Patent ID: 7436279

Claim:
A high voltage transformer comprising: a closed core ( 10 ) having a first and a second leg ( 12 , 14 ), a first coil member ( 16 ) that is disposed on the first leg ( 12 ) of the core ( 10 ) and that has a first end, a second end and a middle section, a second coil member ( 18 ) that is disposed on the second leg ( 14 ) of the core ( 10 ) that has a first end, a second end and a middle section, wherein each coil member ( 16 ; 18 ) is wound with a first and a second primary winding (Prim 1 , Prim 2 and Prim 3 , Prim 4 ) and a first and a second secondary winding (Sec 1 , Sec 2 and Sec 3 , Sec 4 ), wherein the first primary winding (Prim 1 , Prim 3 ) is disposed at the first end and the second primary winding (Prim 2 , Prim 4 ) at the second end of each coil member ( 16 ; 18 ), and the first secondary winding (Sec 1 , Sec 3 ) of each coil member ( 16 ; 18 ) is wound in the direction of the first end starting from the middle of the coil member and the second secondary winding (Sec 2 , Sec 4 ) of each coil member ( 16 ; 18 ) is wound in the direction of its second end starting from the middle of the coil member, wherein the winding direction of the first secondary winding (Sec 1 , Sec 3 ) is the opposite of the winding direction of the second secondary winding (Sec 2 , Sec 4 ), and a first electric connection (HV 12 , HV 34 ) is disposed in the middle of each coil member ( 16 ; 18 ).