Patent ID: 8970118
Filing Date: 2015-03-03
Classification: H05B

Abstract:
1. An LED lighting tube compatible with an electronic ballast having first, second, third and fourth AC output terminals, with the LED lighting tube comprising: a first terminal having two electrode pins adapted to be connected to the first and second AC output terminals of the electronic ballast; a second terminal having two electrode pins adapted to be connected to the third and fourth AC output terminals of the electronic ballast; two snubber circuits respectively connected to the first and second terminals, with two input terminals of each snubber circuit respectively connected to the two electrode pins of a corresponding terminal; with each snubber circuit having at least one resistor connected in series between the two electrode pins of the corresponding terminal; a waveform conversion circuit having multiple rectifier diodes and having input terminals connected to output terminals of the two snubber circuits, wherein a recovery time of each rectifier diode is under 2.5 us; and at least one LED light string having two ends respectively connected to output terminals of the waveform conversion circuit, wherein each one of the at least one LED light string comprises multiple LED units connected in series.