光敏电阻器原理及检测方法

Light Sensitive Resistor Principle and Characteristicsand Test Method

由于不同材料的光敏电阻时延特性不同,所以它们的频率特性也不同。硫化铅的使用频率比硫化镉高得多,但多数光敏电阻的时延都比较大,所以,其不能用在要求快速响应的场合。根据电路的具体要求,选择暗阻、亮阻合适的光敏电阻,一般选择暗电阻大的光敏电阻器,并且暗阻和亮阻相差越大越好。

Because different materials of photosensitive resistance delay characteristics are different, so their frequency characteristics are different. The use of lead sulfide frequency than cadmium sulfide much higher, but most photosensitive resistance＇s time delay are bigger, so it cannot be used in the occasion of rapid response requirements. According to the specific requirements of the circuit, choose the dark resistance, light resistance suitable photosensitive resistance, generally choose the dark resistance big light sensitive resistor, and dark resistance and light resistance are the bigger the better.