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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Common emitter with low voltage input

I have to do a project involving a common emitter amplifier. The only given data is: the amplitude of the input signal is 100u, and offset voltage is 0. I need that signal to be amplified. But my ...
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1answer
2k views

Triangle waveform in OrCAD

I faced with problem in my project. I have to build circuit in OrCAD that should to generate triangle signal. I tried to use IC 555, but get sawtooth signal. After that i used hours and tens of ...
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0answers
540 views

OrCAD - diode characteristic with different temperatures

I have a basic circuit with diode, resistor, and a voltage source. I am getting the following error when trying to change the X Axis variable to Vd (diode voltage): ERROR(ORPROBE-3217): Only 1 ...
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2answers
2k views

Parts footprint list in Orcad Capture

I intend to design my first PCB and i am using Orcad suite. So, i built the theoretical circuit and before proceeding to the next step i have to put the footprint values for each part. I have decided ...
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3answers
1k views

How to do a DC sweep on an oscilloscope?

I created the circuit for a project of mine on Orcad Capture (Pspice). I ran a DC sweep on it and got the desired output. Now I have built the identical circuit on a breadboard but I am not getting ...
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1answer
2k views

having trouble finding phase angle on Pspice

The only issues I can see is that my circuit contains a parameter called AC from the AC voltage supply, whereas the one in the example does not ! I don't know how it would work without AC voltage ...
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1answer
38 views

Capacitors selections for proper bandwidh

I need to design an amplifier in orcad with Vin = 10mVac Vout = 2,5Vac RLoad = 50 ohm The low frequency fLow = 50Hz fHigh = 20kHz I came up with this schematic I need to select the right value ...
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1answer
3k views

2 Pin Wire Terminal Connector in OrCAD

I am searching for 2 Pin Wire terminal connector in orcad. Can anyone suggest me where i can find Wire Terminal Connectors? Under which category in orcad library can i find 2 Pin wire terminal ...
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2answers
860 views

Toroidal Coil on OrCad Pspice

I am trying to simulate the circuit below. I am new to this software. How can I represent the toroidal coil named F and P in OrCad Pspice software? Thanks
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2answers
3k views

How to flip in/out off page connector in OrCAD

Is there any way to quickly flip the in/out direction of off page connectors in OrCAD (Allegro Design Entry CIS)? I've run into the problem numerous times where I place a connector with a bunch of ...
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1answer
864 views

How to use a subcircuit in capture / spice

I am wondering how to add an IGBT .subckt file to a schematic in Orcad Capture. I already found out that if you have an '.NIGBT' model, you can use the Breakout library. But I cannot find out how to ...
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4answers
1k views

howto align mount holes in 2 pcb the right way?

I'm tring to make some sort of shield board (it's not an arduino): first board was made in orcad, I have source files gerbers and so on... I'm making a 2nd board in eagle. When trying to align the 2 ...
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1k views

Noise source in orcad pspice

I have a certain circuit and I want to see its ac performance when I send in certain noise as a signal. is there some option like noise source similar to sine etc signals in orcad.... I can make my ...
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2answers
12k views

How to find parts in OrCAD / Allegro

I probably spend most of my time in OrCAD / Allegro schematic capture just trying to find relatively simple parts. I'm assuming I'm missing something critical, as I've never had any formal training ...
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1answer
475 views

In PSpice, how can I fix the current with respect to resistor?

The textbook's problem is; The current of R4 and the voltage source are 1A and 2V respectively. If the current source is 1A: a) Find the mesh currents. b) Find the power dissipated in each resistor. ...
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1answer
1k views

Orca vcc_arrow vcc_bar and vcc_circle

I'm drawing a schematic diagram using Orcad. In order to put a power source, I'd like to use one of the vcc, vcc_arrw, vcc_bar and so on. But I have no idea when people use each of them. Could anyone ...
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1answer
1k views

OrCad issue: Logic circuit simulation…ambiguous output

After simulating the following logic circuit(in OrCad),the resulting output -'y' is unclear. It seems to me that everything is fine, yet the result is ambiguous. Can you, please, explain what is the ...
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1answer
979 views

Allegro PCB design: How to set referenced center during Footprint making

I have designed the Pads from Orcad Pad designer. Now I would like to make footprint of my IC but to design that i need a reference center point so that i can decide location of pins. Please tell if ...
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1answer
245 views

How to draw output resistance vs frequency in simulation?

