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An aging test device for detecting the stability of LED power drive performance

A technology of LED power supply and aging test, applied in the direction of power supply test, etc., can solve the problems of LED driver aging, can not start with false load, etc., to achieve the effect of low cost, convenient operation, and solving potential safety hazards.

Active Publication Date: 2017-01-25
FOSHAN TOPDAY OPTOELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, solve the problem that LED drive aging cannot start with a dummy load, and design a safe and effective aging test device for testing the performance stability of LED drive power supply

Method used

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  • An aging test device for detecting the stability of LED power drive performance
  • An aging test device for detecting the stability of LED power drive performance

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Embodiment Construction

[0015] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0016] Such as Figure 1 to Figure 2 As shown, this embodiment is an aging test device for testing the stability of the driving performance of LED aging power supply, including a voltage clamp circuit, a power switch tube drive and protection circuit, a power switch tube, an LED module equivalent load, and a working status indication circuit.

[0017] The voltage clamping circuit is composed of a single or multiple voltage regulator tubes (ZD1, ZD2, ..., ZDn) connected in series with the first resistor R1, and its two ends are respectively connected to the two ends of the output circuit driven by the LED aging power supply. A contact point A1 is set between a resistor and the voltage regulator tube, so that the contact point A1 can obtain the voltage and current that a power switch tube switch Q1 conducts. This voltage and current pass through th...

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Abstract

The invention discloses an aging testing device for detecting the driving performance stability of an LED (light-emitting diode) power supply. The device comprises a voltage clamping circuit, a power switch tube driving and protection circuit, a power switch device, an LED module equivalent load and a working state indication circuit, wherein the voltage clamping circuit is connected with a resistor through one or more voltage-regulator tubes, A1 can obtain the break-over voltage and current of a power switch tube Q1, the voltage and the current are used for charging an interlayer capacitor between the electrodes G and S of the power switch device through the power switch tube driving and protection circuit, the charging time is determined in a way that the voltage of a primary side feedback-based LED driver can be boosted from voltage during power-on startup to normal working voltage, and the voltage at A1 can reach the break-over voltage of the power switch tube Q1. Therefore, functions required by a process from the connection of an LED module with the LED driving power supply to the stable output of the current after power-on are simulated.

Description

technical field [0001] The invention belongs to the technical field of aging of LED power drive products, and in particular relates to an aging test device for detecting the stability of LED power drive performance. Background technique [0002] The LED industry is currently developing rapidly. Its applications range from building intelligent LED lighting systems to small LED flashlights and indicator lights. LED products have gradually entered every corner of society, but the failure mechanism of LED products has always been a problem that has plagued the improvement of LED product quality. a factor. In design, manufacture, installation, application and other links, the reliability of LED has always been a difficult problem for the industry. In lighting, display equipment and other applications, LED devices are often composed of multiple LEDs, which have very high requirements for electrical performance stability, light and color performance attenuation consistency, and se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/40
Inventor 方彬辉
Owner FOSHAN TOPDAY OPTOELECTRONICS TECH