Electric current soft-starting circuit for driving alternating-current LED
A soft start circuit and LED driving technology, which is applied in the direction of electric lamp circuit layout, electric light source, lighting device, etc., can solve the problems of shortened service life, large impact, damaged LED, etc., so as to improve the safety and reliability of the circuit and prolong the service life Effect
Inactive Publication Date: 2013-09-04
SHENZHEN BOYONG TECH
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Problems solved by technology
[0003] Most of the start-up circuits for AC LED driving in the prior art LED lamps do not have a soft-start scheme, but directly drive the LEDs in the LED lamps, resulting in an instantaneous increase in the current flowing through the LEDs. , LED lamp bead) itself has a great impact, which is likely to shorten the service life of the LED, or even damage the LED, that is, the safety is not high
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[0012] The present invention will be further described below in conjunction with the accompanying drawings.
[0013] Please refer to figure 1 , the present invention is used for the electric current soft-start circuit of AC LED drive, and it comprises rectification circuit, several LED series units, several start-up channels matched one by one with several LED series units, resistance R; The input terminal of rectification circuit is connected with AC , the output terminal of the rectifier circuit is connected to the input terminal of the first LED series unit, so that the rectifier circuit rectifies the input AC power into DC power; several LED series units are connected in series in sequence; the reference voltage terminal of the starting channel inputs the corresponding reference voltage, The input terminal of the startup channel is connected to the output terminal of the corresponding LED series unit, the output terminal of the startup channel is connected to one end of th...
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The invention discloses an electric current soft-starting circuit for driving an alternating-current LED. The electric current soft-starting circuit for driving the alternating-current LED comprises a rectifying circuit, a plurality of LED series connection units, a plurality of starting channels which are matched with the LED series connection units in a one-to-one mode, and a resistor R. When LEDs in an LED lamp are driven, the electric current soft-starting circuit for driving the alternating-current LED can control electric current of the LEDs in the whole LED lamp to slowly increase through the starting channels, the electric current flowing through the LEDs in the LED lamp can not increase instantly, so that safe reliability of the electric current soft-starting circuit for driving the alternating-current LED is improved, and the service life of the LEDs is prolonged.
Description
technical field [0001] The invention relates to the technical field of LED lamps, in particular to a current soft start circuit for driving an AC LED. Background technique [0002] LED (Light Emitting Diode, Light Emitting Diode) is a new generation of light source that uses semiconductor materials as the electro-optical conversion medium. It has the characteristics of energy saving, environmental protection, long life and small size. It will soon replace energy-saving lamps and become the mainstream lighting. With the implementation of the global ban on production and sales of incandescent lamps, LED lighting will face the opportunity to replace incandescent lamps, with a market size of hundreds of billions. [0003] Most of the start-up circuits for AC LED driving in the prior art LED lamps do not have a soft-start scheme, but directly drive the LEDs in the LED lamps, resulting in an instantaneous increase in the current flowing through the LEDs. , LED lamp bead) itself h...
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Inventor 刘成军黄杰忠
Owner SHENZHEN BOYONG TECH