Tube DIY Asylum

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Tube Cad Error??

Posted by gusser on June 11, 2021 at 19:08:12:
I posted a similar question a couple of weeks ago. I find Tube CAD buggy. I can run the exact same tube type and circuit two days in a row and get different results.
Spice and my test bench always agree within component tolerances.
Just this week I was working on a 6DJ8 SRPP and when I ran "Make It So" it kept pushing the B+ up to 660 volts. That is ridiculous as the 6DJ8 is a low plate voltage tube (in tube terms).
I also don't like how you can't lock parameters like the B+. If you give it an impossible parameter list it should just error out versus inserting ridiculous values.
But hey, for $10 I got more than my money's worth. I know it is not certified to run on Windows 7 but it also says no 64bit. I have a 32bit Win 7 install? Perhaps there are more bugs with Win7 than just 64bit versions? I may try dusting off and old Win XP machine I have.