Laplace blocks and missing unrelated signal plots.

Description: Unrelated signals may unexpectedly fail to plot (without warning messages) after a number of successful simulations, when a Laplace block is in use, despite working initially.

Adding a small constant has been observed to restore missing signal plots. Review the public link for greater detail on the minimal side effects created.

Public circuit link: https://www.circuitlab.com/circuit/3v3c45/rc-laplace-debug1-plotting-failures/

Instructions: 1) Open the public circuit, and run the time domain simulation. Note in graph 2 the signal plots are absent.

2) Revise the LB6 TF: {1 / (s + 1f) } and run the time domain simulation. Note in graph 2 the signal plots are now present.

Browser Platform: Chrome Version 31.0.1650.63, OSX 10.9.1

Screenshot: (none) Run a time domain simulation to observe the missing signal plots in graph 2.

by integerlaw
December 24, 2013

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