| 摘要 |
<p>The invention relates to a LED light. The led light of the invention comprises a set of light-emitting diodes and a driver circuit, the driver circuit comprising a switching mode power converter with power factor correction, wherein the switching mode power converter has a power input from an AC electrical power source, a voltage feedback input, and an output connected to the set of light-emitting diodes. The driver circuit further comprises a current monitor circuit adapted to convert a current through the set of light-emitting diodes into a voltage feedback signal supplied to the voltage feedback input of the switching mode power converter. According to the invention, the switching mode power converter is a boost converter, comprising a controller having a power supply input, and the controller power supply input is connected to a tap in the set of light-emitting diodes. The invention can be used in a light bulb, led strip, led bar, led rope, etc.</p> |
