Original poster: "pjj by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jjenkins-at-satx.rr-dot-com> I have a question, what whould happen is you havd 2 tanks on one secondary, and maybe phase them 180 deg, appart some way? to an uneducated fool like my self sounds interesting lets let you EE's educate me, lol. Just an intersting thought. Paul "Do I need to stand Back?"