AC Two-Way Switch: Setting Up & Testing in PSPICE

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Discussion Overview

The discussion revolves around setting up and testing an AC two-way switch in PSPICE, specifically focusing on the configuration involving a capacitor and inductor in parallel. Participants explore how to implement the switch and monitor outputs effectively within the simulation environment.

Discussion Character

  • Technical explanation, Experimental/applied, Debate/contested

Main Points Raised

  • One participant describes a circuit setup with an AC input connected to a capacitor and inductor in parallel, seeking guidance on implementing a switch to alternate between their outputs.
  • Another participant suggests using specific PSPICE switch components (sw_tclose or sw_topen) from the eval library for the simulation.
  • A later reply proposes an alternative approach of monitoring both outputs simultaneously in PSPICE, noting the frequency-dependent behavior of the inductor and capacitor.
  • This participant also mentions the resonance effect that occurs when the reactances of the capacitor and inductor are equal, suggesting a different configuration to observe this phenomenon.

Areas of Agreement / Disagreement

Participants present multiple approaches and insights regarding the implementation of the switch and the behavior of the circuit components, indicating that there is no consensus on a single method or understanding of the resonance effect.

Contextual Notes

The discussion includes various assumptions about the behavior of capacitors and inductors at different frequencies, as well as the limitations of observing resonance effects in the proposed configurations.

nst.john
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Hello People!

So currently I have an AC input going into a capacitor and inductor in parallel, and I want the output from the capacitor and inductor to go into a switch that flips from outputting the capacitive load's output and the inductor's load output, a little diagram is shown below:
upload_2017-4-29_12-59-9.png

Instead of two resistors, both outputs would go into a switch with the switch's output connected to a load resistor. How could I go about making this switch and checking it in PSPICE? Thank you in advance!
 
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switch in pspice called sw_tclose or sw_topen (N.o_Or N.C switch), both can be found in eval library

edit: the emoji stands for normally open, I can fix it but I find that amusing
 
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Fantastic, thank you very much!
 
nst.john said:
Hello People!

So currently I have an AC input going into a capacitor and inductor in parallel, and I want the output from the capacitor and inductor to go into a switch that flips from outputting the capacitive load's output and the inductor's load output, a little diagram is shown below:
View attachment 197483
Instead of two resistors, both outputs would go into a switch with the switch's output connected to a load resistor. How could I go about making this switch and checking it in PSPICE? Thank you in advance!
You could just monitor two outputs at the same time with a Spice program.

You would see that the inductor increases its reactance with rising frequency, so you would get less output. And the capacitor has the opposite effect.

You could observe the changes in phase that occur if you change the frequency.

However, you would miss the resonance effect that occurs when the reactances of the capacitor and inductor are equal.

For this, you could connect both the inductor and capacitor together at one end of a resistor which is connected to ground at the other end.
 

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