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Strobe-free LED dimming circuit

A dimming circuit, no stroboscopic technology, applied in the field of LED dimming, it can solve the problems of light flicker, can not work normally, and the dimming depth cannot reach 1-10%, and achieve the effect of fine dimming signal

Pending Publication Date: 2017-12-08
UP SHINE LIGHTING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the dimming depth of LED products with dimming function in the market cannot reach 1-10%. The reason is that when the dimming reaches 0-7%, the product will flash or not work normally.

Method used

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  • Strobe-free LED dimming circuit
  • Strobe-free LED dimming circuit
  • Strobe-free LED dimming circuit

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Embodiment Construction

[0019] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0020] Such as figure 1 As shown, the flicker-free LED dimming circuit includes a power supply module, a PWM control module, a switch circuit, an LED lamp, an integrating circuit and a PWM signal terminal, and the output terminals of the power supply module are respectively connected to the input terminals of the PWM control module. and the input end of the switch circuit is connected; the PWM signal end is connected with the input end of the PWM control module through the integration circuit, and the PWM signal is input to the PWM control module; the output end of the PWM control module is connected to the input end of the switch circuit The connection is to control the opening and closing of the switch circuit, and the output terminal of the switch circuit is connected with the LED lamp. Further, it als...

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Abstract

The invention discloses a strobe-free LED dimming circuit which comprises a power supply module, a PWM control module, a switch circuit, an LED lamp, an integrating circuit and a PWM signal terminal, wherein the output end of the power supply module is connected with the input end of the PWM control module and the input end of the switch circuit; the PWM signal terminal is connected to the input end of the PWM control module through the integrating circuit and inputs a PWM signal into the PWM control module; the output end of the PWM control module is connected to the input end of the switch circuit and controls the on-off state of the switch circuit; and the output end of the switch circuit is connected with the LED lamp. In virtue of the integrating circuit, the signal input from the PWM signal terminal to the PWM control module is linearly smooth so that a dimming signal is exquisite. When the dimming reaches 0 to 7%, a product does not flash or work improperly.

Description

technical field [0001] The invention relates to the technical field of LED dimming, in particular to a flicker-free LED dimming circuit. Background technique [0002] Dimming depth is the dimming ratio when the dimming is turned to the minimum. [0003] Since human beings realize that we must do everything possible to save energy and reduce emissions in order to solve the urgent problem of atmospheric warming, how to reduce lighting power consumption has become an important issue on the agenda. Because lighting electricity accounts for 20% of the total energy consumption. Fortunately, high-efficiency and energy-saving LEDs have appeared. LEDs are more than 5 times more energy-efficient than incandescent lamps, and about twice as energy-saving as fluorescent lamps and energy-saving lamps. They are not like fluorescent lamps and energy-saving lamps. Contains mercury. If you can also use dimming to save energy, it is also a very important means of energy saving. But in the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/10H05B45/37Y02B20/30
Inventor 胡志华苏宗才谢祖华
Owner UP SHINE LIGHTING CO
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