PSpice simulation vs temperature

Click For Summary

Discussion Overview

The discussion revolves around the use of PSpice simulation software to analyze the sensitivity of piezoresistance as a function of temperature. Participants explore the challenges of defining temperature parameters and conducting temperature sweeps in simulations, as well as the underlying concept of piezoresistance itself.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested, Homework-related

Main Points Raised

  • One participant is attempting to define the sensitivity of piezoresistance using a specific equation but encounters issues with the "temp" variable not changing during a temperature sweep.
  • Another participant suggests that the issue may be related to not defining the limits for the temperature sweep in the simulation file.
  • A third participant asks for clarification on what piezoresistance is, indicating a need for conceptual understanding.
  • One participant provides a brief explanation of piezoresistance and offers a method to model temperature changes using a thermistor in PSpice, including a sample subcircuit for a thermistor.

Areas of Agreement / Disagreement

Participants express varying levels of understanding regarding the use of temperature in PSpice simulations, with some seeking clarification on concepts while others provide technical suggestions. There is no consensus on the best approach to resolve the initial problem presented.

Contextual Notes

Participants mention potential limitations in defining temperature parameters and the need for specific configurations in the simulation software, but these aspects remain unresolved.

Who May Find This Useful

This discussion may be useful for individuals interested in PSpice simulations, particularly those working with temperature effects in electronic components like resistors and piezoresistors.

margyoala
Messages
1
Reaction score
0
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?
 
Last edited:
Engineering news on Phys.org
last time I used spice (some time ago) i was supposed to define the limits for the temperature sweep in some file. maybe that's what's missing...
 
execusme, I will not answer you but I have a qustion


...what is the piezoresistance
 
Can anyone tell me how to use pspice simulation software for temperature analysis for resistor.
 
Piezoresistance is resistance that changes with stress. It's commonly used in IC based pressure sensors.

For the formula, I don't know of a direct call to pull up "temp" during a sim, but you can build a thermistor or temperature sensor model and use it. The extended call for a resistor is:

Rxxx Node1 Node2 Value TC=?

To make yourself a thermistor,
.subckt THERMISTOR TH1 TH2
R1 TH1 TH2 1K TC=.02
.ends THERMISTOR

Best of luck,

- Mike
 
Last edited:

Similar threads

Replies
3
Views
2K
Replies
12
Views
3K
  • · Replies 18 ·
Replies
18
Views
36K
  • · Replies 5 ·
Replies
5
Views
16K
  • · Replies 7 ·
Replies
7
Views
9K
  • · Replies 7 ·
Replies
7
Views
7K
  • · Replies 6 ·
Replies
6
Views
2K
Replies
4
Views
14K
Replies
21
Views
6K
  • · Replies 5 ·
Replies
5
Views
1K