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I changed the Subject line of this topic from "test.asc" to "Simulation runs very slowly: test.asc", because "test.asc" by itself was meaningless. It won't affect most of you, and it does not change

Chris, Also, FYI -? In many cases like this, one remedy (e.g., Alternate Solver) might not be the only one that helps.? There might be other settings that work even with the Normal Solver. Andy

Chris, FYI - Your simulation runs OK after changing to the Alternate Solver. Control Panel (Settings) > SPICE tab > Solver: change to Alternate. When done using the Alternate solver, you might want to

It is actually this way quite intentionally.? I had a discussion with Mike Engelhardt about it several years ago. Auto-generating symbols makes it as easy as possible for anyone to make a symbol

Yes, it can be fixed, but wouldn't it be better if it didn't happen? Should we ask for it to be changed to only show the model filename? -- This email has been checked for viruses by AVG antivirus

I am not sure but I figured the LM317 might be some sort of current limiter or regulator?? I'm guessing the "output" of those sections is the current through the diodes and current-sensing voltage

I have mostly needed to be away from my computer all day today, so I did not yet actually try simulating your circuit.? I only saw that the pieces were there. Andy

Yes, correct. You have not been banned, so you can still ask for help. But I give you another tip - in future use more explicit subjects than 'test'. Everyone and his cat has a file called 'test'. I

I’m sorry. I count one email with a definitely wrong subject: RE: [LTspice] Model of BF970 The others have different subject files which I have emailed, but they are each my own: test.asc test.asc

No, you didn't correct it. You continued the same thread, but with a different subject. By "start a new topic", I mean you start a new email thread by either: 1. Clicking "New Topic", if you're using

Yes, I noticed this and apologized for and corrected it in subsequent posts. Regards, Chris Sent: Sunday, March 30, 2025 1:24 PM To: [email protected] Subject: Re: [LTspice] test.asc Can you please

Can you please not hijack a thread. Start a new topic. What you did was reply to a message in the "Model of BF970 ?" thread, and simply change the subject. This is very irritating for anyone that uses

Andy, I apologize for the cockpit errors. Subject file has been uploaded. At the top of the test.asc file, I noted that I’m using an old LTspice : 17.1.14 - Chris Sent: Sunday, March 30, 2025 11:55

You uploaded the symbol for ADA4098-2 by accident.? It's not the same shape and has an extra pin. Yes, it is indeed there in newer versions of LTspice 24 (v24.1).? But not in older versions. Andy

Hi Andy, I note your concern about my use of opamp possibly causing conversion problems. But it’s opamp that inexplicably works! It’s the ADA4084-2 which has conversion problems. Regards, Chris

Hi Andy, I added the 1N4007 as a .model statement on the schematic. The LM317 and the ADA4084-2 are in the . ADA4084-2.zip along with the updated test.asc file. Strangely, in my LTspice, the ADA4084-2

Another stupid mistake on my part.? I wrote: I had the polarity wrong when I looked at V6.? Never mind! Andy

I wrote: Oops.? I meant " *convergence* problems".

I don't know if this matters - but it looks like you run the ADA4084 with inputs BEYOND the power supplies.? Its datasheet claims RRIO, but not beyond-RRIO.? Can it work that way? Its datasheet says

Can you please include the missing LTspice symbols and SPICE models?? We can't help you without them. LM317A_TRANS ADA4084-2 (The latter might be in newer LTspice versions, but the computer I am