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Light adjusting circuit

A dimming circuit and dimming controller technology, which is applied in the direction of electric lamp circuit layout, light source, electric light source, etc., can solve the problems of flickering and unevenness of lighting components, and achieve the effect of stable brightness change

Active Publication Date: 2013-10-30
MIDAS WEI TRADING +1
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AI Technical Summary

Problems solved by technology

If the TRIAC conduction angle is adjusted to a small value, so that the Vcc DC operating voltage of the IC is between the start voltage and the stop voltage, the IC will enter a state of starting and stopping, which will cause flickering of the lighting components.
In addition, the conduction angle of TRIAC of each brand is different. For example, when the TRIAC of brand A is adjusted so that the light bulb does not flicker, when the TRIAC of brand A is replaced by the TRIAC of brand B, the conduction angle will also be different. Angle issues can cause lighting elements to flicker

Method used

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Embodiment Construction

[0024] Because dimming is very important in many applications, because it can make the brightness of the light meet the needs of various environments, this invention can achieve the normal function of changing the brightness of the lamp from full darkness to full brightness at will, and can effectively save energy at the same time. Therefore, the present invention proposes a novel dimming circuit to improve the problem of light flickering caused by the low conduction angle of the existing TRIAC dimming.

[0025] like figure 1 Shown is a schematic diagram of the first embodiment of the present invention. The dimming circuit includes a dimming controller 10 , a rectifier 12 , a power controller 14 , a driving controller 16 and a battery 18 . The dimming controller 10 is electrically connected to an AC power source 20 , such as a commercial power supply. The dimming controller 10 receives a first AC voltage from the AC power source 20 and receives a brightness adjustment signal ...

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Abstract

A light adjusting circuit, it provide power required for an overall operation of light adjusting circuit, and it utilizes a light adjusting controller to perform light adjusting of load. During light adjusting, in case operating voltage of a driving controller is equal to or greater than a threshold value, then a rectifier or a power controller provides a first power supply to driving controller through an AC voltage adjusted by light adjusting controller, so that it can regulate a driving voltage through power controller based on DC voltage variation, to drive a load. Otherwise, in case operating voltage of driving controller is less than threshold value, it is switched to a battery to provide a second power supply to driving controller, to make it have stable operating voltage, control power controller to output driving voltage to load, to eliminate blinking of load when conduction angle is small.

Description

technical field [0001] The invention relates to a dimming circuit, in particular to a dimming circuit which utilizes a built-in battery to maintain a sufficient operating voltage for a drive controller to stabilize load operation. Background technique [0002] Light plays an indispensable lighting role in people's daily life, which enables the human eye to see things clearly, thus bringing convenience to people's life and work. In order to provide people with sufficient light source in a dark environment or at night, lighting products have been widely used in daily life. Furthermore, lighting electricity accounts for a very high proportion of a country's electricity consumption, and it seems that it cannot be separated from the existing human life style. In recent years, energy and environmental protection issues have received attention. While energy, economy, and environmental protection must be balanced, And with the improvement of the quality of life, lighting is no long...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02H05B44/00
CPCH05B37/02H05B37/0209H05B45/10H05B47/10H05B41/38H05B47/175
Inventor 魏道金尤国益
Owner MIDAS WEI TRADING
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