A06B-6078-H415#H500

A06B-6078-H415#H500

A06B-6078-H415#H500Y端子输出的是开关信号，需要的电流输出能力，所以使用三极管构成OC输出。由于Y端子有可能会接外电源，10Ω电阻R107用于限流，稳压管用于保护三极管，防止CE过压。三极管BCX56额定电流为1A，CE耐压为80V。Y端子输出电流一般为50mA，三极管选取原则一般是额定电流取5倍左右，因此也可以选用额定电流600mA的MMBT4401。

图中，光耦PC817用于隔离，一般工作电流设定在5～10mA，可以确保开通状态和开通速度，因此，光耦原边的限流电阻取值为510Ω。

A06B-6078-H415#H500 

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