Tried to load your file, but got a dialog box that said
"Couldn't find symbols
LM339A
SCR_Teccor
Correct me if I'm wrong or off base, but isn't using an SCR to switch a DC load problematical because you can't turn it off? Unlike an AC circuit the current does not make periodic zero crossings. If I were you I would consider a PNP high-side Switch like say a VN340 or similar
I get the same when transferring the file to another PC. I then go find the files and load them into the relevent directories. Is there any way to embed the files in the .asc file?
I found the source of your original problem.
In the file Teccscr.lib, you need to either remove all the text lines at the top of the file (leave the "**********" above the first subcircuit), or you can put an asterisk in front of each line. In either case, save the file before re-running the sim.
You should do this even if you get rid of the SCR in your circuit, in the event that you want to use this file again.
No, you didn't miss anything. I already had it in my SUB folder. I had downloaded it from Teccor several years ago. it looks like the file has changed somewhat since Littelfuse acquired them. It appears that the first file listed **broken link removed** is basically the same thing, without the troublesome header.
BTW, "any" was a word that appeared several times in the header. Hence the error, "Multiple instances of 'Any'". I had a hell of a time finding it. I finally started gutting the circuit, re-simming until the error went away.
hi Andrew,
You can switch ON an SCR to control 'dc', BUT you cannot switch it OFF without removing the load connection to the SCR or shorting the SCR out.
Switching 'dc', no ZCD is required , so no MOC is required.