| 摘要 |
The invention discloses an self-adaptive LED fluorescent lamp, comprising: a housing (9) consisting of a lampshade and a radiator fastened with each other, a Printed Circuit Board (PCB) consisting of one or more LED lamp sets and LED driving control units, and lamp caps (11) sleeved on two sides of the housing (9); the LED driving control unit comprises a voltage detection module (5), an intelligent switching module (6) and a linear constant current module (7); the voltage detection module (5) consists of a first resistor (R5) and a second resistor (R6), which are connected between two output ends of the rectifier filter module (4) for voltage division, and a first capacitor (C3) connected with the second resistor (R6) in parallel; the intelligent switching module (6) is connected with a common end of the first resistor (R5) and the second resistor (R6), the output of the intelligent switching module (6) is connected with a plurality of LED lamp sets, and each of the LED lamps is connected with a compensation resistor (R) in series; and the linear constant current module (7) consists of two IC linear driving chips. In the invention, the number of the LED lamps in serial connection is automatically changed by automatically detecting the output voltage of the rectifier (4), to reach the optimal driving efficiency, so as to ensure normal operating under any voltage. |
