Method for stabilizing working current of light emitting diode (LED) power-saving lamp

A technology of working current and stabilizing devices, which is applied in the direction of lamp circuit layout, lighting devices, electric light sources, etc., can solve problems such as fluctuations in luminous brightness, dimming of LED energy-saving lamps, etc., and achieve the effect of ensuring stability

Inactive Publication Date: 2013-11-13
宗慎平 +3
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Moreover, because the traditional switching power supply is not used, the return electromagnetic interference is minimized
But this kind of LED energy-saving lamp also has a disadvantage, that is, like ordinary incandescent lamps, its luminous brightness will also fluctuate with the fluctuation of the mains voltage, that is, when the AC mains voltage is low, the LED energy-saving lamp appears dim, and It will be brighter when the AC mains voltage is high

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  • Method for stabilizing working current of light emitting diode (LED) power-saving lamp
  • Method for stabilizing working current of light emitting diode (LED) power-saving lamp
  • Method for stabilizing working current of light emitting diode (LED) power-saving lamp

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Embodiment Construction

[0017] Such as figure 2 As shown, the LED energy-saving lamp adopting the working current stabilizing device of the present invention includes a single-circuit circuit formed by connecting light-emitting diodes N1-Nn in series, and each light-emitting diode is connected in parallel with voltage-stabilizing diodes W1-Wn. At the end of the series circuit of the LED light-emitting tube (sometimes it can also be connected to the high end) a three-terminal voltage regulator Q is added. The "1" pin of the three-terminal voltage stabilizer Q is the input end, and the "2" pin is the output end. 3" pin is the ground terminal. Because the voltage at the output terminal of the three-terminal regulator Q is stable, the current flowing through the load R3 is also stable, which ensures the stability of the working current of the LED series circuit, thereby also ensuring the stability of the luminance of the LED energy-saving lamp.

[0018] In the device of the present invention, the three...

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Abstract

The invention discloses a method for stabilizing the working current of a light emitting diode (LED) power-saving lamp, which is characterized in that the end of a luminotron series circuit of the LED power-saving lamp is additionally connected with a three-end voltage stabilizer. Since the output end of the three-end voltage stabilizer is stable, current passing through a load is also stable, and the stability of the working current of an LED series circuit is ensured. Therefore, even though the voltage of alternating current (AC) commercial power fluctuates, the luminance brightness of the LED power-saving lamp can be still kept stable. The method is especially suitable for the LED power-saving lamp which can be directly butted with the alternative current commercial power and has LED open circuit damage protection.

Description

technical field [0001] The invention relates to a working current stabilizing device of an LED energy-saving lamp. Background technique [0002] With the increasing development of science and technology, LED energy-saving lamps using ultra-bright light-emitting diodes are widely used in daily lighting, agriculture, and biological lighting due to their advantages of high efficiency, power saving, longevity, green environmental protection, quick opening, and no vibration. , traffic signals, decoration and other fields. For example, LED energy-saving lamps made of two utility model patents with patent numbers of 200620105207.6 and 200820162356.5 can be directly connected to AC mains, and have the protection function of LED open-circuit damage, which makes LED energy-saving lamps develop to a practical stage. Picture 1-1 and Figure 1-2 What is shown is the circuit diagram of the above-mentioned LED energy-saving lamp. This circuit can be a single circuit according to the requ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/00
Inventor 宗慎平皮剑平杨晓峯邵榴子宗稚鹏王丽华张波徐秀耿
Owner 宗慎平
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