当门开关关闭(车门打开)的引脚电压慢慢上升8以上的三角形产生短期占空比输出波形的负峰和一个暗淡的灯光。

When the door switch is closed (car door open) the voltage on pin 8 slowly rises above the negative peaks of the triangle wave producing a short duty cycle output and a dim light.

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在IR 2110驱动电路的基础上，介绍了产生负偏压和提高驱动功率的电路，并且针对电路中存在占空比的问题，设计了占空比调节电路。

Based on the driving circuit of IR2110, the circuits for producing negative bias voltage and increasing driving power are introduced.

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