Designed with split winding constructions and bifilar connections to reduce over all capacitance of the Winding. The use of high insulating materials and special shielding techniques results in attenuating common mode and minimizing transverse mode noise. The core and its magnetic properties are properly selected to exhibit sufficient leakage inductance to provide greatest possible attenuation of normal mode power line noise, consistent with the transfer of fundamental power frequency. But all higher frequencies are blocked. The use of Faraday's Unique Box shieiding and special techniques totally block the transfer of electric noise even by static charge, by way of proximity or R.F. Noises. Due to the better regulation, it does not generate common mode impedance coupling effect.