I have a task to simulate this circuit and draw Rout vs frequency in the simulator. any idea how can I do this. I am using OrCad
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0answers
754 views

import “.lib” file orcad LM22670

I'm trying to import a step down voltage regulator from texas instrument into orcad capture. LM22670-ADJ Unencrypted PSpice Transient Model Pspice model available at texas instruments (was ...
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4answers
3k views

8x1 header in OrCAD

I'm trying to create a LCD Arduino Shield for the Arduino Uno using OrCAD. I want to add 8 pin through hole to solder headers into them. However, the 8 pin header in OrCAD library under Connector ...
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1answer
795 views

Noise figure in PSPICE

There is an example in OrCad PSPICE which calculates noise figure for an RF amplifier. I know the following formula for noise figure: $$\text{NF}_\text{dB}=10\log\frac{P_{no}}{G_aP_{ni}}$$ But in ...
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1answer
473 views

Problem of Convergence in simulating a model using Cadence Orcad 16.6 Pspice software?

I have a simple problem in simulating my circuit. First I will post all the details, Schismatic and netlist, then I will talk about the error and its options. I am using Cadence Orcad 16.6 Pspice and ...
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4answers
5k views

Use of controlled sources (VCCS, VCVS)

Voltage-controlled current sources (VCCS) can be used when we need to model a device or any part having voltage as input and current as output. Same is the case for voltage-controlled voltage sources (...
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1answer
255 views

Making sense of Cadence schematic source files

I'm looking into writing an application to visualize existing cadence (OrCad) projects when provided with the projects design files. I've had a look through the project directories and it looks like ...
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1answer
70 views

Value of Drain Current in BSIM3v3 in triode region

Here the value of drain current has been given as per the BSIM3v3 MOSFET model, but is there any reference where it has been shown how this value was calculated and what is the meaning of the symbols ...
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1answer
192 views

Orcad/PSpice - How to add V0, V1 for PSpice

I have my Circuit and PSpice solves it correctly. However, I want to measure the voltage across a specific place, V0. How do I add the marker V0 into my circuit and have PSpice solve for it?
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2answers
2k views

How can I create a rectangle drill in Orcad Layout Plus 10.3?

I use Orcad Layout Plus 10.3 for PCB design and I have a problem at this topic. For example, I have to use power jack footprint, I have created but the drill can't be rectangle. I added a screenshot ...
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1answer
144 views

Can anyone explain why I get these results in OrCAD?

I am new user of OrCAD , and I have a problem in understanding the voltage shown in the red circle. By logic, the voltage of this point should be: $$3.3 \mathrm V \times \frac{5 \Omega}{5 \Omega + 5 ...
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1answer
16k views

How to measure input/output impedance of amplifiers in a simulation?

What is the most effective way of measuring the input/output impedance of an amplifier in a simulation? When I know the impedance I want to measure is purely resistive, I usually set up an input ...
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1answer
58 views

What happen if I switch those labels when generating Artwork

What will happen if I edit the label "TOP" and write is as "BOTTOM" and vice versa with the other one? Will the manufactured board be ok, or will everything be mirrored? (When BOTTOM layer is mirrored ...
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1answer
2k views

Clearance between copper pour and board outline (in OrCAD 10.5)

I’m laying out a PCB with an intricate outline. First, I drew the outline (yellow in the picture below). Then I’ve added a copper pour at the top layer (blue in the picture below), but a clearance ...
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2answers
4k views

How to fix line to line spacing error in Allegro?

I have a line to line spacing error in Allegro. I don't know how to fix it. If I make the width of the trace smaller, it gives me a line to width error. And I also don't understand Why I get this ...
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1answer
195 views

Problem with circuit cam, can't view my top layer?

