LED light string control circuit

A technology of LED light string and control circuit, which is applied in the direction of electric light circuit layout, energy saving control technology, electric light source, etc.

Active Publication Date: 2014-04-30
ZHEJIANG MINGSHUO ENERGY SAVING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to solve the problem of the inability to adjust the charging time and the lighting time of the LED light string when the light condition changes suddenly through the timer control, and the problem of false tri

Method used

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  • LED light string control circuit

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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 As shown, in one embodiment, a LED light string 20 control circuit 140 is used to control the multi-branch LED light string 20 , including a charging circuit 110 , a boost circuit 120 , a trigger circuit 130 and a control circuit 140 .

[0024] The charging circuit 110 includes a diode D1, the anode of the diode D1 is connected to the anode of the solar panel SR, the cathode is connected to the anode of the lithium battery BT, and the cathode of the solar panel SR and the cathode of the lithium battery BT are respectively grounded. Under good light conditions, when the positive output voltage of the solar panel SR is greater than the positive output voltage of the lithium battery BT, the positive output of the solar panel SR outputs a charging current, which flows through the diode D1 into the lithium battery BT, charg...

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Abstract

An LED light string control circuit is used for controlling multiple lines of LED light strings. The LED light string control circuit comprises a charging circuit, a boost circuit, a trigger circuit and a control circuit. According to the LED light string control circuit, when light conditions are good, the output voltage of a solar cell panel is made to achieve the effect that a transistor is made to be in an on state, a VOUT pin of a boost chip has no voltage output, and the control circuit and an LED light string are out of power and do not work; when the light conditions fade away gradually until the output voltage of the solar cell panel cannot maintain the transistor to be in the on state, the transistor enters an off state, and the VOUT pin of the boost chip outputs constant voltages to supply power for the control circuit and the LED lamp string. Therefore, the LED light string control circuit can automatically adjust charging time and the lighting time of the LED light string according to the light conditions, due to the fact that the output voltage of the solar cell panel is slow in changing, flexibility is not strong, false triggering cannot be generated, and control over the LED light string is relatively stable.

Description

technical field [0001] The invention relates to the field of lamp control, in particular to an LED lamp string control circuit. Background technique [0002] With the development and maturity of LED technology, LED, as a powerful tool for advertising and decoration, has become more and more popular, and has become an indispensable beautiful landscape for logo publicity and urban beautification. [0003] As high-tech products, LED light string products are widely used in municipal lighting, architectural lighting, landscape lighting, stage lighting, teaching lighting and other fields. Traditional LED light strings mainly use commercial power as the power supply. With the development and use of new energy sources, solar energy gradually enters the field of lighting. During the day, the light energy is converted into electrical energy through the solar panel, and the lithium battery is charged to supply power to the LED light string at night. The charging time of the solar p...

Claims

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Application Information

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IPC IPC(8): H05B37/02
CPCY02B20/40
Inventor 余海明赵鸣涛余海方汤朝林李涛李小梅
Owner ZHEJIANG MINGSHUO ENERGY SAVING TECH
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