The trapezoidal method should be used in these cases because the other methods (Backward Euler or Gear2) introduce some artificial damping. Examples of slightly damped oscillations: RLC circuits, free acceleration of induction motor. Note that there are many oscillatory problems in which the oscillations are "forced" and are not affected by damping.
For example, a MOS ring oscillator, a Wien bridge oscillator, a 555 timer oscillator, a Schmitt trigger oscillator, etc. In these circuits, the "energy" of the oscillations is provided by a DC voltage source, and the results would not depend significantly on the method used for transient simulation. €¢ How does one select the method parameters? A detailed description of the various method parameters is given in the manual.
For a quick start, it is best to find a "similar" example (in terms of elements and time scales), and copy/paste the solve blocks from there. It is likely that the parameters used there would work well for the new ... more.
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