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>> No.1614138 [View]
File: 18 KB, 359x410, Annotation 2019-05-21 024937.jpg [View same] [iqdb] [saucenao] [google] [report]
1614138

>>1614133
>100 ohm pull-up
I need current to drive optocoupler
50Hz PWM
50% duty cycle



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