1. Skip to navigation
  2. Skip to content
  3. Skip to sidebar

LTspice: Computing the Average or RMS Value of a Trace

Gabino Alonso - Strategic Marketing Engineer Nov 6th 2013

The LTspice waveform viewer can integrate a trace to produce the average or RMS value over a given region.

To integrate a trace in the waveform viewer:

  1. Zoom in to the region of interest.
  2. Hold down the control key and click the label of the trace you want to integrate.

Based on the physical units of the data trace, LTspice IV displays a meaningful average for that type of data. For example, if the units are a voltage or current, LTspice IV displays the average and the RMS values. Otherwise, LTspice IV displays the average and integral of the data displayed in the waveform viewer. If you are plotting noise densities from a .noise simulation, LTspice IV shows total RMS noise.

LTspice IV: Computing the Average or RMS Value of a Trace

 

 


Software

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice