| 摘要 |
An LED lamp arrangement adapted to replace a fluorescent lamp in a luminaire having a magnetic or an electronic ballast. The arrangement comprises a plurality of LEDs switchable among a plurality of circuit configurations, first means for sensing a frequency of power supplied to the arrangement by the luminaire and generating an output, and second means for switching the circuit configuration of the plurality of LEDs on the basis of the output of the first means for sensing frequency. |
