Anyone here tried out Mike Engelhardt's new Qspice simulator yet?

 

No.
Unless someone determines it's significantly better than LTspice, I'm not motivated to learn a new simulator interface.

 

Me neither. It does seem a bit greedy on disk space. I wonder what libraries come with it by default?

 

I have been using it for a while. It has some structural and portability advantages, but it lacks generic non-Qorvo libraries. I have not tried any of the Qorvo parts in design or simulation yet. It is fairly easy to import ".model" cards from other simulators for BJT transistors, MOSFETS, and diodes. Importing subcircuits is slightly more difficult, but by no means outside the capability of an intermediate LTspice user.

The main portability advantage is that only one file is required to export a simulation. There is no requirement for users having identical libraries on their installations.

Here is an example of some transfer function blocks implemented as subcircuits.

Download the "....qsch.txt" file and open it in a text editor to see how the symbol graphic information and the .subckt is embeded in a single file

Mod Note: Could you allow "*.qsch" files to be uploaded without the need to add a .txt extension?

 

No.
Unless someone determines it's significantly better than LTspice, I'm not motivated to learn a new simulator interface.

Hardly surprising since you are still using LTspice IV. That's not a criticism, just an observation. If it still works for you then it is more than sufficient for your purposes.

 

you are still using LTspice IV.

True.
I have LTspice XVII but found no significant advantage over IV, and noticed a significant annoyance, so I don't usually use it.
It does not allow me to go between AC (Bode) analysis and Transient analysis, as I often due when checking both the phase and transient stability of an amplifier, without having to re-entering the simulation parameters each time.
I often find amplifiers that look stable in the Bode analysis, but have a large-signal instability in the transient analysis using a pulse signal.

Version IV remembers the parameters when I go between them.
Don't why they removed that handy feature, in version XVII but they did.

 

Qspice discussions can be found at:

https://forum.qorvo.com/c/qspice/9 --> sponsored and (presumably moderated) by Qorvo

https://groups.io/g/qspice --> unmoderated

Both are free to join.

 

but it lacks generic non-Qorvo libraries.

That would seem to be a large negative to me, considering the large number of part models I would need to import.

 

That would seem to be a large negative to me, considering the large number of part models I would need to import.

I do not expect this to be a long-term problem. Since a SPICE netlist is the primary element in a SPICE library, I expect that libraries and symbols compatible with Qspice will be coming out of the woodwork. in the proximate future.