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2015-02-05
GSTEK was notified that China Patent ZL201010538193.8 has been granted by SIPO.
 

For overcoming the issue of low dimming accuracy during the dimming process of the LED driving circuit, the present invention controls the converter circuit sustains a small amount of power conversion even when the dimming signal indicates off state, so as to keep the output voltage of the converter circuit at the level close to the lighting threshold voltage of the LED module. The output voltage and the control signal for the converter circuit may be kept at adjacent to the stable value to facilitate stable operation of the converter circuit at the next cycle.

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