Damping vs. Time Step 01 PUBLIC

Beware that, in CL, the damping in circuits including
inductors is very dependent on the Time Step but is
independent of Stop Time.

This is with a Stop Time of 10u and a Time Step 10n.

Beware that, in CL, the damping in circuits including inductors is very dependent on the Time Step but is independent of Stop Time.

This is with a Stop Time of 10u and a Time Step 10n.

The maximum amplitude of the second peak is 961.5mV.

Note how rapidly the oscillations are damped out.

In theory, they should carry on indefinitely at the same amplitude because the current source has infinite impedance, the L and C have zero series resistances and no other parasitic impedances to leak energy away from the pure LC circuit.

Note that the 1ps delay in the ustep expression for I1 is mandatory. The simulation will not run correctly unless this value is > 0.

Simulate > Time Domain > Run Time-Domain Simulation

See also:

https://www.circuitlab.com/circuit/4erqjv/damping-vs-time-step-02/

https://www.circuitlab.com/circuit/y97g97/damping-vs-time-step-03/