Substituting Triacs In The Digital Lighting Controller

摘要

I am currently in the process of building the Digital Lighting Controller (SILICON CHIP, October to December 2010), together with some slave units. I have a question with regard to the Triacs. The article warns against substituting other Triacs for the BTA41s specified. I have a box of SCl5lDs that I would like to use. The only significant differences that I can see are that the SCl5lDs have a lower continuous and peak current rating and they do not have an isolated tab. The lack of an isolated tab does not seem to be a problem electrically, as the tab is internally connected to T2 (or A2) terminal. In this circuit these are all connected to the Active line anyway.