| 摘要 |
<p>Disclosed is an LED driver (10) including a power converter (12) connectable between a light switch (14) and a LED (16). A power detector is connected to the power converter (12) and detects when input power supply from the light switch (14) is turned on and off. A controller (20) is connected to the power converter (12) and the power detector and controls the power converter (12) to vary output power supply to, and hence change colour temperature of, the LED (16) depending on detecting an on/off time of the input power supply from the light switch (14).</p> |
