RE: Learning about EMI from my DIY lightning detector

John Caldwell — Mon, 07 Oct 2013 17:00:54 GMT

Thanks for your comment John. Since my main goal for this article was to introduce the topic of op amp EMI rejection ratio (EMI-RR) to readers that may be unfamiliar with it, buying an off the shelf AM radio would not have helped achieve this. My second goal was to trigger my SLR camera on lightning activity in approaching thunderstorms I didn't need direction information because I could see the storm, I only needed timing information which this setup provided.

RE: Learning about EMI from my DIY lightning detector

John Walton1 — Mon, 07 Oct 2013 03:36:55 GMT

Perhaps you should purchase an a.m. radio at Radio Shack. Probably cost less than the diff amp and a proto board. They are useful as lightening directors at a few hundred miles after all. They will also reveal a wonky SMPS.

This is all about straightening pins isn't it? Lightening detection is useful when you can tell the direction it's coming from , ask any pilot.