Bi-Directional Thyristor vs Triac

Spice simulation demonstrating that an anti-parallel pair of thyristors be functionally replaced by a Triac. 

Note however that the specifications of the triac chosen to replace the thyristors in the original circuit must be carefully studied to ensure that it is a suitable replacement for the supply and load conditions and can be driven by the original gate drive circuit.

The simulation uses spice models developed for EasyEDA by signality.co.uk

To run each simulation, press the F8 key. 

For more information about simulation in EasyEDA Std, please see the Simulation Tutorial (3) in (2) in: 

https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a