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Hi Andy, Thanks for pointing that out. YES, I missed the missing dot (.) in front of the "options plotwinsize=0" I will blame the oversight on the highly acute and superior vision, which seems to

John, Here is a follow-up to yesterday's mention of the spurious stuff at 3.33 Hz (and odd harmonics) that was about 80 dB below the fundamental. It's an artifact.? It's not in the signal. I am not

Mike, maybe you missed it, but I answered John already.? John wrote "options" instead of ".options".? That turned it from a dot-command to a lossy transmission line, and gave us the error. Andy

Hi John, I do not know why this works. I changed the commands on the schematic to include more precision. .options numdgt=10 .options measdgt=10 .options plotwinsize=0 is listed on it's own seperate

John, The command-line you tried to add was "options plotwinsize=0".? That.s OK, except that it is missing the leading period.? So, LTspice sees it as an attempt to add an O-device, which is a Lossy

Thanks, Andy. I have uploaded '3-cycle sine symmetry.asc'. To see the waveforms, simulate for 120 ms. You may tell me that I don't need to specify the PWL for as much as 120 ms, but that raises an

I am pretty sure that the "Missing node(s)" warning is not related to the ".options plotwinsize=0".? I can't see any way that one would cause the other. Any chance of uploading the schematic? It's

I am now looking at another control method that changes the amplitudes of successive half-cycles of the sine wav, in the sequence 1,0.5,0.5,1, 0.5,0.5,1,0.5,0.5,1,0.5,0.5. I made a PWL voltage source

Yes, this is a "known" problem, and it's been known for a rather long time.? It was before Tony's message in 2022 ( /g/LTspice/message/138735 ).? I don't recall exactly when it was

Can you share the "good" jfet models or point me to where I can find them? Thanks

I have written about this several times in this group, starting with #138735 </g/LTspice/message/138735>. I have also complained to ADI about it a number of times. All to no avail. It

My files are tools and one should take care of them.

I always do a backup of my stuff before updating, but I haven't updated in a long time, because wouldn't of they done it right the first time?

I haven't updated for a long time (since March 15). Now I updated and found that Linear Systems' JFET models have been changed. From weakly wrong noise models they replaced them with ultra-noisy

It seams if I go with a little higher collector current the ZTX458 works just fine.

Thank you for your information!

Thanks for the help guys. I guess there is no through hole replacement of the BPS19 which is SMD.

/g/Test-Equipment-Design-Construction/ You're right; this discussion is off-topic for LTspice. Have you considered /g/Test-Equipment-Design-Construction/ They have

Oops, sorry. Now I can't find the BPS19 either. I expect it's shy and you have frightened it away. I'm sure I did find it. BPS19: f_t 200 MHz Vce 20 V BFS19 f_t 260 MHz? Vce 30 V.

John wrote, " That's odd. I found several. Try: https://assets.nexperia.com/documents/data-sheet/BFS19.pdf ". No, that's the BFS19.? Richard asked about the BPS19. My take on it is that BPS19 is