power supply - How to obtain a little 120 VDC from 240 VAC? - Electrical Engineering Stack Exchange
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9 ways to build 24V power supply circuits with easy parts
Simple Inverter 12V DC to 120V AC | Electronic Schematic Diagram
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TL494 12V to 120V DC DC Boost Converter PSU - YouTube
9 ways to build 24V power supply circuits with easy parts