Method for simultaneously adapting driving of LED lamp with electric supply input and electronic ballast input

Abstract

The invention relates to the technical field of driving of LED lamps and particularly relates to a method for simultaneously adapting the driving of an LED lamp with electric supply input and electronic ballast input. The method comprises the following steps: (S101) detecting turn-off time of a power switch tube, and determining a driving state according to the turn-off time; and (S102) adapting input current of an electronic ballast when the driving state is an electronic ballast driving state. By virtue of the technical scheme of the embodiment, the driving state is determined by detecting the turn-off time of the power switch tube, the adjustment is not executed in an electric supply input state, and the input current is matched and adjusted in an electronic ballast input state; and the driving of the LED lamp can be adapted with currents input by the electric supply and the electronic ballast, and luminous fluxes are maintained at the same level.

Description

technical field [0001] The invention relates to the technical field of LED lamp driving, in particular to a method for LED lamp driving to simultaneously adapt to mains power input and electronic ballast input. Background technique [0002] A light-emitting diode (Light-EmittingDiode, LED) is a semiconductor electronic component that can convert electrical energy into light energy. The principle of making enough LEDs has led to a large number of new products, and LED lights are just one of them. With the popularization of LED lights, "LED" has become synonymous with LED lights in people's minds. [0003] Luminous flux refers to the radiant power that the human eye can perceive, which is equal to the product of the radiant energy of a certain band per unit time and the relative visibility of the band. The unit of luminous flux is "lumen". Luminous flux is usually represented by Φ. [0004] The current input for driving and controlling the current LED lights mainly include...

AI Technical Summary

Problems solved by technology

[0005] 1. Due to the different current impedance characteristics of the electronic ballast input and the mains input, the luminous flux output by the LED lamp is quite different;

[0006] 2. There are also differences in the output current of different electronic ballasts, resulting in a large difference in the output luminous flux of the LED lamp when the current is input.

Images