How To: Use a Triac in LTspice
LTspice is a great and free circuit simulator that allows you to do a lot of things. However, simulating a TRIAC or DIAC circuit can be a challenge as these parts do not work straight out of the box. This video shows you how to get the job done. It also gives some background information on TRIACs and how to experiment with them in LTspice.