Power circuit for adjusting brightness of light source based on protection-type ripple suppression circuit

A technology for suppressing the brightness of circuits and light sources, which is applied in the direction of electric light sources, light sources, and electric lamp circuit layouts. It can solve problems such as large current fluctuations, flickering, and insufficiently stable changes in light brightness, so as to achieve stable operation and a good sense of experience. Effect

Inactive Publication Date: 2016-10-26
CHENGDU CHUANTONGDA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the current fluctuations of the current adjustable light source during dimming, which makes the brightness of the light change not stable enough, and is prone to flickering. The current changes linearly, so as to ensure the smooth change of the light intensity during dimming. The power supply circuit for adjusting the brightness of the light source based on the protective ripple suppression circuit

Method used

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  • Power circuit for adjusting brightness of light source based on protection-type ripple suppression circuit
  • Power circuit for adjusting brightness of light source based on protection-type ripple suppression circuit
  • Power circuit for adjusting brightness of light source based on protection-type ripple suppression circuit

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Embodiment

[0019] Such as Figure 1~3 As shown, the power supply circuit for adjusting the brightness of the light source based on the protective ripple suppression circuit of the present invention is mainly composed of a control chip U1, a resistor R5, a capacitor C4, a diode D1, a diode D2, a linear rectifier circuit, a ripple suppression circuit, and a protection circuit and dimming circuit. Specifically, the linear rectification circuit is respectively connected to the TRIAC pin and the HCD pin of the control chip U1; the P pole of the diode D1 is connected to the HCD pin of the control chip U1, and its N pole is respectively connected to the VCC pin of the control chip U1. The pin is connected to the linear rectification circuit. The P pole of the diode D2 is connected to the linear rectification circuit, and its N pole is connected to the DIM pin of the control chip U1. The dimming circuit is respectively connected to the FB pin and the GATE pin of the control chip U1; one end of...

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Abstract

The invention discloses a power circuit for adjusting the brightness of a light source based on a protection-type ripple suppression circuit, which is characterized by mainly comprising a control chip U1, a resistor R5, a capacitor C4, a diode D1, a diode D2, a linear rectification circuit, a ripple suppression circuit, a protection circuit and a light adjusting circuit. A BP3108 integrated chip is combined with a peripheral circuit, changes of resistance of a slide rheostat RP can be controlled, current of the power circuit presents linear changes in the case of light adjusting, the lighting intensity can be ensured to change stably in the case of light adjusting, no flashing phenomenon appears, good experience feeling is brought to the user, and promotion and application are facilitated.

Description

technical field [0001] The invention relates to a power supply circuit, in particular to a power supply circuit for adjusting the brightness of a light source based on a protective ripple suppression circuit. Background technique [0002] With the development of society and the improvement of living standards, the light sources currently used are no longer limited to a single lighting function, and the types and functions of light sources are also diversified. People can choose light sources of different colors according to the needs of use. In order to better match the environment and better meet the needs of different users, the brightness of some light sources can also be adjusted during use. However, at present, the current of the adjustable light source fluctuates greatly during dimming, which makes the change of the light brightness not stable enough, and is prone to flickering, thus bringing a bad experience to the user. Contents of the invention [0003] The purp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02H05B47/10H05B47/20H05B47/24H05B47/25
CPCH05B47/10
Inventor 不公告发明人
Owner CHENGDU CHUANTONGDA TECH CO LTD
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