On Thu, Nov 7, 2024 at 08:32 PM, Andy I wrote:

would have preferred having an .OPTION to select between Trap and Modified Trap.

Andy - Good point, there should be a .option to select modified trap.  We will add support for ".options method modtrap" in the next revision.

 

The anti-trap ringing has caused a lot of confusion, as it is simply a post-processing that hides it from the user.  For one, this can cause errors in circuits without trap ringing (see "Integration Methods" in the help if you're curious) and it can hide problems from the user, for example if there is trap ringing on the gate of a MOSFET causing it to switch on and off -- the user can't see the oscillation on the gate but they can see the troublesome downstream effects.  Hence, modified trap remains available but is no longer the default.

 

-Ben