Patent ID: 7319297

Claim:
A balanced current lamp module driven by a power source, the lamp module comprising: a first balanced current unit comprising a first transformer; a first lamp and a second lamp, wherein the first transformer has a first coil having two ends electrically connected with the power source and a second coil having two ends respectively electrically connected with the first lamp and the second lamp; a second balanced current unit comprising a second transformer, a third lamp and a fourth lamp, wherein the second transformer has a third coil having two ends electrically connected with the power source, and a fourth coil having two ends respectively electrically connected with the third lamp and the fourth lamp; and a balanced transformer comprising a fifth coil and a sixth coil, wherein the fifth coil having one end electrically connected with the first lamp and the second lamp, and the sixth coil having one end electrically connected with the third lamp and the fourth lamp.