Patent ID: 7443112
Filing Date: 2008-10-28
Classification: H05B

Abstract:
1. A circuit block for use in a driving circuit providing currents to a light source, the circuit block having a block input for receiving an input current, a first block output and a separate second block output for separately providing current to the light source, said circuit block comprising: a transformer having a first coil and a second coil magnetically coupled to each other, each of the first and second coils having an input end and an output end; a first capacitor connected between the input end and the output end of the first coil, the output end of the first coil forming the first block output; and a second capacitor connected between the input end and the output end of the second coil, the output end of the second coil forming the second block output, wherein the input end of the first coil and the input end of the second coil are coupled to each other to form the block input for receiving the input current so as to provide a first output current to the light source through the first block output and a second output current to the light source through the second block output.