| 摘要 |
<p>A lighting device has one or more light sources; a primary input power connection; and electronic circuitry for controlling delivery of power from the primary input power connection to the one or more light sources. The electronic circuitry determines an indication of an external electrical loading on a primary power supply network coupled, in use, with the primary input power connection the circuitry varies the power drawn from the primary input power connection in dependence upon the determined indication of the external electrical loading on the primary power supply network. In this way, during times of high demand on the primary supply network, the lighting device can reduce the amount of power drawn from the primary supply.</p> |
