Patent ID: 7358684
Filing Date: 2008-04-15
Classification: H05B

Abstract:
1. A method to balance current flows in a light source operatively connected to an electrical circuit providing electrical power to the 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, and one or more second light-emitting devices connected to the second current path, the first current path operatively connected to a first power source through a first rectifying means for receiving a first current, the second current path operatively connected to a second power source through a second rectifying means for receiving a second current, wherein a ratio of the second current to the first current is R, and wherein the electrical circuit comprises: a first transformer operatively connected between the first power source and the first rectifying means, the first transformer having a second transformer operatively connected between the second power source and the second rectifying means, the second transformer having connecting the induction coil of the first transformer and the induction coil of the second transformer to form a current loop for the induction current in the first and second transformers; selecting the first and second coil turn ratios such that the ratio between the first coil turn ratio and the second coil turn ratio is substantially equal to R.