I have a circuit laid out in allegro and I'll be milling it out on a board router. I'm using Circuit Cam to produce the files needed for the board router. I have three layers, a top layer, a bottom ...
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1answer
2k views

Orcad DRC Error

I am new to Orcad Cadence 16.5 Schematics. i drawn a schematics and while running DRC, the following error repeatedly occurs for all Components. Please help me to eradicate the below errors: ...
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1answer
1k views

Allegro: How do I view the identifiers of all my components?

I'm using Allegro PCB editor to layout a board for a circuit that I'll be cutting out on a board router. In allegro PCB editor I just imported the netlist and I used quickplace to automatically place ...
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2answers
2k views

Pin numbering in OrCAD?

I'm getting another error in OrCAD when I try to create the netlist. When I try to create the netlist I get this warning: ERROR(ORCAP-36022): Pin number missing from Pin "DRIVE" of Package ...
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3answers
4k views

How to fix my warning in OrCAD?

I'm doing a schematic on OrCAD and when I did the Design Rules Check I got a warning that says: Checking Electrical Rules WARNING(ORCAP-1608): Net has no driving source N30274 I have a fairly ...
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2answers
1k views

Cadence pSpice weird simulation results

I made two simulations of real opamp and ideal opamp, why are results so different if other params are the same? Model I took from maxim site http://www.maximintegrated.com/en/design/tools/modeling-...
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3answers
7k views

How do I overlap wires in OrCAD capture without having the two wires have a node?

I'm doing a schematic for this in OrCAD capture CIS. In laying out my schematic I need to draw one wire going through another wire, but not necessarily intersecting with it via a node. When I drag a ...
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0answers
65 views

Over 100 pins ic packages in Eagle [duplicate]

I want to use Eagle or Kicad to design a board using Maxim chips MAXQ1103 and MAX32550 http://datasheets.maximintegrated.com/en/ds/MAXQ1103.pdf and http://datasheets.maximintegrated.com/en/ds/...
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1answer
1k views

DXF to MAX conversion in ORCAD 10.5

I'm trying to convert my board outline .dxf file to .max for Orcad 10.5. I applied exactly the same steps as described in OrCad Help; however, I obtain nothing but an empty page at the end process. If ...
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1answer
224 views

Do I need a ground plane?

I'm a noobie in pcb designing, so i created this one single sided board, do i need do add a ground plane if I have a ground trace? Cheers!
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0answers
3k views

A band pass filter simulation in PSpice

I designed a Constant K (I don't remember the constant K) LC band Pass filter with lower cut off frequency 1 KHz and upper 5 KHz. Using the value of K, I deduced the values of L and C and made the ...
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1answer
221 views

Using Models from PSPICE in ISPICE

How can I use a model from PSPICE into ISpice? I've been told that Spice models are roughly cross engine compatible. Intusoft ISpice has a really easy UI, but doesn't have as many models included as ...
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1answer
3k views

Orcad to Kicad schematic

I am looking into a reference design which was probably done using Orcad. I am using KiCAD for my design. In the reference design, there are schematic symbols like >> and <<. According to this ...
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1answer
222 views

CAD Eagle difference headers

I am trying to figure out difference between these two header types. One appears larger than the other with names differing by 'RA' at the end.
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3answers
9k views

Connecting copper pours in Cadence (OrCAD) PCB Designer

I'm trying to climb the Cadence learning curve, coming from an Eagle background. My board is four-layer, with a ground plane underneath the top layer. I have a surface mount IC that has an exposed ...
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1answer
20k views

How to use “Voltage controlled switch” in OrCAD?

In this OrCAD project, I tried to build really basic DC-DC Converter with use of "S" or "SBreak" parts in OrCAD's Analog Library. But, According to analysis (picture below), the blue DC line should ...
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2answers
5k views

How to add “Diac” in OrCAD?

I am trying to add Diac component into my OrCAD v16.5 Schematic Layout. But, I only find this code below as a netlist. Even Though, I can't include the netlist into OrCAD Capture perfectly. It didn't ...