Fade-in or fade-out LED lamp programmable controller

Abstract

The invention provides a fade-in or fade-out LED lamp programmable controller, which comprises an AC-DC conversion part, a PWM control part, a fade-in or fade-out LED lamp programmable control unit, a digital display part and a power output part. The fade-in or fade-out LED lamp programmable controller has the beneficial effects that through the fade-in or fade-out LED lamp programmable controller, an LED lamp gradually brightens from dark when turned on, and gradually darkens from light when turned off; human vision can gradually adapt to a light illumination change; the discomfort is reduced; and the comfort and the safety are improved. The fade-in or fade-out LED lamp programmable controller has the beneficial effects that after the fade-in or fade-out LED lamp programmable controller is used, the impact to a lamp tube caused by an initial current is reduced; and the service lifetime of the LED lamp tube is prolonged. The working principle of the fade-in or fade-out LED lamp programmable controller is that an AC is converted into a DC through the AC-DC conversion part 1, and the duty ratio of the power output part is adjusted through the PWM control part 2, so that the target of outputting a stable voltage is achieved.

Description

technical field [0001] The invention relates to a programmable controller of an LED light that can gradually become brighter from dark when the LED light is turned on, and gradually darken from brighter when the light is turned off, which can improve the comfort of the customer's eyes gradually adapting to the environment, and avoid the interference of light and dark. The visual impact of human eyes, and can prolong the service life of LED lamps. Background technique [0002] Common LED light controllers on the market do not take any switching delay measures because they are powered by common switching power supplies; [0003] 1. When starting up, the standard voltage is directly connected to the LED lamp, which will cause a relatively large initial current impact on the LED lamp and reduce the life of the lamp tube, and when the human eyes are in the dark, if the brightness is directly increased , will give people a very uncomfortable feeling. [0004] 2. When the power i...

AI Technical Summary

Problems solved by technology

[0003] 1. When starting up, the standard voltage is directly connected to the LED lamp, which will cause a relatively large initial current impact on the LED lamp and reduce the life of the lamp tube, and when the human eyes are in the dark, if the brightness is directly increased , will give people a very uncomfortable feeling

[0004] 2. When the power is turned off, the ordinary LED light controller will immediately turn off the switch to cut off the power, and the light will be completely dark immediately, and the eyes will feel that they can't see anything.

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