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Adjustable high brightness light emitting diode LED lighting driving circuit

A light-emitting diode, LED lighting technology, applied in lighting devices, electric lamp circuit layout, light source and other directions, can solve the problems of low AC power supply flicker, power consumption, efficiency cannot be improved, etc., achieve strong marketability, low power consumption, improve The effect of alternating current usage

Inactive Publication Date: 2009-07-15
上海纳晶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Each method has certain disadvantages in terms of energy saving
The magnetic flux leakage and copper loss of the step-down method of the transformer make it impossible to improve the efficiency, coupled with the large size and high price, it is not suitable for LED drive units
The resistance in the resistance method converts electrical energy into heat energy, which not only consumes electrical energy, but also has adverse effects on surrounding devices and the environment
Low AC power supply has flickering phenomenon, which is not good for eyes
DC grouping is also inefficient due to the power consumption of the balancing resistor

Method used

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  • Adjustable high brightness light emitting diode LED lighting driving circuit

Examples

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example 1

[0009] Example 1: One end of the input power supply (1) is connected with one end of the capacitor 1 (5) and the input end of the high-voltage AC-DC converter (2), so that the AC 220V mains rectification becomes 300-310V DC high voltage and filtered One end of the high-voltage AC-DC converter (2) is connected to one end of an LED combined light-emitting tube (3) formed by connecting about 100 LED tubes in series, and the other end of the LED combined light-emitting tube (3) is connected to an isolation controller (4 ) to change the current intensity of the filtered LED to achieve the purpose of changing the light intensity; the other end of the high-voltage AC-DC converter (2) is connected to one end of the capacitor 2 (6) and the isolation controller (4), and the isolation control The other end of the potentiometer (4) is connected to one end of the adjustable potentiometer (9), which plays an isolation role to prevent the user from touching high voltage when adjusting the pot...

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Abstract

The invention relates to the field of lighting control circuits, in particular to an adjustable high-brightness light-emitting diode LED lighting drive circuit, which includes an input power supply, a capacitor, a high-voltage AC-DC converter, a low-voltage AC-DC converter, an LED combined light-emitting tube, a filter Voltage stabilizer, resistor, adjustable potentiometer, isolation controller, compared with the prior art, the present invention can adjust the intensity of light, can improve the utilization rate of alternating current, low power consumption, low cost and strong versatility of devices, conforms to current The demand for energy saving has strong marketability and is worth promoting.

Description

[technical field] [0001] The invention relates to the field of lighting control circuits, in particular to an adjustable high-brightness light-emitting diode LED lighting driving circuit. [technical background] [0002] LED is a semiconductor light emitting device. To "light up" it needs a low voltage (usually 2-4V) and a small current (about a few to tens of milliamperes). In order to use 220V AC power supply to make the LED light normally, the following methods are usually adopted: transformer step-down method, resistor voltage division or resistor current limiting, low AC power supply, DC group power supply and pulse width modulation (PWM) and other methods. Each method has certain disadvantages in terms of energy saving. The magnetic flux leakage and copper loss of the step-down method of the transformer make it impossible to improve the efficiency. In addition, the large volume and high price are not suitable for LED drive units. The resistance in the resistance meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/02H02M7/217H05B37/02
Inventor 孙鹏杨介信
Owner 上海纳晶科技有限公司
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