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Dimming circuit for LED lights

A dimming circuit and LED lamp technology, applied in the circuit field, can solve problems such as high cost and complex control circuit, and achieve the effect of reducing manual operation costs

Active Publication Date: 2016-08-31
OCEANKING DONGGUAN LIGHTING TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing LED lamps that can adjust the brightness of the light are all manually adjusted.
Even if there are some LED lamps that can automatically adjust the brightness of the light according to the ambient light intensity, the control circuit is relatively complicated and the cost is high.

Method used

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  • Dimming circuit for LED lights

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Embodiment Construction

[0015] In order to further illustrate the principle and structure of the present invention, the preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0016] figure 1 A circuit diagram of a dimming circuit for an LED lamp according to the first embodiment of the present invention is shown. The dimming circuit of the LED lamp includes a DC power supply, a first resistor 91 , a Zener diode 1 , a load capacitor 2 , an operational amplifier unit 7 , a voltage divider unit 5 , a feedback unit 6 and an LED light source group 8 . The operational amplifier unit 7 has a power connection pin 73 , a ground pin 71 , a positive input pin 74 , a negative input pin 75 and an output pin 72 . The feedback unit 6 includes a second resistor 92 and a third resistor 93 . The voltage dividing unit 5 includes a photoresistor 3 , a fifth resistor 95 and a sixth resistor 96 .

[0017] The LED light source group 8 includes one li...

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PUM

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Abstract

The invention provides a dimming circuit for an LED lamp, which is characterized in that it includes: a DC power supply, a first resistor, a voltage-stabilizing diode, a load capacitor, an operational amplification unit, a voltage dividing unit, a feedback unit, and an LED The light source group, wherein the voltage dividing unit includes a photoresistor; when the photoresistor is in a dark resistance state, the operational amplification unit controls the LED light source group to turn on and emit light; when the photoresistor is in a bright resistance state, The operational amplification unit controls the LED light source group to turn off and not emit light.

Description

technical field [0001] It relates to the field of circuits, in particular to a control circuit of an LED lamp. Background technique [0002] LED lamps have been widely used in various lighting industries in recent years with the biggest advantage of energy saving and emission reduction. Some LED lamps have the function of adjusting the brightness of the light, so that the brightness of the LED lamp can be adjusted and changed according to the intensity of the ambient light. However, the existing LED lamps capable of adjusting the brightness of the light are all adjusted manually. Even if there are some LED lamps that can automatically adjust the brightness of the light according to the intensity of the ambient light, the control circuit is relatively complicated and the cost is high. SUMMARY OF THE INVENTION [0003] The invention provides a dimming circuit for an LED lamp, which is characterized in that it includes: a DC power supply, a first resistor, a voltage-stabili...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
Inventor 周明杰林锦旭
Owner OCEANKING DONGGUAN LIGHTING TECH
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