As a young child of the 1960’s I was fascinated with batteries and electricity. To feed my curiosity I had an Allied Radio catalog that (much like Amazon today) I could order about anything I could afford and have it delivered to our door. I spent the next 10 years building small circuits to fit a wide array of purposes. (I almost always had a solar powered radio in some form.) When I finally went to Junior College I already had a basic understanding of how most things around the house worked.