CN202171232U

CN202171232U - LED (Light Emitting Diode) series-to-parallel circuit

Info

Publication number: CN202171232U
Application number: CN2011202902331U
Authority: CN
Inventors: 张卫民; 许廷刚
Original assignee: Sichuan Jiuzhou Optoelectronics Technology Co Ltd
Current assignee: Sichuan Jiuzhou Electronic Technology Co Ltd; Sichuan Jiuzhou Optoelectronics Technology Co Ltd
Priority date: 2011-08-11
Filing date: 2011-08-11
Publication date: 2012-03-21
Anticipated expiration: 2021-08-11

Abstract

The utility model discloses an LED (Light Emitting Diode) series-to-parallel circuit which belongs to an LED control circuit. The LED series-to-parallel circuit comprises a signal amplification chip and series-to-parallel chips, wherein the series-to-parallel chips are accessed to the signal amplification chip, the signal amplification chip is used as the signal input end in the circuit and accessed to a bus or other signal output ends, at least two series-to-parallel chips are arranged in the circuit, one series-to-parallel chip is accessed to an LED lamp to control the load of the LED lamp, the other series-to-parallel chip is used as the signal output end in the circuit and connected with other signal input ends, and at least two series-to-parallel chips are respectively accessed to the signal amplification chip. The LED series-to-parallel circuit provided by the utility model is simple in structure, can be used in any LED lighting products and is wide in application scope.

Description

A kind of LED string changes and circuit

Technical field

The utility model relates to a kind of LED control circuit, and a kind of LED string of saying so more specifically changes and circuit.

Background technology

At present, the LED control technology is comparatively ripe, can control the states such as open and close of LED light fixture through the LED control circuit; But just have variety of issue from being born from initial LED control circuit always, in the field be at first adopt string to change and chip like 595 series, 9712 series; 6803 series, 2801 series realize that circuit is when carrying out LED series connection electricity; Also can carry out the transmission of control signal, promptly their common ground is that serial signal gets into chip, and parallel signal comes out from chip; Its advantage is that transmission line is few, and control is counted many, and its shortcoming is that signal is simple serial transmission in the circuit; When some string wherein changes and after chip goes wrong, chip afterwards will can not receive signal or receive that rub-out signal causes the partial L ED light fixture in the circuit to use, and in the field for overcoming this this shortcoming; A kind of emerging control mode DMX512 begins to popularize, though DMX512 is that a string in the unit changes and chip goes wrong in theory, can not influence the use of LED light fixture in other unit in the circuit; But in actual use, its shortcoming also is fatal, and the first needed to write the address one by one to the LED light fixture in each unit before circuit uses; And the address can not be identical, and it two is that other point also will be seriously influenced if problem and clamper bus voltage appear in some unit transmission point; Like undertension etc.; And this situation is to utilize the most common problem of DMX512 control mode engineering site construction, so the DMX512 control mode is changeed with traditional string and chip is connected, and all there is different defects in signal transmission form, is necessary the LED control circuit is done further to improve.

The utility model content

The purpose of the utility model is to solve above-mentioned deficiency; After a LED light fixture when use is provided in the middle of the control circuit damages; Can not influence the use of LED light fixture in other unit in the entire circuit, can effectively eliminate receiving LED light fixture load effect to cause a kind of LED string of the defective that control signal is fragile in the circuit to change and circuit.

For solving above-mentioned technical problem, the utility model adopts following technical scheme:

A kind of LED string that the utility model provided changes and circuit; Comprise that signal amplifies chip and changes and chip with string; String changes also chip access signal amplification chip, and signal amplifies chip as the signal input part in the circuit, and signal amplifies chip access bus or other signal output part; Described string changes and chip is set at least two in circuit; One of them string changes also its load of chip access LED light fixture control, and another links to each other with other signal input part as the signal output part in the circuit, and at least two strings change also, and chip inserts signal amplification chip respectively.

Technical scheme further is: described circuit is an element circuit in the LED control circuit, includes a plurality of identical element circuits in the LED control circuit, and series connection each other.

Compared with prior art; The beneficial effect of the utility model is: changeing also through the string in the traditional structure circuit, chip is set at least two; Load of LED light fixture and signal by different strings changes and chip carries out in the circuit transmit; The path of whole signal will not receive the influence of LED light fixture load; Also can not influence the use of LED light fixture in other unit in the entire circuit after LED light fixture in its actual use in the middle of the control circuit and the damage, the more effective elimination receives LED light fixture load effect to cause the fragile defective of control signal in the circuit, and a kind of LED string that the utility model provided changes, and also circuit structure is simple; Be suitable in any LED illuminating product, using, range of application is wide.

Description of drawings

Fig. 1 is the electrical block diagram of the utility model.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further elaborated.

As shown in Figure 1, a kind of LED string that the utility model provided changes and circuit, comprises that signal amplifies chip and changes and chip with string; String changes and chip inserts signal amplification chip; Signal amplifies chip as the signal input part in the circuit, and signal amplification chip access bus or other signal output part, and described string changes and chip is set at least two in circuit; One of them string changes and chip inserts its load of LED light fixture control; Another links to each other with other signal input part as the signal output part in the circuit, and at least two strings change and chip inserts signal respectively and amplifies chip, and described LED string changes and circuit is as an element circuit in the LED control circuit; Include a plurality of identical element circuits in the LED control circuit; And series connection is each other implemented control to a plurality of LED light fixtures simultaneously, realizes the transmission of signal in the LED control circuit through signal input part in each element circuit and output.

The course of work of the utility model is following: behind the signal input part in the signal input unit circuit; Amplify chip by signal it is divided into two-way output; One the tunnel only controls the LED load; Another road only is used for control signal output, and promptly changeing also by string, chip exports control signal in another element circuit signal input part.

Claims

1. a LED string changes and circuit; Comprise that signal amplifies chip and changes and chip with string; String changes also chip access signal amplification chip, and signal amplifies chip as the signal input part in the circuit, and signal amplifies chip access bus or other signal output part; It is characterized in that: described string changes and chip is set at least two in circuit; One of them string changes also its load of chip access LED light fixture control, and another links to each other with other signal input part as the signal output part in the circuit, and at least two strings change also, and chip inserts signal amplification chip respectively.

2. LED string according to claim 1 changes and circuit, and it is characterized in that: described circuit is an element circuit in the LED control circuit, includes a plurality of identical element circuits in the LED control circuit, and series connection each other.