I have solved the problem why the circuit was not working in the Tina simulation. The triac shown in the circuit had a gate current of 50 ma. The .1uf capacitor could not provide that current. I have substituted a 2N6349A Triac which has a gate current of only 6ma. Now the circuit works just fine.
Tina has many triac and diac models. Ltspice has no such models. I couldn't even import any 3rd party triac models into it. Anybody looking for triac simulations switch to Texas Instruments Tina.
Tina has many triac and diac models. Ltspice has no such models. I couldn't even import any 3rd party triac models into it. Anybody looking for triac simulations switch to Texas Instruments Tina.