I'm running a transient simulation (not OP) and I don't get the graphic, just a text window titled "Show your simulation report". I have checked nodes, SPICE models, labels. They seem good. What am I missing? https://easyeda.com/editor#id=86984acbe1cd412c8cb51c977a26c3cf https://easyeda.com/normal/LM339_Volume_Control-86984acbe1cd412c8cb51c977a26c3cf Well I found my answer I guess. The OpAm model on EasyEDA needs parameters. Make sure to include the parameters text box and make the text of type SPICE. I would delete my post but I can't find a button for that. .param rail=15 Vinpk=5 + Rin=10k + Rfb=1k + gain={-Rfb/Rin} + Voutpk= {Vinpk*ABS(gain)}