LED使用電路的注意事項
A、建議LED使用時,需串電阻作業(yè),以防止大電流或大電壓燒損晶片,有部分客戶投訴亮度不均及色澤不均,均為大電流或大電壓燒損所致。如下電路
In order to protect chip from burning which due to high current or voltage, aresistance is needed when using LED,some customers complained that inequable colour and lustre or inequable brightness, which all because of high current or high voltage. As the picture,
B、舉例說明:examples
G晶片在未串電阻的情況下,給電壓2.2V,其電流為100mA以上,其發(fā)光顏色已趨的于橙色,時間過長會燒損晶片,如下圖片:
the color of chip G is orange when there is no resistance and voltage is 2.2V,current is 100mA, the chip would be burned during a long time.
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