Note that the VAS current source should slave from the diff-amp (LTP) current source and not the other way around. Otherwise the Q5 base resistor does not fix the problem.
I have the models if I decide to make the effort. But when I post simulation to DIYA, I put the non-standard models on the simulation (schematic) so that all you need is the asc file.
Unable to find definition of model "ledgreen"
Unable to find definition of model "bzx84c12v"
Unable to find definition of model "mr760"
And the diodes?
Some people create a temporary include file and post it as well as the asc.
Originally I also appended the LTC bjt etc files. There can be minor issue with multiple versions of certain parts when you use an include. And I am struggling with 4+ folders where files have landed and I need to clean up my system. LTC needs a %path% system.
You are absolutely right. Over the years I "upgraded" my standard libs for ease of use - this is the result🙁
A zipped file may not work due to size restrictions here, so I will see what I can do to deliver.
Was the list of missing parts complete?
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meanwhile I installed a "fresh" LTSpice IV and modified my file to work with this setup without any include or lib statements.
Doing so I found some good reasons to hate LTSpice temporarily from the bottom of my heart.
Doing so I found some good reasons to hate LTSpice temporarily from the bottom of my heart.
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This only applies to the original circuit from Mark Tillotson (post#1) .
https://images.weserv.nl/?w=800&t=fit&url=sphinx.mythic-beasts.com/~markt/mosfet_schematic.png
Specifically, Q2 should be connected to R4 and not R3.
BTW, your last asc file works fine.
After all the hassle with LTSpice it is nice to read that. I am curious about your comments concerning the simulation circuitry.
This version of Mark's circuit illustrates my points. It also includes models and because my PC is not super fast, I have sped up the simulation by allowing larger time steps. And the 3 ffts all follow the input frequency parameter.
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Simulations are promising so far. Meanwhile I finished a KiCAD layout on 100x100mm doubled sided pcb and will order today, possibly from All-PCB. The moment of truth comes nearer!🙂
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Glad everyone's having fun with this, be interesting to see any real examples people build perform well!
Well, cooling two TO-3 devices at opposite sides of a PCB might get somewhat challenging 😉!
Best regards!
Best regards!
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