Question for LTSpice Users

LTspice schematics are simple ASCII text files. If you can somehow export your old stuff in some understood, preferably text, format, it wouldn't be monstrous to write a Basic or Pearl program to do the conversion.

John

MicroSim Schematics is text-based as well. However, MicroSim Schematics is one of the best tools ever written... I want to continue using it.

...Jim Thompson

"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...

You can copy and paste a spice netlist file as a spice statement in the LTspice editor window and things seem to run........ So use MicroSim to generate a .net file and carry on.

It's not elegant but....

.include filename.net doesn't seem to work but there may be something similar that does.

Watch out for the license agreement!

You may as well e-mail Mike for a better answer, unless you are not mates anymore.

DNA

Which license agreement would that be?

I would, but I've misplaced his address :-9

...Jim Thompson

Oooops! I DO HAVE a request for a switcher design here on my desk ;-)

...Jim Thompson

"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...

Well..... help|about gives you an e-mail address for comments and bug reports. Each time I've used it Mike was the person who replied.

License...... help|help topics|License Agreement/Disclaimer.....

"This program is specifically not licensed for use by semiconductor manufacturers in the promotion, demonstration or sale of their products. Specific permission must be obtained from Linear Technology for the use of SwitcherCAD III for these applications."

OK it does not sound like it specifically prevents you from using the software to do what you do but it might be interpreted that way. I'm sure Linear Technology would take a dim view of things if you started using the software to design stuff that encroaches on their market.....

Play the 'White Man' and ask before you get stomped on...

DNA

LTspice will read the Schematics net list output. I was doing that back a few years ago on "that" project. PSpice does have a nicer graphing utility, so it would be spiffy if you could convert the LTspice output file to something PSpice's graphing utility could swallow. Although, I really like how LTspice shows graphical results as it is running the simulation.

"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...

Ooooooh me-gosh. Just call me jealous.

DNA

...Jim Thompson

-- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | |

Netlisting is more than half the battle. Why not just feed the netlist to any number of other spice simulators out there. Ngspice for instance.

"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...

Size of a sugar cube or smaller?

I had a professor tell me something pushing a decade again that state of the art was supposedly ~100 watts/cu. inch... Of course this isn't really that meaningful, since converting some flavors of power is a lot easier than others...

I just told them, "No más",... it's official ;-)

...Jim Thompson

In sci.electronics.cad Jim Thompson wrote: :>Has anyone used anything other than the provided schematic entry for :>LTSpice?

Yes, LTSpice accepts and runs any (syntactically correct) SPICE netlist which you can generate. In the past I have used parts of the gEDA Suite to generate SPICE netlists for LTSpice. My usual path is gschem (schematic capture) -> gnetlist -g spice-sdb (netlist generation) -> LTSpice (import & run SPICE netlist). I keep three windows open, one for running each tool. This flow works quite handily for me.

: I just told them, "No m?s",... it's official ;-)

Geronimoooooooo!

Stuart