Built-in photosensitive resistor (CDS), Brightness according to ambient light, Automatic IR LED can be opened and closed, More delay infrared lamp working life.
内置光敏电阻(CDS)，根据环境光线亮度，可自动控制红外灯开启与关闭，更能延缓红外灯的工作寿命。
A light (diode), is on or off, at one end, and a photo-resistor at the other end registers its state.
轻型（半导体），或者是客，一头、照片登记在另一端的电阻状态。
If the load resistor is a light bulb, the bulb will burn at half brightness when it is first turned on.
如果负载电阻是一个灯泡，灯泡会燃烧一半的亮度，当它第一次开启。
While substituting the regulation-resistor for light intensity adjustment on the spectrophotometer with this device, automatic adjustment of light intensity is realized.
用这种电路替代原721型分光光度计中的光强调节电位器即可实现自动调节光强。
While substituting the regulation-resistor for light intensity adjustment on the spectrophotometer with this device, automatic adjustment of light intensity is realized.
用这种电路替代原721型分光光度计中的光强调节电位器即可实现自动调节光强。
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