alan smith wrote: > The tried and proven method using something like a MOC3011 and triac > works fine, but for reasons of board space and cost, I've been > contemplating using one of those triacs that are logic level driven. > I haven't looked into them much, just the fact I know they exist > (SGS..others?) from looking a year or so back on another project. I've been using ACS102 from ST, and they were a real pain. Maybe I was not using them correctly, but I had troubles in both 220V powered environment, and used with Optocouplers. critical, unadapt to (small) inductive loads such as electrovalve (despite advertising) ... I resolved to small standard triacs. -- Ciao, Dario -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist