Does anyone sell one of these premade? I've seen quite a few circuits out there to make your own taking various approaches, but is there something prebuilt that I could just order online or something?

hey guys.....typical badfish luck, i get the bare bones of my new htpc project assembled, and the crusty "at" style psu makes that poof noise, and gives up the ghost ...

I designed this relay circuit to function as a DPDT toggle which is controlled by a momentary switch. I strive to keep my circuits simple with little or no integration (555’s, transistors, etc). The ...