| 摘要 |
An LED tube lamp to be substituted for a fluorescent lamp includes an LED module 630 for emitting light; a rectifying circuit 510 for rectifying an external driving signal to produce a rectified signal; and a mode determination circuit 590 configured to detect a voltage or frequency or other property of the rectified signal, for selectively determining on performing a first mode or a second mode of lighting according to the state of the property of the rectified signal; wherein when the LED tube lamp performs the first mode of lighting, the mode determination circuit allows continual current to flow through the LED module until the external driving signal is disconnected from the LED tube lamp and when the LED tube lamp performs the second mode of lighting, the mode determination circuit regulates the continuity of current to flow through the LED module. The mode determination circuit is able to identify the type of ballast to which the lamp is connected and respond accordingly. |
