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ToddFun.com: Convert 120v AC to 12v DC using just a light bulb, diode and a capacitor. - YouTube
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日期：2024-05-28
How to hack a light bulb, diode and capacitor into a simple 12v DC power supply. I go into the math just enough so others can calculate the correct size light bulb for their 12v DC power supply hack....看更多
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