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How to design a circuit to get 12V DC supply from a 230V (RMS) AC supply, also considering the voltage fluctuations in the AC side. - Quora
220V AC to 12V DC Converter Power Supply Using Diodes, Capacitors, Resistors, & Transformers - YouTube
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220V to 12V converter - Electrical Engineering Stack Exchange
220v AC to 12v DC Power Supply Step by Step Project
