Patent ID: 7196483
Filing Date: 2007-03-27
Classification: H05B

Abstract:
1. An electrical circuit for use with a light source, the light source having at least a first current path, a second current path, one or more first light-emitting devices connected to the first current path for receiving a first current from the electrical circuit, and one or more second light-emitting devices connected to the second current path for receiving a second current from the electrical circuit, wherein a ratio of the second current to the first current is R, said electrical circuit comprising: an inverter driver section to provide electrical power; a rectifying section having a first rectifier and a second rectifier; and a balanced transformer section disposed between the inverter driver section and the rectifying section, the balanced transformer section comprising: a first transformer operatively connected between the inverter driver section and the first rectifier, the first transformer having a second transformer operatively connected between the inverter driver section and the second rectifier, the second transformer having wherein the induction coil of the first transformer and the induction coil of the second transformer are connected to form a current loop for the induction current in the first and second transformers, and wherein a ratio between the first coil turn ratio and the second coil turn ratio is substantially equal to R.