Now that I see that Tom and my circuit diagrams agree, I propose we call it "Circuit Endpoint Grounding" when discussing the circuit and "Transformer Midpoint Grounding" when discussing the coil. Kenny Kenny Greenberg Neon Artist, Scenic Specialist, Columnist - Internet World c/o KRYPTON NEON 34-43 Vernon Blvd Long Island City, NY 11106 Ph: 718-728-4450 Fx: 718-728-7206 Email: kenny@neonshop.com http://www.neonshop.com http://www.licweb.com