PC817 Test Without Multimeter Try This Hack
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PC817 Test Without Multimeter Try This Hack
#Shorts Test an optocoupler without a multimeter — simple breadboard LED test in 30s! ⚡ Learn how to check a PC817 optocoupler using only a breadboard, jumper wires and an LED. Discover a safe, quick DIY method to verify input diode and output transistor without a multimeter. Follow step-by-step, see pass/fail signs instantly. This short ...
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