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Diagnose LEDs by Monitoring the Switch-Mode Duty Cycle

高工
2012-04-22 15:00:44    评分
Diagnose LEDs by Monitoring the Switch-Mode Duty Cycle


关键词: high-brightness LEDs, HBLEDs, forward voltage, differential measurments, LED drivers, comparators 


Abstract: A change in the forward voltage (VF) for a string of series-connected, high-brightness LEDs (HB LEDs) can indicate deterioration or complete failure of one or more of the LEDs. Accordingly, this circuit assesses the LED's health by monitoring VF. 


 Diagnose LEDs by Monitoring the Switch-Mode Duty Cycle.pdf



关键词: Diagnose     Monitoring     Switc    

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