a/c DC question
I have been installing a solar repeater site for an EMS system and my helper is the assistant chief of said firm. He is an X-navy nuclear electrical technician. During the installation progress he informed me that he also taught new technicians. One of the questions he asked these new students was if they knew how to tell if the problem could be diagnosed by the magic smoke from the circuit board or wire, whether it was on the “a/c” or “DC” side. This was a new diagnostic tool that I had never heard of, and I have been in this industry for many years. I thought maybe I should pass this tip by those of you that are wiser than I. He climes that DC smoke rises in a straight line, while a/c smoke is wavy because of the cycles it runs on. Can any of you verify this as a viable diagnostic tool.