Light-emitted diode (LED) daylight lamp power source compatible with fluorescent lamp system

Abstract

The invention provides a light-emitted diode (LED) daylight lamp power source compatible with a fluorescent lamp system. The LED daylight lamp power source compatible with the fluorescent lamp system comprises a first bridge rectifier, a second bridge rectifier, a constant-current control and positive feedback circuit (PFC) correcting module and a smooth rectifier module. The first bridge rectifier and the second bridge rectifier are respectively connected with the constant-current control and PFC correcting module which is connected with the smooth rectifier module. The first bridge rectifier and the second bridge rectifier are used for converting an input alternating current into a direct current and sending the direct current to the constant-current control and PFC correcting module. The constant-current control and PFC correcting module is used for adjusting the direct current and sending the direct current to the smooth rectifier module which is used for smoothing and rectifying the direct current and outputting the direct current. According to the technical scheme of the LED daylight lamp power source compatible with the fluorescent lamp system, no matter which kind of ballast resistors is arranged inside a traditional daylight lamp support, the daylight lamp support is not needed to be changed. After the LED source is installed, the LED daylight lamp can be used, and therefore a first condition is conveniently provided for popularization and using of the LED daylight lamp.

Description

[0001] technical field [0002] The present invention relates to the technical field of LED fluorescent lamp power supply, in particular to a fluorescent lamp compatible LED fluorescent lamp power supply, that is, without removing the starter and ballast on the fluorescent lamp tube bracket, and without changing anything on the fluorescent lamp tube bracket , suitable for four-terminal input on the fluorescent light tube bracket, directly installed on the LED fluorescent lamp power supply that can work normally. [0003] Background technique [0004] like figure 1 and figure 2 As shown, traditional fluorescent lamps use two types of ballasts, which are inductive (low-frequency) and electronic (high-frequency) ballasts. Since traditional fluorescent lamps need a starter to start, inductive ballasts generate several times The mains high voltage is used to start the fluorescent lamp, and the electronic ballast uses the resonant circuit to generate high voltage to start. ...

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Problems solved by technology

[0007] The above method cannot be used by end consumers, and must have quite professional skills. At the same time, it is very inconvenient and unsafe to operate.

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