crobertsbmw 0 Posted August 27, 2011 Share Posted August 27, 2011 I have a circuit that I need to develop. I want to add a switch to a 220v ac source and switch it on or off with an MSP430. At first I was intending to use a solid state relay. However, I could not find an SSR that could handle 220vac, and have a coil voltage low enough to be triggered by a micro-controller, and keep the circuit inexpensive. I then looked at using a TRIAC as a switch and I bought one and was messing around with it and I couldn't get it to work the way I thought it should (it was always closed, even when I thought the thing should be open. I may have destroyed it while trying to solder leads to it). I then found out you have to "isolate the trigger." I have little idea of what that means. Does anyone know of any switches I could use for this application? Whether it be a specific SSR, or some other type of switch that I am not familiar with. If I were to use a TRIAC how do I isolate it and make it work properly? Thanks Chase Quote Link to post Share on other sites
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.