Original poster: "Corey May by way of Terry Fritz <twftesla-at-uswest-dot-net>" <cbmay-at-home-dot-com> Hello, I was wondering if this was right way, or one of the ways to find a good primary size. I am using wintesla and I matched may 10.5 turn primary's Required Capasitence with with the required capacitence of my transformer, 0.0532uf, with 0.0532 uf. This probably doesn't make any sence. Thanks Corey