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Questions tagged [pspice]

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0
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1answer
42 views

PSpice - simulation worst case - delay on AND gate?

I have a question to someone who is familiar with PSpice analysis. I have a simple circuit as below and everything works good with "typical" simulation - dstm1 gives positive impulses continously and ...
0
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0answers
18 views

transient output file option in pspise

I want to save my simulation result in capture every 100us and export them in text file. I went to simulation settings>Analysis>output file option and changed print values in output file every 100us (...
0
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1answer
32 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 ...
0
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1answer
23 views

Op Amp Tutorial Pspice missing value

I have this code below for a Amp Op Tutorial from this youtube video: https://www.youtube.com/watch?v=3qE3gL7XbT4. I get the error below for missing value but unsure what is the problem. I'm new to ...
0
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0answers
27 views

What is the Correct method to find the poles and zeros expressions?

What is the Correct method to find the poles and zeros expressions ? This is a replica circuit method used to calculate loop gain, please only consider the above part. I used pspice to find the bode ...
0
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1answer
44 views

How to break this multistage feedback amplifier to find loop gain Aβ ? (I'm using pspice)

by hand calculation I know that loop gain Aβ of this (current-current) circuit is 30, I tried to break this circuit and add Vtest to it , and setting input to zero but I didn't get a result that match ...
0
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4answers
49 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/...
0
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0answers
28 views

Simulate H Bridge in Pspice

I want to simulate an H-bridge in pspice but it doesn't work and Z3 and Z6 (High side and low side IGBTs) can not drive at the same time. Here is my schematic
0
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1answer
36 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 ...
1
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1answer
42 views

ERROR(ORPSIM-16492)

I am new to PSPICE as well as the community and i'm trying some circuits given by my professor for an assignment. I've completed most of them which helped me in understanding how the software works ...
0
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1answer
44 views

MOSFET Differential Amplifier voltages via PSpice and by hand

I want to do an analysis on a differential pair and there is a problem when the pair is in common-mode, at least that's what PSpice says. I find that \$V_{DS}\$ of both MOSFETs is 1.1V and PSpice ...
0
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1answer
26 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 ...
1
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1answer
56 views

PSPICE graphs work separately for subcircuits, wrong when combined?

I'm working on a pulse generation circuit that will be used to drive an ultrasonic transducer. The following circuit is giving an unexpected output. It might look complicated, but really it can be ...
0
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2answers
42 views

Is Cadence unable to simulate AC to DC converters using simple full bridge rectifier?

I've tried several different topologies, such as the full bridge rectifier and the following which I've successfully tested on other simulators. However, on Cadence I always end up getting static ...
1
vote
1answer
30 views

Why does AC/Sweep in Cadence always require a starting and stopping frequency?

It seems as if there is no way to simply test a circuit with an AC voltage source at a single frequency. How does someone test a circuit that plugs into the main voltage at 60Hz? Is it really ...
0
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1answer
23 views

Using PSPICE model of gate-driver from manufacturer

I have found a PSPICE model for a part I'm interested in. ISL55110 Datasheet: https://www.mouser.com/datasheet/2/698/isl55110-11-1302115.pdf Manufacturer PSPICE Model: https://www.renesas.com/cn/zh/...
1
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1answer
42 views

PSPICE simulation of capacitor voltage and current disagrees with math

I'm testing a simple enough circuit on PSPICE. The zener has a BV = 220V, so the capacitor has a voltage of 220V until the switch closes. Using the time equation for voltage of a capacitor: Vc(t) = ...
-1
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0answers
23 views

Voltage Regulatoe in OrCAD Capture

I’m trying to find a L78S05C voltage regulator in pspice to model in OrCAD capture. I cannot find it in a library but I have the data sheet. How do I create this component from scratch using the ...
0
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2answers
66 views

Why 7805c Voltage regulator drops the current if the current enters around 13mA to 7mA?

I know there should be voltage and current drop from the voltage regulator but my question is why current drops off ?
1
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1answer
59 views

Gate Capacitance in PSPice

So according to a book example (See Digital Integrated Circuits by J. M. Rabaey example 3.9) I'm trying to determine the Gate capacitance using the following schematics scetch: This comes directly ...
1
vote
1answer
109 views

Simulation result of bjt cascode amplifier

I use square wave as the input source to my BJT cascode amplifier. However, I got my output voltage as I used transient analysis in PSPICE to obtain the simulation result. Can someone tell me whether ...
0
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1answer
38 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,...
0
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2answers
109 views

Transient analysis of square wave using PSPICE

I need to do a transient analysis of my BJT cascode amplifier. I was asked to use VPULSE as the source. I need to set VPULSE for +-10mV, 50% duty cycle square wave at 128 kHz with rise time and fall ...
1
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0answers
63 views

Midband output voltage of cascode BJT amplifier in PSpice not right

I made a cascode BJT amplifier. \$V_{AC}\$ = 10e-3 V (ACMAG) From an AC sweep at the output, \$R_L\$, I need to get a voltage between 200 mV and 250 mV. However, I got 0 V. Why is this so? Do I ...
0
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1answer
73 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 ...
0
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2answers
80 views

Issue using pspice .lib in ltspice - Unknown Parameter

I received an unencrypted PSpice model of a TI Boost Converter (TPS43061) and I am trying to use it in LTSpice but I'm getting the following error and I'm not sure what I can do about it. Unknown ...
0
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0answers
54 views

Pspice overlap two wires without connecting them

I designed this feedback circuit in pspice. As you can see, there are some wires which overlap and should not be connected. As I found online, I tried to not place the overlapping wire over a ...
0
votes
1answer
57 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 ...
0
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1answer
82 views

Where to find Simulation models of Electrical Components?

i have been working on altium designer to make schematic, pcb and simulate the circuit. I have used some components like Varistor for which simulation model is not present in altium, i tried as much ...
0
votes
1answer
48 views

How can I simulate limits of active components?

