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Control circuit and control method for multiple groups of light-emitting diode lamp strings

A technology of light-emitting diode lamps and light-emitting diodes, applied in the direction of electrical components, etc., can solve problems such as difficult sequencing and different lighting effects, and achieve the effect of low cost and convenient manufacture

Pending Publication Date: 2021-11-12
ANAPEX TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to solve the problem that the existing light-emitting diode lamp strings are difficult to sequence and produce different luminous effects when multiple groups are connected in series or in parallel.

Method used

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  • Control circuit and control method for multiple groups of light-emitting diode lamp strings
  • Control circuit and control method for multiple groups of light-emitting diode lamp strings
  • Control circuit and control method for multiple groups of light-emitting diode lamp strings

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Embodiment Construction

[0013] The detailed description and technical content of the present invention are described as follows with respect to the accompanying drawings.

[0014] figure 1 It is a schematic diagram of a circuit structure according to an embodiment of the present invention, figure 1 A control circuit for a plurality of LED lamp strings is shown, including a LED lamp string group 10, a controller 20 and at least one identification resistor 30. The LED lamp string group 10 includes a plurality of LED lamp strings. In this paper In the embodiment, the LED lamp string includes a first LED lamp string 10a, a second LED lamp string 10b and a third LED lamp string 10c, the first LED lamp string 10a, the second LED lamp string The LED light string 10b and the third LED light string 10c are connected in series through a single series connection 40 , and the LED light strings are electrically connected to the controller 20 through the series connection 40 , thereby forming a series connection....

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Abstract

The invention relates to a control circuit and a control method for multiple groups of light-emitting diode lamp strings. The control circuit for multiple groups of light-emitting diodes comprises a light-emitting diode lamp string group, a controller and at least one identification resistor, the light-emitting diode lamp string group comprises a plurality of light-emitting diode lamp strings which are connected in series through a single series connection wire, and each light-emitting diode lamp string comprises at least one light-emitting diode module. Each light-emitting diode module comprises a light-emitting diode chip and a driving circuit electrically connected with the light-emitting diode chip, the controller is electrically connected with the light-emitting diode lamp string group, and the identification resistor is electrically connected to the serial connection wire and located behind an output end of the light-emitting diode module. The driving circuits respectively output a feedback signal and send the feedback signal back to the controller, the feedback signal passing through the identification resistor and the feedback signal not passing through the identification resistor have different signal levels, and the controller distinguishes different light emitting diode modules according to the signal levels.

Description

technical field [0001] The present invention relates to a control circuit and a control method of light emitting diodes, in particular to a control circuit and a control method of multiple groups of light emitting diodes. Background technique [0002] Light-emitting diodes have the characteristics of high luminous efficiency, light volume, and non-destructive properties. They have been widely used in the field of daily lighting. With the change of use requirements, it has become normal to install different numbers and colors of light-emitting diodes in lighting components. At the same time In order to control these light emitting diodes with different numbers and colors to produce different lighting effects, the control circuit is also arranged in the light emitting diode circuit. [0003] Among many application fields, one of them is a light string comprising a plurality of light-emitting diode chips, which can be combined in series or in parallel to achieve different light...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B45/10
Inventor 黄宗文
Owner ANAPEX TECH
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