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性。图3给出了几种通用的白色led驱动电路。图3. 对于典型的白光led，通常在IF = 20ma下测试其电特性测。因此，为了得到预知的和匹配的亮度与色度，建议采用恒流驱
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o raise and keep the brightness. IF the capability of heat radiating can be boosted up, th
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h regard to countless years IF they tend to be intended for well-designed as well a
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. and having almost all uggs they are offered for a amount however , IF you might be ver
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系。在正向电压 (vf)超出内部门槛电压前，hi-led上几乎没有正向电流(IF)流过。如果vf进一步升高，曲线将以线性斜率突然快速上升，形成一个形似膝盖的曲线。led的输出亮度与正
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为电压稳压器；右边为电流稳压器)gi是控制器ic的参数，rop = vo / IF系统极点(上面为电压调节器；下边为电流调节器)rhp零点(上面为电压调节器；下面为电流调节器)对升
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经led的电流IF稳定在一定的范围内，同时可以兼有一定的调光功能。图中的电感l的作用是起到s开通时储能和s关断后的续流作用，以减少流过led电流IF的波动。 2、升压式开关驱动升压
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: IF they could closely manage the spectrum absorbed by solar cells by carefully tweaking th
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i think you might get many pricelists from dIFferent supplier. especially IF you hav
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