Patent ID: 8519814
Filing Date: 2013-08-27
Classification: H01F

Abstract:
1. A transformer, comprising: a primary winding coupled to a first port; a secondary winding coupled to a second port, the secondary winding comprising a first segment, a second segment, a third segment, a fourth segment, and a secondary winding switch, wherein: the first segment comprises an S the second segment comprises an S the third segment comprises an S the fourth segment comprises an S wherein the secondary winding switch is: turned on when S turned off when S a tertiary winding coupled to a third port, the tertiary winding comprising four tertiary segments and a tertiary winding switch wherein the tertiary winding switch is disposed between the four tertiary segments; wherein a current is induced in the secondary winding and minimal current is induced in the tertiary winding when the secondary winding switch is turned on and the tertiary winding switch is turned off.