I am using LTSpice to simulate an energy harvesting circuit, so I am very careful with small leakage currents and losses. This circuit is all discretes (Diodes and FETS) and passives. Is there any way ...
1
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1answer
29 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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0answers
50 views

Simulation not giving proper result in orcad

I tried to simulate TPS61021A boost converter in orcad but not working properly.As per datasheet http://ti.com/lit/ds/symlink/tps61021a.pdf it should give 3.3V output. Received this error is PSPICE A/...
0
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0answers
240 views

ERROR OrCap Can not initialize PSPICE UI

I have recently installed OrCAD Capture on my new laptop and I am receiving the following error when I try running the simulation: Can not initialize PSPICE UI Is this a known issue? How can I ...
0
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0answers
296 views

Error “Expecting keyword STIMULUS, saw 6” orcad

I'm getting the error says 'Expecting keyword STIMULUS, saw 6'! I don't know what does it mean? How can I solve this?
0
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1answer
100 views

Hartley oscillator with ua741 amp in pspice

I'm trying to simulate a hartley oscillator in Pspice using an ua741 amp. The results are not oscillations..I don't understand what's the problem..
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0answers
372 views

Error: “less than 2 connections at node orcad”

I am using orcad 16.6 for the first time. I have made a new library for the memristor, created a new part into it, and associated this new part to the PSpice simulation with one PSpice model. But when ...
0
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1answer
328 views

PSpice: How do I calculate the voltage drop across a resistor?

I'm searching for a tool that would display the voltage drop across a resistor in PSpice. Is there an element (like a voltmeter) that would help me able to do so?
1
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4answers
53 views

PSpice, collector emitter voltage is way too big

I'm trying a few exercises with transistor circuits that are later to follow with an amplifier circuits exercises, but although I'm following the instructions that my university has provided and ...
-7
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2answers
129 views

ERROR — Digital simulator not present [closed]

Can you tell me how can I fix this error?
0
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1answer
56 views

current measuring in the pspice

I am testing my circuit but my result seems to be false, I know something is wrong but I can not find the mistake, any help will be appreciated. with best regards.
0
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1answer
50 views

PSPICE simulation

I have a PSPICE file that contains approximately 200+ transistors. Naturally, simulating the whole circuit everytime I make a change takes a while. Is there anyway to run a simulation measuring only ...
0
votes
1answer
32 views

Bump Circuit in PSPICE

I am designing a bump circuit in PSPICE to determine if two voltages are equal. The schematic is shown in the figure below. The parameters are set in the subthreshold region, with a VDD of 2 volts. ...
0
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0answers
56 views

problem with pspice

I am not familiar with Pspice and I want to simulate RC circuit in that but my circuit does not work properly(like in the paper analysis)
0
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1answer
56 views

2nd order high pass filter PSPICE error

I'm working on designing a 2nd order sallen key high pass filter in PSPICE for a school project, but in subthreshold with resistors replaced with OTAs (transamp). Schematics shown in figures below. ...
0
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1answer
176 views

Unable to set the initial conditions for a capacitor or an inductor in PSpice?

I'm new to PSpice and working on setting up my initial conditions for a capacitor and an inductor in a series RLC circuit. However, whenever I try to set up my initial conditions, the IC box is greyed ...
0
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1answer
160 views

Group delay and phase delay of a filter

Maybe this question does not belong here but here, but since this webpage is for electric circuits in general and not for LTI systems that is why I post it here. I have to compute the group delay ...
0
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0answers
32 views

Calculate effiency of power harvesting circuits

Bellow figure shows my implementation of Parallel-Synchronized Switch Harvesting Interface (P-SSHI) circuit. I want to calculate this circuit's efficiency but I don't know how to calculate this kind ...
0
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0answers
58 views

PSpice convergence error

I am designing a switching voltage regulator and i have been running into convergence errors with opamp U10. I will be using a comparator when i create the circuit on a breadboard. I am wondering what ...
0
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0answers
139 views

Non-linear current-controlled resistor

I am trying to make a current-controlled resistor in OrCAD pspice, so that R = I^2, where I is the current going through the resistor. I have tried to implement it using a voltage-dependent current ...
0
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0answers
32 views

Pspice. Cannot get a bode plot from circuit. Help!

I've built a circuit on Pspice and I need to get a bode plot of the gain. My problem is that it wont give me any plot no matter what I do. The circuit works as you can see below I've created a new ...