From: sunaecoNoChoppedPork@gmail.com   
      
   On Sun, 25 Jan 2026 13:07:32 -0800, john larkin    
   wrote:   
      
   >On Sun, 25 Jan 2026 19:44:41 +0000, JM   
   > wrote:   
   >   
   >>On Sun, 25 Jan 2026 11:12:56 -0800, john larkin    
   >>wrote:   
   >>   
   >>>On Sun, 25 Jan 2026 17:32:40 +0100, Jeroen Belleman   
   >>> wrote:   
   >>>   
   >>>>On 1/25/26 16:33, john larkin wrote:   
   >>>>> On Sun, 25 Jan 2026 13:04:14 +0100, Jeroen Belleman   
   >>>>>  wrote:   
   >>>>[...]   
   >>>>>> Jeroen Belleman   
   >>>>>>   
   >>>>>> ===============================   
   >>>>>> Version 4   
   >>>>>> SHEET 1 1476 680   
   >>>>>> WIRE 240 0 64 0   
   >>>>>> WIRE 864 0 240 0   
   >>>>>> WIRE 416 128 272 128   
   >>>>>> WIRE 576 128 512 128   
   >>>>>> WIRE 624 128 576 128   
   >>>>>> WIRE 736 128 704 128   
   >>>>>> WIRE 1040 128 896 128   
   >>>>>> WIRE 1168 128 1168 96   
   >>>>>> WIRE 1168 128 1136 128   
   >>>>>> WIRE 240 144 240 0   
   >>>>>> WIRE 272 144 272 128   
   >>>>>> WIRE 864 144 864 0   
   >>>>>> WIRE 896 144 896 128   
   >>>>>> WIRE 416 160 352 160   
   >>>>>> WIRE 576 160 512 160   
   >>>>>> WIRE 1040 160 976 160   
   >>>>>> WIRE 1232 160 1136 160   
   >>>>>> WIRE 1296 160 1232 160   
   >>>>>> WIRE 1456 160 1376 160   
   >>>>>> WIRE 64 176 64 0   
   >>>>>> WIRE 352 176 352 160   
   >>>>>> WIRE 576 176 576 160   
   >>>>>> WIRE 976 176 976 160   
   >>>>>> WIRE 272 256 272 240   
   >>>>>> WIRE 320 256 272 256   
   >>>>>> WIRE 896 256 896 240   
   >>>>>> WIRE 944 256 896 256   
   >>>>>> WIRE 64 288 64 256   
   >>>>>> WIRE 240 304 240 240   
   >>>>>> WIRE 864 304 864 240   
   >>>>>> WIRE 864 304 240 304   
   >>>>>> WIRE 240 336 240 304   
   >>>>>> WIRE 240 368 240 336   
   >>>>>> WIRE 192 384 96 384   
   >>>>>> WIRE 192 432 96 432   
   >>>>>> WIRE 96 448 96 432   
   >>>>>> WIRE 240 480 240 448   
   >>>>>> WIRE 96 544 96 528   
   >>>>>> FLAG 64 288 0   
   >>>>>> FLAG 240 480 0   
   >>>>>> FLAG 736 128 0   
   >>>>>> FLAG 96 384 0   
   >>>>>> FLAG 96 544 0   
   >>>>>> FLAG 576 128 outp   
   >>>>>> FLAG 240 336 D   
   >>>>>> FLAG 320 256 0   
   >>>>>> FLAG 944 256 0   
   >>>>>> FLAG 1456 160 0   
   >>>>>> FLAG 976 176 0   
   >>>>>> FLAG 1168 96 0   
   >>>>>> FLAG 1232 160 outm   
   >>>>>> FLAG 576 176 0   
   >>>>>> FLAG 352 176 0   
   >>>>>> SYMBOL voltage 64 160 R0   
   >>>>>> SYMATTR InstName V1   
   >>>>>> SYMATTR Value 100   
   >>>>>> SYMBOL tline 256 192 R90   
   >>>>>> SYMATTR InstName T1   
   >>>>>> SYMATTR Value Td=5n Z0=50   
   >>>>>> SYMBOL sw 240 352 R0   
   >>>>>> SYMATTR InstName S1   
   >>>>>> SYMATTR Value myswitch   
   >>>>>> SYMBOL res 608 144 R270   
   >>>>>> WINDOW 0 32 56 VTop 2   
   >>>>>> WINDOW 3 0 56 VBottom 2   
   >>>>>> SYMATTR InstName R1   
   >>>>>> SYMATTR Value 50   
   >>>>>> SYMBOL voltage 96 432 R0   
   >>>>>> WINDOW 123 0 0 Left 2   
   >>>>>> WINDOW 39 0 0 Left 2   
   >>>>>> SYMATTR InstName V2   
