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How to Design a 12V Relay Module #Electronics #Relay #diyelectronics In this short video, the internal circuit diagram of a Single Channel 5V Relay Module is explained in a simple and clear way 🔌⚡ You will learn: ️ How the relay driver circuit works ️ Role of the bc547 NPN transistor ️ Why a flyback diode (1N4148) is used for ...
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