After my Pappaw retired from the AF (at 45 with 26yrs) he worked for TVA for 20+ years in Knoxville and retired from them too...he didnt have a college degree but built, rebuilt, and repaired machines and devices of various kinds for them. Sometimes downtown and sometimes at the Dams and stuff. I was lucky enough to be really close to him and he took me to a lot of TVA sites and stuff growing up. He explained to me about electricity being in/out of phase and how it has to do with the waves lining up with eachother from top to trough etc...drawing pictures on a piece of paper at the kitchen table. Same way he taught me the 4 cycles in an ICE, how electrical and brake systems worked in cars, and pretty much everything else man/science related. He was everything to me, and still is. Anyway, thanks for reminding me of him today. Also for sharing some of your expertise in this area. You and my Pappaw (and me) would be like peas in a pod. He taught me how to solder, and build circuits with capacitors, resistors, switches etc too...from your previous posts I remember that you are very knowledgeable about this stuff too. He built all kinds of contraptions and machines, from simple to very complex. He was extremely kind and helpful to everyone, and had a great sense of humor. After he retired the 2nd time from TVA, he volunteered for the rest of his life with a charity called Remote Area Medical out of Knoxville. He gave his time for them up until he couldn't drive anymore. He is the best man I have ever known.