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Created March 01, 2012
Last modified March 01, 2012
Tags initial-conditions  


A time-controlled switch can be used to force a capacitor to start discharged.


This circuit is in response to this forum post.

Run the time-domain simulation and you'll see that when SW1.T = 0, the switch shorts out the capacitor up to and including the instant t=0, and then becomes open so that the capacitor can begin charging.

Using the parameter sweep functionality of the solver, I've also asked it to plot the same voltages and currents, but using SW1.T=10m, so that the switch stays closed until 10 milliseconds into the simulation. This helps visualize what's going on for the time period t<=0 in the original (SW1.T=0) simulation.


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