pictured below), how do you go about replacing them?
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1answer
669 views

Alternative spice model of TI CD4066b

I'm busy working on a uni practical in which we are required to construct a chopper modulator and I'm busy creating a schematic in orCad to run some simulations. I'll be using a Texas Instruments ...
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1answer
2k views

OrCAD PSPice less than 2 connections error while simulating

I just started using PSPice and I don't know much circuits theory but I need to simulate this circuit and find Vout/Vin: I did this using capture but after running simulation I get this error: ...
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219 views

OrCAD: Determining which trace in Secondary Sweep is which after simulating

When you run a primary and secondary sweep, there are multiple sets of traces for the same signal, where each individual trace represents a different value from the secondary sweep. In OrCAD 16.0, I ...
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112 views

Can't figure out what connector is that. Orcad 9.2

I'm trying to reproduce this as I'm learning to use orcad 9.2 but there is that CN1,2,3,4,5 connector I can't find in any of the pre-installed libraries. Can anyone tell me where can I find it and ...
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6answers
2k views

How to determine voltage across LEDs in a circuit?

I simulated a basic circuit in Orcad but I don't know how it found voltages(6.08 V and 3.04 V) on the nodes? How do I calculate those voltages mathematically? I am attaching three image files of ...
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243 views

OrCAD Allegro PCB Designer Ground Plane

i want to assign a black color to Ground Plane (GND 0), it's shape is polygon and it's color is gray like shown on below image, i have two questions: is this a possible polygon shape to implement ? ...