LED LAMP, AND METHOD OF DRIVING AT LEAST ONE LED STRING THEREOF

摘要

The Light Emitting Diode (LED) lamp is adapted for mounting in a fluorescent tube mount having a selectively activatable magnetic ballast powering two pairs of sockets with AC power upon activation. The LED lamp has a body having connectors at both opposite ends adapted to the corresponding pair of sockets, at least one LED string extending along at least a portion of the body, a driver inside the body connecting the connectors to the LED string, the driver including a transistor, an inductor, and a rectifier in a switch mode converter configuration, for converting the AC power of the sockets into a DC power of a voltage adapted to power the LED string; and a pulse mode controller for controlling the transistor in an intermittent manner upon activation of the multiple fluorescent tube mount, until conduction across the at least one LED string is achieved.

主权项

1. A Light Emitting Diode (LED) lamp for mounting in a corresponding one of at least two pairs of sockets of a fluorescent tube mount, the fluorescent tube mount having a selectively activatable magnetic ballast powering two of the pairs of sockets with AC power upon activation, the LED lamp comprising:
a body having connectors at both opposite ends adapted to the corresponding pair of sockets; at least one LED string extending along at least a portion of the body; and a driver inside the body connecting the connectors to the LED string, the driver being configured to provide a progressive voltage increase to the at least one LED string during a period of time following activation of the magnetic ballast.