Orcad / Pspice / ABM simulation of mathemathical equation

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SUMMARY

Simulating mathematical equations in OrCad PSpice requires specific techniques due to its focus on circuit modeling rather than general-purpose math solving. Users must utilize behavioral models available in PSpice or adapt their equations into standard lumped models. Effective methods include employing polynomial resistors and dependent sources to represent the desired time-dependent current output. These strategies enable the design of electrical circuits that closely mimic mathematical waveforms.

PREREQUISITES
  • Understanding of OrCad PSpice software
  • Familiarity with behavioral modeling in SPICE
  • Knowledge of lumped circuit models
  • Experience with polynomial resistors and dependent sources
NEXT STEPS
  • Research how to implement behavioral models in OrCad PSpice
  • Learn techniques for converting mathematical equations into lumped circuit models
  • Explore the use of polynomial resistors in circuit design
  • Study the application of dependent sources in PSpice simulations
USEFUL FOR

Electrical engineers, circuit designers, and students looking to simulate mathematical equations in OrCad PSpice for circuit design and analysis.

olaftel
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Hallo, I Need to know how is possible to simulate in OrCad Pspice this mathemathical equation. This will be my reference waveform and later I will design my own electrical circuit to be as Close as is possible mathemathical equation. I have Problem how to design time dependent current Output. Use some RC part and Integrator or do you have any idea please? Thanks a lot.
 

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SPICE is not a general purpose math solver - it's specifically tailored to circuits in their most common "Lumped Model" forms.

So do add non-standard or arbitrary math into a circuit element you have to play some games:

1. Use a SPICE that allows behavioral models
2. Find a way to shoe-horn the equation into a standard lumped model (e.g. you can do mechanical lumped models as lumped electrical models with the proper conversion factors).
3. Implement the equation using polynomial resistors and dependent sources
 

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