1. Home
  2. Electronics Design
  3. weird LT Spice
  4. Page 2

weird LT Spice

I added a 1 volt supply that was grounded on the low end but not connected otherwise. That temporarily fixed the problem of the un-probeable nodes. But then adding another part broke it again. The power supply just shuffled the circuit a little and stirred up the random initial condition problem. LT Spice is funny that way.

I didn't have floating nodes unless they were inside the EPC fet model. I think that LT Spice doesn't like that model. The EPC library is all text, but it's too complex for me to decode.

--

John Larkin         Highland Technology, Inc 

lunatic fringe electronics
Reply to
John Larkin
Loading thread data ...

If the issue is performance of GaN models, you could always consult the LTspice group on Yahoo.

formatting link

I don't recall anyone else having issues with them, but if you've loaded the EPC library somewhere in the past, it may be first reference for the model, even if it or a newer library or model is located in your working library.

The only way to enforce use of local libraries is to use .inc.\xxx.lib rather than the basic .inc xxx.lib

But that's only one possibility.

I ran into this issue with long forgotten non-standard libraries that were decades+ old, resident in a new XVI 'over-install'.

RL

Reply to
legg

What's interesting is that I don't have any .inc statement. Spice seems to use the epc.lib file in the local folder just because it's there, or referenced through some path not obvious to me. If I rename it to .liz, it won't run.

--

John Larkin         Highland Technology, Inc 

lunatic fringe electronics
Reply to
John Larkin

That's a good indication that there's only one library, the local one, involved.

RL

Reply to
legg

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.