Patent ID: 8933636
Filing Date: 2015-01-13
Classification: H05B

Abstract:
1. An LED driving circuit comprising: a rectifier having a positive power supply output and a negative power supply output; a first circuit which is connected to said rectifier, and which includes a first LED array, a first current detection unit for detecting current flowing through said first LED array, and a first current control unit for controlling current flowing from said first LED array to said negative power supply output in accordance with said current detected by said first current detection unit; and a second circuit which is connected to said rectifier, and which includes a second LED array, a second current detection unit for detecting current flowing through said second LED array, and a second current control unit for controlling current flowing from said positive power supply output to said second LED array in accordance with said current detected by said second current detection unit, and wherein: a current path connecting said first LED array and said second LED array in parallel relative to said rectifier and a current path connecting said first LED array and said second LED array in series relative to said rectifier are formed in accordance with an output voltage of said rectifier.