Patent ID: 6822546
Filing Date: 2004-11-23
Classification: H01F,H04L

Abstract:
A transformer comprising:a core comprising two marginal portions each having two ends, a central portion having two ends and located in spaced relation between the two marginal portions and connecting portions interconnecting both ends of the central portion with corresponding ends of the two marginal portions; at least one first primary winding and at least one first secondary winding wound around one of the two marginal portions; and at least one second primary winding and at least one second secondary winding wound round the other of the two marginal portions; wherein the central portion is adapted to provide a shunt for components of the magnetic field produced by electric current the winding; and wherein the at least one first primary winding comprises two first primary windings, the at least one first secondary winding comprises one first secondary winding, the at least one second primary winding comprises two second primary windings and the at least one second secondary winding comprises one second secondary winding.