   >>>>>> SYMATTR Value PULSE(0 1 1n 1n 1n 15n)   
   >>>>>> SYMBOL tline 880 192 R90   
   >>>>>> SYMATTR InstName T2   
   >>>>>> SYMATTR Value Td=5n Z0=50   
   >>>>>> SYMBOL res 1392 144 R90   
   >>>>>> WINDOW 0 0 56 VBottom 2   
   >>>>>> WINDOW 3 32 56 VTop 2   
   >>>>>> SYMATTR InstName R2   
   >>>>>> SYMATTR Value 50   
   >>>>>> SYMBOL tline 1088 144 R0   
   >>>>>> SYMATTR InstName T3   
   >>>>>> SYMATTR Value Td=5n Z0=50   
   >>>>>> SYMBOL tline 464 144 R0   
   >>>>>> SYMATTR InstName T4   
   >>>>>> SYMATTR Value Td=5n Z0=50   
   >>>>>> TEXT 296 408 Left 2 !.model myswitch SW(Ron=10m roff=1G Vt=0.5)   
   >>>>>> TEXT 96 -16 Left 2 !.tran 50n   
   >>>>>   
   >>>>> It throws a "Multiple Instances of Flag" error   
   >>>>>   
   >>>>>   
   >>>>> John Larkin   
   >>>>> Highland Tech Glen Canyon Design Center   
   >>>>> Lunatic Fringe Electronics   
   >>>>   
   >>>>That's a nuisance. I downloaded it again from your answer and it works   
   >>>>fine here. I tried googling for that error message, but it typically   
   >>>>seems to occur when subcircuits are included, and I don't do that.   
   >>>>Eyeballing the .asc text, looking for anything duplicated, didn't help   
   >>>>either. I'm a bit at a loss here.   
   >>>>   
   >>>>Could you try removing  all the lines starting with 'FLAG'? The file   
   >>>>will still open in the schematic editor, but now all the GND connections   
   >>>>are gone, as are the node names. Insert GNDs again by hand. They are   
   >>>>all at the ends of bits of wire.   
   >>>>   
   >>>>Jeroen Belleman   
   >>>   
   >>>Weird. If I edit it down to one FLAG, it complains about multiple   
   >>>SYMATTRs. I think multiple symattrys are legal.   
   >>>   
   >>>Your other circuit worked fine.   
   >>>   
   >>>What is a FLAG anyhow? The help doesn't say.   
   >>>   
   >>>   
   >>>   
   >>>John Larkin   
   >>>Highland Tech Glen Canyon Design Center   
   >>>Lunatic Fringe Electronics   
   >>   
   >>It denotes a graphical (such as ground symbol)  or text (such as net   
   >>name) item.   
   >>   
   >>Go to tools/color preferences and you can give change the flag item   
   >>colours  to see where they are on the schematic.   
   >   
   >   
   >I fixed it. I copied the text from Jeroen's post, into a text editor,   
   >and saved it but didn't include the .asc extension. LT Spice then   
   >threw the weird errors.   
   >   
   >LT is great but kinda weird and definitely under-HELPed.   
   >   
      
   Wurth seems to be giving their book away for free.  It's probably the   
   closest to a user guide.   
      
   https://mega.nz/file/htcjUT6b#dkY5IZffmfKrU6g-456-l5BVwJgWctAe28oxcCcthiw   
      
      
      
   >Looks like  FLAG  x  y  0   
   >   
   >is a ground.   
   >   
   >   
   >John Larkin   
   >Highland Tech Glen Canyon Design Center   
   >Lunatic Fringe Electronics   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)