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Why Optocoupler's are used on Switch Mode Power Supply boards. True Optocoupler testing.

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How to Test Optocouplers and Opto-isolators with a Multimeter

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How To Test SMD Resistor With Multimeter

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How to test Ceramic capacitors Part 1

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Des millions de personnes ne connaissent pas l'invention de cet outil fait maison || DIY

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