191问答库 > 光耦817是属于ic类还是二三极管类

光耦817是属于ic类还是二三极管类

2025-03-16 10:17:45
推荐回答（2个）
回答1：

属于ic类
/////////////////////

回答2：

起到保护光耦的作用
在光敏三极管一端2个引脚上并联一只稳压管
当加在三极管两端的电压超过稳压管稳压值的时候，稳压管击穿导通进入稳压状态，超出的电压会被稳压管吸收，从而保护光耦内置三极管不被高压损坏

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