
"In this video, you'll learn how to design a relay module using an optocoupler, perfect for isolating control circuits from high-power loads. We’ll guide you through the complete circuit diagram, explain how each component works—including the optocoupler, transistor, and relay—and demonstrate how to safely switch AC or DC devices. Whether you're a beginner or hobbyist, this tutorial will help you build reliable and safe switching circuits for your projects."
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