So, I renamed opamp-1.sym and copied in the one you sent in your email.
[djlogan@server chapter5]$ ngspice -b problem_5_48.cir -o problem_5_48.out Note: trying dynamic Gmin stepping Trying gmin = 5.6234E-03 Note: One successful Gmin step Trying gmin = 3.1623E-03 Note: One successful Gmin step Trying gmin = 1.3335E-03 Note: One successful Gmin step Trying gmin = 3.6517E-04 Note: One successful Gmin step Trying gmin = 5.2330E-05 Note: One successful Gmin step Trying gmin = 5.2330E-06 Note: One successful Gmin step Trying gmin = 5.2330E-07 Note: One successful Gmin step Trying gmin = 4.5316E-07 Note: One successful Gmin step Trying gmin = 3.9242E-07 Note: One successful Gmin step Trying gmin = 3.1623E-07 Note: One successful Gmin step Trying gmin = 2.5483E-07 Note: One successful Gmin step Trying gmin = 2.2876E-07 Note: One successful Gmin step Trying gmin = 1.9456E-07 Note: One successful Gmin step Trying gmin = 1.6548E-07 Note: One successful Gmin step Trying gmin = 1.2980E-07 Note: One successful Gmin step Trying gmin = 1.2216E-07 Note: One successful Gmin step Trying gmin = 1.1941E-07 Note: One successful Gmin step Trying gmin = 1.1672E-07 Note: One successful Gmin step Trying gmin = 1.1280E-07 Note: One successful Gmin step Trying gmin = 1.0717E-07 Note: One successful Gmin step Trying gmin = 1.0580E-07 Note: One successful Gmin step Trying gmin = 1.0446E-07 Note: One successful Gmin step Trying gmin = 1.0379E-07 Note: One successful Gmin step Trying gmin = 1.0346E-07 Note: One successful Gmin step Trying gmin = 1.0313E-07 Note: One successful Gmin step Trying gmin = 1.0304E-07 Note: One successful Gmin step Trying gmin = 1.0304E-07 Warning: last gmin step failed Warning: dynamic gmin stepping failed Note: starting source stepping Supplies reduced to 0.0000% Note: One successful source step Supplies reduced to 0.1000% Note: One successful source step Supplies reduced to 0.2000% Note: One successful source step Supplies reduced to 0.3500% Note: One successful source step Supplies reduced to 0.5750% Note: One successful source step Supplies reduced to 0.9125% Note: One successful source step Supplies reduced to 1.4188% Note: One successful source step Supplies reduced to 2.1781% Note: One successful source step Supplies reduced to 3.3172% Note: One successful source step Supplies reduced to 4.4563% Note: One successful source step Supplies reduced to 5.5953% Note: One successful source step Supplies reduced to 5.5953% Note: One successful source step Supplies reduced to 5.8516% Note: One successful source step Supplies reduced to 6.1079% Note: One successful source step Supplies reduced to 6.4923% Note: One successful source step Supplies reduced to 7.0690% Note: One successful source step Supplies reduced to 7.0690% Note: One successful source step Supplies reduced to 7.1555% Note: One successful source step Supplies reduced to 7.2420% Note: One successful source step Supplies reduced to 7.3285% Note: One successful source step Supplies reduced to 7.3285% Warning: source stepping failed doAnalyses: Too many iterations without convergence
run simulation(s) aborted
Stuart Brorson wrote:
OK, maybe now you'll give me a little credit. I apologize for not having the time to fiddle with this until I can figure out how to get it work, but I have a LOT of work to do already.
Credit where credit's due! Good work on trying! Keep up the good work!
Missing Attributes (refdes and pin number)
Missing Attributes (refdes and pin number)
Missing Attributes (refdes and pin number)
Missing Attributes (refdes and pin number)
[. . . snip! . . .]
Any ideas? I didn't recopy your opamp-1.sym because one already existed. Is the one that already exists defective?
It looks to me like your symbol is defective. Try one of these:
1. Look at the pin attributes on the symbol itself. Verify that all pins have a pinnumber attribute. 2. Run "gsymcheck" on the symbol you want to use. It will tell you if your symbol has a problem. 3. Use the opamp symbol I posted last time. It has all pin attrbutes already set up for use in op amp simulations. 4. Post your schematic and op amp symbol here for us to look at & check.
Also, did you set the "refdes" attribute in your opamp?
Stuart