[sdiy] Qspice, anyone tried it?

[brianw]

What exactly do you mean by original?

SPICE was initially released in 1973, by Laurence Nagel. The catch is that there is no graphical user interface. Everything from the circuit design to the models are done textually. It's open source, though, so it has lasted until today in many forms.

LTspice was originally released in 1999, my Mike Engelhardt, so it's 26 years younger than the original SPICE. If you ever wondered why it's so clunky, it's because it's a GUI on top of SPICE. The models are still textual, and somewhat difficult to manage. LTspice comes from Linear Technology, Inc. who were purchased by Analog Devices in 2017.

QSPICE is a little over a year old and is hosted by the Qorvo company.

There have been other GUI versions of software based on SPICE, but I forget the names. There was at least one other before LTspice. All of them seem clunky to me, compared to normal schematic capture software.

Brian


On Dec 28, 2024, at 9:39 AM, Steve via Synth-diy <synth-diy at synth-diy.org> wrote:
> Hey list,
> 
> the guy who originally made LTspice, IIRC, some time ago started a supposedly improved, in several regards, simulator named Qspice. Working for a different company, I heard rumors stock models are hence not by LT but the other vendor... perhaps not super important to everyone.
> Supposedly, you can code simulated elaborate functionality in C++ and Verilog.
> 
> Here's something about what's different, and an article geared towards LTspice users.
> 
> If anyone on here is familiar with both to feel like commenting anything the articles don't mentionm, please do.
> 
>  
> https://hackaday.com/2023/08/25/qspice-picks-up-where-ltspice-left-us/
>  
> 
> Introduction to QSPICE for LTspice Users, Part 1
> https://www.allaboutcircuits.com/technical-articles/introduction-to-qspice-for-ltspice-users-part-1