Abstract: A neon sign transformer for operating a neon tube from a mains frequency alternating current comprising: a filter for filtering electro-magnetic interference from said alternating current; a first rectifier for rectifying said filtered alternating current so as to produce a low level alternating current; electrical circuit driver for generating a high frequency low level alternating current; an electrical power circuitry for generating a high frequency high level alternating current then rectified to provide said high level direct current for energizing said neon tubes.

Abstract: In a method of producing electrode receptacle assemblies for resisting sudden heat increases comprising the steps of selecting carbonate resin plastic having a density of 1.2 mg/m.sup.3, melt flow rate of 9 to about 12 g/10 m at 300 degrees Centigrade and 1,200 g load, and a tensile stress at yield of 63 MPa, a tensile stress at break of 68 MPa, a deflection temperature under load at 1.

Abstract: In an electrical receptacle having a generally hollow cylindrical section for receiving a high tension wire at one end and a neon tube at another end, said neon tube adapted for electrical connection with said high tension wire interiorally of said hollow cylindrical section, said hollow cylindrical section comprised of carbonate resin plastic for resisting sudden heat increases within said hollow cylindrical section in the region of said electrical contact with said neon tube and said high tension wire wherein said carbonate resin plastic has a melt flow of 9 to about 12 g/10 m at 300 degrees Centigrade and 1,200 g load and tensile stress at yield of 63 MPa, a tensile stress at break of 68 MPa, a delfection temperature under load at 1.8 MPa of 133 degrees Centigrade and a dielectric strength of greater than 16 KV/mm.