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Luminance balance circuit of light-emitting diode

A technology of light-emitting diodes and balanced circuits, which can be used in circuit layout, lamp circuit layout, semiconductor devices of light-emitting elements, etc., and can solve problems such as adjustment troubles

Inactive Publication Date: 2012-06-27
KUNDA COMP TECHKUSN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using two resistors for adjustment makes adjustment troublesome

Method used

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  • Luminance balance circuit of light-emitting diode
  • Luminance balance circuit of light-emitting diode
  • Luminance balance circuit of light-emitting diode

Examples

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no. 1 example

[0020] The brightness balance circuit of the light-emitting diode of the present invention is connected between a power supply 30 and the ground 35. In the first embodiment, the brightness balance circuit of the light-emitting diode includes:

[0021] A variable resistor 33, the variable resistor 33 includes a first end 331, a second end 332 and an adjustment end 330, the first end 331 is connected to the power supply 30, the second end 332 is grounded 35;

[0022] A first light emitting diode 31, one end of the first light emitting diode 31 is connected to the power supply 30, and the other end is connected to the adjusting end 330 of the variable resistor 33;

[0023] A second light emitting diode 32 , one end of the second light emitting diode 32 is connected to the adjustment end 330 of the variable resistor 33 , and the other end is grounded 35 .

[0024] In this embodiment, a first resistor 36 is provided between the first terminal of the variable resistor 33 and the pow...

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Abstract

The invention provides a luminance balance circuit of a light-emitting diode (LED), which is connected between a power supply and the ground. The luminance balance circuit of the LED comprises a variable resistor, a first light-emitting diode and a second light-emitting diode, wherein the variable resistor comprises a first end, a second end and an adjusting end, the first end is connected with the power supply, and the second end is connected with the ground; one end of the first light-emitting diode is connected with the power supply, while the other end is connected with the adjusting end of the variable resistor; and one end of the second light-emitting diode is connected with the adjusting end of the variable resistor, while the other end is connected with the ground. By using the luminance balance circuit of light-emitting diode, the same luminance of the two LEDs during working can be achieved through easy adjustment.

Description

【Technical field】 [0001] The invention provides a light-emitting diode brightness balance circuit, in particular a balance circuit for the brightness of two light-emitting diodes. 【Background technique】 [0002] LED is the abbreviation of English light emitting diode (light emitting diode), which is a semiconductor that can convert electrical energy into visible light. For current light-emitting diodes, it is usually adopted figure 1 circuit to work. [0003] see figure 1 , figure 1 The working circuit of two light-emitting diodes in the prior art is shown. The circuit is electrically connected between a power supply 100 and ground 101, and the circuit includes two parallel first light-emitting diodes 11 and second light-emitting diodes 12 of the same specification, and the above-mentioned two light-emitting diodes are connected in parallel and then connected in series with a voltage dividing resistor 10 Partial pressure. Due to the first light emitting diode 11 and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21V23/00H05B37/02F21Y101/02F21Y115/10
CPCY02B20/42Y02B20/40
Inventor 许世法
Owner KUNDA COMP TECHKUSN